Energy Sources: Conventional and Non-Conventional
Energy powers everything around us—from homes and industries to transportation and communication. Based on their origin, availability, and renewability, energy sources can be categorized into Conventional and Non-Conventional types.
Conventional energy sources are those that have been in widespread use for decades. They are often derived from natural fossil fuels or biomass and are typically non-renewable, although some exceptions exist.
These energy sources are derived from fossil fuels found beneath the Earth’s surface. They are finite in nature and contribute significantly to environmental pollution.
These include organic, biomass-based energy sources that are commonly available but can be environmentally degrading if overused or not managed sustainably.
Non-conventional energy sources are renewable, sustainable, and environment-friendly. These have gained prominence in recent decades due to global climate change, energy security concerns, and environmental awareness.
Production Method: Nuclear fission (splitting of atoms) or nuclear fusion (merging of atoms)
Production Method: Electricity generated by the movement of water via dams
Production Method: Photovoltaic cells convert sunlight into electricity
Production Method: Wind turbines convert the kinetic energy from wind into electrical energy. Windmills have historically been used for mechanical tasks like pumping water and grinding grain.
Production Method: Specialized plants are constructed along coastlines and estuaries to capture the kinetic energy of tides using turbines or barrages.
Geothermal energy is derived from the natural heat stored beneath the Earth’s surface. This thermal energy can be used directly for heating purposes or indirectly for generating electricity. It offers a stable and clean energy source that operates independently of seasonal or weather-related variations.
In countries like the United States, geothermal energy is harnessed by drilling wells to access underground reservoirs of hot water or steam, which is then piped to heat buildings or generate electricity through turbines.
India has several geothermal hotspots, particularly in:
Biomass energy refers to energy derived from organic materials like wood, crop residue, animal waste, and urban waste.
Production Method: Direct combustion of wood and organic matter for cooking, heating, or industrial use.
Production Method: Biomass can be converted into biofuels like ethanol and methane (biogas) through fermentation and anaerobic digestion.
Production Method: Combustible components of solid waste (like paper, plastic, and organic matter) are burned or converted to produce heat and electricity.
Energy Source | Production Method | Advantages | Limitations |
Solar | Photovoltaic panels | Clean, abundant, zero emissions | Weather-dependent, high initial cost |
Wind | Wind turbines | Sustainable, low operating cost | Intermittent, bird hazards |
Tidal | Turbines in estuaries | Predictable, clean | Expensive, ecological disruption |
Geothermal | Drilled steam wells | Reliable, low emissions | Corrosive minerals, toxic steam |
Biomass (direct) | Burning organic matter | Cheap, widely used | Low energy output, air pollution |
Biomass (conversion) | Ethanol, biogas | Renewable, waste-reducing | Land use competition, energy loss |
Solid Waste | Incineration | Waste management, energy recovery | Pollution, community resistance |
Biomass is a versatile and renewable source of energy obtained from organic materials like plants, agricultural waste, and animal residues. It offers an effective and sustainable method for energy generation, especially in rural and agricultural regions.
Biomass energy is derived by breaking the chemical bonds in organic molecules that are formed during photosynthesis. When burned or processed, biomass releases this stored solar energy in the form of heat, electricity, or fuel.
Petro crops, or hydrocarbon-producing plants, are species that have the potential to produce bio-crude oil—a natural alternative to fossil fuels. These plants can be cultivated in non-arable lands that are not suitable for agriculture or are unfit for forests, making them a highly sustainable biofuel option.
Cleaner fuels are those that emit significantly fewer harmful pollutants compared to conventional fossil fuels such as coal, petrol, and diesel. These alternative fuels not only help reduce the environmental footprint of energy production but also serve as vital stepping stones in the transition to a low-carbon economy. Among these, methanol and ethanol stand out as promising options for transportation, power generation, and industrial applications.
Methanol (CH₃OH), also known as methyl alcohol, is a light, volatile, colorless, and flammable liquid. Although it is toxic and not suitable for consumption, it plays a crucial role in energy systems, chemical industries, and fuel innovation.
Methanol can be synthesized using several raw materials and processes:
Ethanol (CH₃CH₂OH), or ethyl alcohol, is a clear, colorless alcohol. It is widely used as a renewable fuel, solvent, and even in the production of alcoholic beverages.
Unlike methanol, ethanol is primarily produced through the fermentation of biomass, including:
Feature | Methanol | Ethanol |
Chemical Formula | CH₃OH | CH₃CH₂OH |
Origin | Coal, natural gas, biomass | Biowaste, food crops |
Toxicity | Highly toxic, not for consumption | Safe for consumption (beverages) |
Flame Color | Bright white | Bright blue |
Use in Industry | Chemicals, paints, formaldehyde | Beverages, fuels, food additives |
Fuel Compatibility | Can blend with petrol and diesel | Used in petrol blends (e.g., E10, E20) |
The Methanol Economy refers to a futuristic energy model in which methanol becomes the primary carrier of energy, particularly for:
Methanol serves as a bridge to a Hydrogen Economy by enabling easier storage, transportation, and utilization of hydrogen in the form of methanol.
India can capitalize on:
As the world shifts toward cleaner energy solutions, gas-based fuels like Liquefied Petroleum Gas (LPG), Liquefied Natural Gas (LNG), and Compressed Natural Gas (CNG) have emerged as essential components of the global energy mix. These fuels are less polluting alternatives to conventional fossil fuels and offer a range of benefits for households, industries, and transport.
Liquefied Petroleum Gas (LPG) is a mixture of hydrocarbon gases that are liquefied through compression. The primary components include:
LPG is a by-product of both natural gas processing and crude oil refining. It is widely used as a cooking fuel, in industrial heating, and increasingly in automotive applications due to its relatively clean-burning properties.
Liquefied Natural Gas (LNG) is natural gas cooled to a cryogenic temperature between -120°C and -170°C, transforming it into a liquid for easier storage and transportation.
Compressed Natural Gas (CNG) is primarily composed of methane (CH₄), along with smaller amounts of ethane, propane, nitrogen, CO₂, and trace sulphur compounds. It is extracted from natural gas fields or alongside crude oil and then compressed to less than 1% of its original volume for storage in high-pressure cylinders.
Fuel Type | Calorific Value (MJ/kg) |
Hydrogen | 141 |
Methane (CH₄) | 55 |
Ethane (C₂H₆) | 52 |
Natural Gas / CNG | 52 |
Liquefied Petroleum Gas (LPG) | 50 |
Propane | 50 |
Butane | 49 |
Petrol/Gasoline | 46.4 |
Kerosene | 46.2 |
As the world shifts toward cleaner energy solutions, gas-based fuels like Liquefied Petroleum Gas (LPG), Liquefied Natural Gas (LNG), and Compressed Natural Gas (CNG) have emerged as essential components of the global energy mix. These fuels are less polluting alternatives to conventional fossil fuels and offer a range of benefits for households, industries, and transport.
As of March 31, 2025, India’s total installed renewable energy capacity reached 220.10 GW, marking a record annual addition of 29.52 GW during the fiscal year 2024–25. This significant growth was primarily driven by solar energy, which contributed 23.83 GW to the expansion.
This cumulative capacity accounts for approximately 46.3% of India’s total installed electricity generation capacity, which stands at 452.69 GW.
In addition to the installed capacity, India has a robust renewable energy pipeline totaling 234.46 GW, comprising:
This pipeline underscores India’s commitment to achieving its target of 500 GW of non-fossil fuel-based power capacity by 2030.
India’s renewable energy sector has witnessed remarkable growth, with a significant increase in installations across various sources. The government’s initiatives and favorable policies have played a crucial role in this expansion. For a visual representation of India’s renewable energy landscape, including annual installations and the share of different energy sources, refer to the following chart:
Source: Fourth Partner Energy
This chart illustrates the annual installations of solar and wind energy, as well as the distribution of renewable energy sources in India as of December 2022. India’s progress in renewable energy positions it as a global leader in the transition towards sustainable and clean energy solutions.
The World Energy Outlook (WEO) 2024 is the latest annual flagship report published by the International Energy Agency (IEA). Widely regarded as the most authoritative global source of energy-related analysis, this report plays a pivotal role in shaping understanding and policy in energy planning. It delves deep into current trends in energy demand and supply, assesses the trajectory of global energy transitions, and evaluates the implications for climate change, energy security, and economic development.
India is at the forefront of global energy demand growth. As the world’s most populous nation and one of the fastest-growing economies, India is projected to experience the largest absolute increase in energy demand of any country in the next decade, making it a critical player in shaping the global energy future.
Despite its growing renewable energy portfolio, coal will continue to hold a dominant position in India’s energy mix for the foreseeable future.
In recent years, the term “net-zero emissions” has emerged as a cornerstone of global climate strategy. At its core, a net-zero pledge means balancing the amount of greenhouse gases (GHGs) emitted with an equivalent amount removed from the atmosphere, effectively reducing a nation’s carbon footprint to zero.
In November 2021, during the COP26 climate summit in Glasgow, India made a landmark announcement: it committed to reaching net-zero emissions by the year 2070. As the world’s third-largest emitter of CO₂ (after China and the United States), India’s pledge is both a bold commitment and a crucial component of the global effort to limit warming to 1.5°C as outlined in the Paris Agreement.
According to the World Energy Outlook (WEO) 2024, the Announced Pledges Scenario (APS) presents an ideal pathway where all national climate targets and long-term decarbonization promises are fully met, implemented on time, and followed through with consistent policy and investment support.
In the APS:
While the APS offers an optimistic forecast, it is contingent upon full implementation—partial or delayed action will likely derail India’s trajectory toward its net-zero goal.
As part of its updated Nationally Determined Contributions (NDCs) under the Paris Agreement, India has laid out measurable climate targets:
These near-term actions are critical building blocks for India’s long-term 2070 commitment.
India’s roadmap to 2070 is being actively shaped by transformational government programs that aim to foster economic growth while ensuring environmental sustainability.
The International Energy Agency (IEA) is a leading authority on global energy dynamics. It provides data-driven insights, technical support, and policy recommendations to governments around the world, helping them navigate the complex transitions to sustainable energy.
Through its annual World Energy Outlook (WEO) reports, the IEA offers:
India closely collaborates with the IEA to align its national goals with global best practices, enhance data transparency, and build institutional capacity for climate governance.
While India’s long-term ambition is commendable, the road to net-zero is fraught with challenges:
Solar energy is one of the most abundant, renewable, and environmentally friendly sources of power available on Earth. Thanks to advancements in technology, it is now possible to directly convert sunlight into electricity through the use of photovoltaic (PV) cells, commonly referred to as solar cells.
Photovoltaic cells are the building blocks of solar panels. They are made from semiconductor materials, primarily silicon, which have unique electrical properties that allow them to absorb sunlight and convert it into direct current (DC) electricity.
Each PV cell consists of multiple layers:
When these layers are exposed to sunlight, they create the conditions necessary for electricity to flow.
The working principle of a photovoltaic cell is based on the photoelectric effect, a phenomenon first explained by physicist Albert Einstein.
Here’s how it happens:
While silicon remains the most widely used material in solar cells due to its efficiency and abundance, ongoing research is expanding the range of materials, including:
✅ Clean and Green Energy: No greenhouse gas emissions during electricity generation
✅ Renewable and Abundant: Sunlight is available every day and in vast amounts
✅ Scalable: PV systems can power anything from a small light bulb to an entire city
✅ Low Operating Costs: Once installed, solar panels require minimal maintenance
✅ Energy Independence: Reduces dependence on fossil fuels and centralized power grids
India is one of the global leaders in solar energy adoption, thanks to initiatives like the National Solar Mission and International Solar Alliance. With falling costs of PV technology and rising concerns about climate change, the use of solar panels is rapidly expanding in both rural electrification and urban infrastructure.
The International Solar Alliance (ISA) is a global coalition of solar-resource-rich countries working together to promote the widespread adoption of solar energy technologies. Founded on the principles of sustainable development, energy access, and climate action, the ISA serves as a unifying platform for countries—especially those in the tropical belt—to collaborate on deploying cost-effective solar solutions.
The ISA’s mission is to facilitate energy transition by enabling the efficient and affordable deployment of solar energy solutions, with a focus on promoting energy security, climate resilience, and inclusive sustainable development across the world. The Alliance aims to reduce global dependency on fossil fuels by scaling up solar technologies and creating a favorable global solar market.
To bring about real, transformative change, the ISA works in close coordination with a wide range of international stakeholders, including:
Some of its key institutional partners include:
✅ International Renewable Energy Agency (IRENA)
✅ International Energy Agency (IEA)
✅ Renewable Energy and Energy Efficiency Partnership (REEEP)
✅ Renewable Energy Policy Network for the 21st Century (REN21)
✅ United Nations agencies and specialized bodies
✅ Bilateral donors and international organizations
ISA does not aim to duplicate the efforts of these organizations but rather to collaborate, coordinate, and supplement them. The ISA fosters strong synergies through knowledge exchange, joint projects, and co-investment initiatives.
ISA was officially launched at COP21 (Paris Climate Conference, 2015) by India and France, with the Paris Declaration laying the foundation for its formation. The concept of ISA was initially proposed by Prime Minister Narendra Modi during the India-Africa Forum Summit, as a response to the pressing need for affordable solar solutions, particularly in developing countries.
ISA is headquartered in Gurugram, Haryana, India, and functions as a treaty-based intergovernmental organization, also referred to formally as the International Agency for Solar Policy and Application (IASPA).
ISA was conceived primarily as an alliance for “sunshine countries”, those located between the Tropic of Cancer and the Tropic of Capricorn, where solar resources are most abundant. However, the membership is open to all United Nations member states.
Note: Countries that fall outside the tropical region can become members but do not have voting rights within the Alliance.
ISA prioritizes key areas of intervention to promote widespread solar adoption:
ISA plays a crucial role in uplifting the Least Developed Countries (LDCs) and Small Island Developing States (SIDS) by:
The International Solar Alliance (ISA) has set a bold and visionary target of deploying 1000 gigawatts (GW) of solar energy capacity globally by the year 2030. This initiative underscores ISA’s commitment to accelerating the transition to clean, affordable, and sustainable energy sources, especially in developing and underserved regions. The goal aligns with global climate action frameworks and emphasizes the urgent need to reduce dependence on fossil fuels while enhancing energy access and security across member nations.
Adopted during the Founding Conference of the ISA, the Delhi Solar Agenda is a landmark declaration that reflects the shared commitment of ISA member countries. Through this agenda, member states have agreed to significantly increase the share of solar energy in their respective national energy mixes. The agenda encourages collaboration, capacity building, and knowledge sharing among countries to develop robust solar ecosystems that support long-term energy sustainability.
The Delhi Solar Agenda promotes:
By adopting this agenda, ISA member states have demonstrated a unified vision toward leveraging solar energy as a key pillar of their sustainable development strategies.
At its 5th General Assembly, the International Solar Alliance approved the creation of the Solar Facility, a transformative financial initiative designed to de-risk investments and catalyze the growth of solar energy in developing regions.
The Solar Facility comprises two primary components:
The main objective of the Solar Facility is to mobilize private sector investments by offering financial security in “underserved markets,” particularly across Africa. By doing so, ISA aims to unlock the enormous solar potential of the continent, empower local communities with reliable energy access, and promote inclusive economic growth.
The ISA seeks to crowdsource global investments and donor contributions to support this mechanism. Through the Solar Facility, proposed solar projects in Africa and other developing regions will have the opportunity to access payment guarantees and insurance support, making them more attractive to investors and accelerating their implementation.
One Sun One World One Grid (OSOWOG) is a visionary initiative launched by the Government of India to build a global ecosystem of interconnected renewable energy resources. Rooted in the principle that “the sun never sets”—as solar energy can be harnessed continuously somewhere across the planet—OSOWOG aims to establish a global electricity grid that enables the seamless sharing of renewable energy across international borders.
This initiative seeks to unlock the full potential of solar energy worldwide by leveraging time zone differences and ensuring that solar power is accessible at all times in various parts of the globe. With strong leadership from India, OSOWOG is poised to become a transformative force in the global energy transition, promoting clean, affordable, and sustainable energy for all.
The blueprint for OSOWOG is being developed under the World Bank’s technical assistance programme, which supports the accelerated deployment of grid-connected rooftop solar installations. This collaboration will guide the creation of a strategic framework and technical roadmap necessary for the successful implementation of an interconnected global energy grid.
The overarching goal of OSOWOG is to facilitate international cooperation in renewable energy generation and distribution, allowing countries to:
To achieve these goals, OSOWOG requires the establishment of a transnational electricity grid, allowing the free flow of power across borders. This necessitates substantial regulatory and infrastructural adjustments, particularly in the following areas:
1. Grid Security for India and Participating Nations:
Ensuring the resilience and stability of national electricity grids, especially in the face of increasing cross-border energy flows, cyber threats, and supply-demand fluctuations.
2. Development of a Global Energy Exchange Mechanism:
Creating a reliable and transparent market structure that allows for the efficient trading of electricity across different nations and regions.
A smart grid will form the backbone of OSOWOG. These advanced power networks incorporate digital technologies to monitor, manage, and optimize the generation, distribution, and consumption of electricity. Smart grids are essential for minimizing transmission losses, balancing intermittent energy supply, and ensuring high operational efficiency.
The OSOWOG project is designed to be rolled out in three strategic phases, each expanding the geographic scope and complexity of the interconnected network:
Phase 1:
Phase 2:
Phase 3:
OSOWOG is widely regarded as India’s strategic counter to China’s Belt and Road Initiative (BRI). While the BRI focuses on physical infrastructure and trade routes, OSOWOG centers on sustainable, digital, and clean energy connectivity. By spearheading OSOWOG, India aims to position itself as a global leader in climate action and renewable energy diplomacy, while also fostering South-South cooperation and supporting the clean energy needs of developing nations.
India has emerged as a global leader in the renewable energy sector. As of recent global rankings, India stands 4th worldwide in terms of total installed renewable energy capacity, as well as 4th in wind power and 4th in solar power capacity. This rapid growth reflects the nation’s sustained efforts to transition towards a cleaner and more sustainable energy future.
The National Institute of Solar Energy (NISE) has estimated India’s solar potential at an impressive 748 GW, assuming only 3% of the country’s waste land is utilized for installing solar photovoltaic (PV) modules. This highlights the vast untapped potential India holds in harnessing solar energy.
Solar energy has taken a central role in India’s National Action Plan on Climate Change (NAPCC), with the National Solar Mission (NSM) being one of its flagship programs. The mission’s key objective is to establish India as a global leader in solar energy, driving innovation, manufacturing, and deployment of solar technologies.
As part of this mission, India set an ambitious target of installing 100 GW of grid-connected solar power capacity by 2022, aiming to transform the country’s energy landscape and significantly reduce carbon emissions.
Launched in 2019 by the Ministry of New and Renewable Energy (MNRE), the Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan (PM-KUSUM) is a flagship initiative designed to promote solar energy adoption in the agricultural sector.
The scheme aims to reduce reliance on diesel and grid electricity by supporting farmers in deploying solar energy solutions for irrigation and power generation. It consists of three components:
1. Component A:
2. Component B:
3. Component C:
Together, these components were aimed at adding 25.75 GW of solar capacity by 2022, with a total central financial outlay of Rs. 34,422 crores.
The PM-KUSUM scheme is more than just a renewable energy program—it is a comprehensive rural development strategy. It aims to:
Recognizing its success and potential, the Union Budget 2020 proposed an expansion of the PM-KUSUM scheme with updated and more ambitious targets:
To promote the adoption of solar power beyond national borders, India has also set up a Project Preparation Facility (PPF) in collaboration with the EXIM Bank of India. This facility helps develop bankable solar energy projects in ISA (International Solar Alliance) member countries, fostering global cooperation in sustainable energy development.
The Pradhan Mantri Kisan Urja Suraksha evam Utthaan Mahabhiyan (PM-KUSUM) scheme is designed to revolutionize the agricultural energy landscape in India. It integrates sustainable energy with rural development, offering a wide range of social, economic, and environmental benefits:
✅ Reduced Dependency on Diesel and Kerosene:
One of the most immediate benefits of PM-KUSUM is the reduction in the usage of diesel and kerosene in the agriculture sector. Solar-powered irrigation systems provide a clean, cost-effective, and uninterrupted source of energy, reducing operational costs for farmers and cutting down harmful emissions.
✅ Income Generation Through Solar Power Sales:
The scheme empowers farmers to set up solar power generation systems on their agricultural or barren lands. By feeding surplus energy into the grid, farmers can earn an additional income stream, thus contributing to their economic upliftment and long-term financial security.
✅ Utilization of Barren Lands for Income:
Farmers can transform unused or non-arable land into productive assets by installing solar panels. This not only helps in generating clean energy but also converts idle land into a revenue-generating resource, promoting rural land use efficiency.
✅ Reduction in Emissions and Financial Burden on DISCOMs:
The transition from fossil fuels to renewable energy in agriculture significantly contributes to the reduction of greenhouse gas emissions. In addition, the scheme aims to alleviate the subsidy burden of approximately Rs. 50,000 crore currently borne by power distribution companies (DISCOMs) for agricultural electricity.
While PM-KUSUM is a forward-looking and transformative scheme, certain implementation and structural challenges have been raised by various stakeholders and experts:
The availability of free or subsidized electricity—now powered by solar—may encourage farmers to draw excessive groundwater for irrigation, potentially aggravating the water crisis in drought-prone regions.
Although the scheme aims to reduce the financial strain on DISCOMs, its success hinges on linking pump installation with reductions in subsidized power supply, which is currently not mandatory. Without regulatory enforcement, the subsidy burden may persist.
The requirement to lease land for up to 25 years or make large upfront investments may disproportionately benefit wealthier farmers, sidelining small and marginal landholders who may lack financial capacity or long-term land access.
The Rooftop Solar (RTS) Programme, launched by the Ministry of New and Renewable Energy (MNRE) in 2015, is another vital pillar in India’s solar energy expansion. It aims to promote decentralized solar power generation and increase the share of clean energy in residential, institutional, and commercial sectors.
In the second phase, Electricity Distribution Companies (DISCOMs) have been given a central role. This shift is aimed at streamlining the installation process and removing consumer hurdles by eliminating the need to coordinate with multiple agencies.
According to the State Rooftop Solar Attractiveness Index (SARAL), Karnataka ranked as the top-performing state in terms of RTS readiness and implementation. Telangana, Gujarat, and Andhra Pradesh also received an A++ rating, reflecting their strong policy support and infrastructure. Jammu & Kashmir, on the other hand, ranked the lowest.
To promote self-reliance in solar energy infrastructure, the Government of India has launched a Production Linked Incentive (PLI) Scheme aimed at boosting domestic manufacturing of integrated solar PV modules.
The initiative is projected to create 30,000 direct jobs and approximately 1,20,000 indirect employment opportunities, especially in the manufacturing and installation sectors.
By reducing dependency on imported solar PV modules, the scheme aims to save approximately Rs. 17,500 crore annually and enhance India’s energy independence.
The scheme is designed to encourage R&D for higher-efficiency solar modules, fostering innovation and global competitiveness in the domestic solar sector.
This initiative plays a crucial role in supporting the Atmanirbhar Bharat (Self-Reliant India) campaign by strengthening the nation’s capacity to manufacture world-class renewable energy components.
The Ministry of New and Renewable Energy (MNRE) released the National Wind-Solar Hybrid Policy in 2018 to enhance the efficiency and reliability of renewable power generation. Recognizing the complementary nature of solar and wind resources, the policy aims to optimize grid usage, land utilization, and ensure a more stable energy output by combining both renewable sources at a single project site.
The policy allows for the retrofitting of existing wind or solar power plants with the complementary source, increasing the productivity of the project and utilization of infrastructure.
The policy supports flexible project design, allowing wind and solar components to be integrated at the alternating current (AC) as well as direct current (DC) level for better technical compatibility.
There is no rigid ratio requirement, and developers can choose their mix of wind and solar capacity based on site-specific factors, though for recognition as a hybrid project, one component must be at least 25% of the capacity of the other.
Power procurement from hybrid projects is mandated to be carried out through a tariff-based competitive bidding process, ensuring cost-effectiveness and transparency.
Despite its significant strides in solar energy, India faces several technical, environmental, and logistical challenges that could potentially hamper long-term sustainability and growth.
As the solar industry grows, the challenge of managing waste and pollution from panel manufacturing and disposal becomes increasingly critical.
The Pavagada Ultra Mega Solar Park in Tumakuru district, Karnataka, is one of the largest solar parks in the world, spanning over 13,000 acres.
Located in the southern state of Tamil Nadu, the Muppandal Wind Farm stands as one of India’s most significant wind energy hubs. Spread across vast tracts of barren, uncultivable land, the region’s topography and climatic conditions make it ideally suited for wind power generation. The natural funnelling effect caused by the surrounding terrain, particularly the Western Ghats mountain range, channels strong winds into the area for nearly nine months each year. These consistent high-pressure winds, predominantly from the west, make Muppandal an optimal site for harvesting wind energy on a large scale.
India’s ambitious push to become a global leader in solar energy has had a considerable impact on the growth trajectory of the wind energy sector. Several key factors contribute to solar’s current edge:
Despite its challenges, wind energy remains a crucial part of India’s renewable energy mix, offering several distinct advantages:
The global offshore wind energy sector has witnessed significant growth, expanding from 29.2 GW in 2019 to 35.3 GW in 2020, as per the Global Wind Energy Council’s 2021 report. The top players in this space include:
These countries benefit from their location in the westerly wind belt, a region characterized by strong, consistent, and predictable high-speed winds—ideal for offshore wind farms.
India has set bold goals for offshore wind development, aiming to harness 5 GW by 2022 and 30 GW by 2030. Long-term projections suggest that India could contribute up to 140 GW to the global offshore wind capacity, which is expected to surpass 2,000 GW by 2050, according to European Union estimates.
With a vast coastline, favorable wind conditions, and increasing demand for clean energy, India is well-positioned to emerge as a global leader in offshore wind—provided that the right infrastructure, policy support, and investment are in place.
India’s extensive 7,600-kilometre-long coastline holds tremendous promise for the development of offshore wind energy. According to the Ministry of New and Renewable Energy (MNRE), the country has an estimated offshore wind energy potential of 140 GW by the year 2050. This substantial capacity highlights the immense opportunity for India to diversify its renewable energy portfolio and reduce its dependence on fossil fuels.
A detailed assessment conducted by the National Institute of Wind Energy (NIWE) further identifies two key coastal regions with the highest offshore wind energy potential:
To catalyze the development of offshore wind energy, the Government of India introduced the National Offshore Wind Energy Policy in 2015. This landmark policy provides a comprehensive legal and institutional framework for the exploration and development of offshore wind projects within India’s maritime territory.
Under this policy:
Offshore wind energy offers several compelling advantages over its onshore counterpart, especially as India looks to scale up its renewable energy targets:
While offshore wind is promising, onshore wind energy remains a crucial part of India’s renewable energy strategy, primarily due to:
In a significant move to encourage the development of wind energy projects on forest land, the Ministry of Environment, Forest and Climate Change (MoEF) has waived the mandatory lease rent of Rs. 30,000 per MW previously levied on wind power developers.
✅ Payment of Compensatory Afforestation (CA) charges.
✅ Payment of Net Present Value (NPV) for forest land.
❌ Additional lease rent of Rs. 30,000/MW, now relaxed.
Despite India’s strong early lead in wind power development, the sector has witnessed stagnation in recent years due to a variety of financial, regulatory, and operational challenges:
While wind energy is widely recognized as a clean and renewable source of power, it is not without its environmental and health-related challenges. Like all forms of energy generation, wind power has potential adverse impacts that need to be carefully managed through thoughtful planning, mitigation strategies, and regulatory oversight.
One of the primary concerns associated with wind farms—both onshore and offshore—is their effect on natural habitats and biodiversity. The development of wind energy infrastructure can lead to the reduction, fragmentation, or degradation of habitats that are vital for a variety of wildlife species, including birds, bats, fish, and plant life. Specifically:
Mitigation efforts, such as comprehensive environmental impact assessments and adaptive project designs, are critical to reducing these ecological risks.
Another area of concern often raised by communities near wind farms involves the potential human health impacts of living close to wind turbines. While scientific consensus is still evolving, terms like “wind turbine syndrome” or “wind farm syndrome” have been used to describe a range of self-reported symptoms believed to be associated with proximity to wind farms. These may include:
These symptoms are often attributed to low-frequency noise (infrasound), visual disturbance (shadow flicker), or general psychological distress caused by the presence of large moving structures near residential areas. While conclusive evidence remains limited, these concerns underline the importance of community engagement, setback regulations, and noise control measures in wind farm planning.
India’s wind energy journey began decades ago, with early developments like the Muppandal Wind Farm in Kanyakumari, which remains the largest onshore wind farm in the country. However, many of the turbines in such legacy wind farms are now over 25 years old, operating at reduced efficiency compared to modern standards.
Repowering refers to the process of upgrading or replacing aging wind turbines with newer, more efficient, and higher-capacity models. This can involve:
Despite its potential, repowering has seen limited uptake in India. In 2016, the government introduced a Repowering Policy targeting wind turbines of 1 MW capacity or below, aiming to revitalize old wind farms and improve overall efficiency. However, the policy has had very few takers due to several key challenges:
Biofuels are a category of hydrocarbon-based fuels that are derived from organic material—either living organisms or recently deceased biological matter—through natural processes occurring over a relatively short period of time. Unlike fossil fuels, which take millions of years to form, biofuels are considered renewable as they can be replenished on a human timescale.
These fuels can take multiple forms, including:
✅ Solid Biofuels – e.g., Wood, crop residues, dung, and manure. Often used in rural and traditional heating or cooking systems.
✅ Liquid Biofuels – e.g., Bioethanol (produced from sugarcane, corn, or wheat) and Biodiesel (made from vegetable oils or animal fats). These are widely used as blending agents in gasoline and diesel.
✅ Gaseous Biofuels – e.g., Biogas, a mixture primarily composed of methane, generated through the anaerobic digestion of organic waste materials like food scraps, manure, and sewage.
Biofuels are gaining momentum as an important part of the global transition to clean and sustainable energy, particularly in the transportation sector, which is one of the major contributors to carbon emissions worldwide.
Biofuels are generally classified into three main generations, based on the source of feedstock, the technology used, and their environmental impact.
First Generation (1G) Biofuels are produced using edible agricultural crops. These biofuels are manufactured by processing food crops rich in sugar, starch, or oil.
Common Feedstocks:
Challenges and Criticisms
While first-generation biofuels marked an important first step in renewable energy innovation, they come with a set of significant limitations:
Biofuels have rapidly evolved over time through advancements in technology, feedstock variety, and production methods. The transition from first-generation to fourth-generation biofuels represents a journey towards making energy not just renewable, but also environmentally restorative.
Second-generation (2G) biofuels are produced from non-food biomass, helping overcome one of the biggest criticisms of their predecessors: the “food vs. fuel” dilemma.
Third-generation (3G) biofuels take a significant leap by tapping into algae—a highly productive and renewable energy crop capable of thriving in non-arable land and brackish water.
Fourth-generation (4G) biofuels represent the cutting edge of bioenergy technology, designed not only to generate sustainable energy but also to actively remove carbon dioxide from the atmosphere.
Whether first-generation or fourth-generation, biofuels offer a host of environmental and technical benefits. Here’s how they contribute to a cleaner, more efficient energy landscape:
Biofuels aren’t just a renewable energy source—they’re a strategic tool for improving national energy security, boosting economic growth, and reducing pollution. However, like any energy source, they come with their own set of advantages and challenges. Understanding both sides is crucial for informed policymaking and public adoption.
1. Reduced Fossil Fuel Dependence
2. Affordable Energy for All
3. Employment Opportunities
1. Eco-Friendly Handling and Usage
2. Cleaner Urban Air
While biofuels currently match the market price of gasoline, they offer a superior value proposition:
Despite their benefits, the adoption of biofuels must be approached with caution and careful planning due to several drawbacks.
Biofuel feedstock cultivation can lead to significant ecological degradation, especially when not managed responsibly.
1. Monoculture Risks
2. Deforestation and Habitat Loss
3. Carbon Debt
4. Fertilizer Use and Waterway Pollution
India’s National Biofuel Policy aims to promote the sustainable use of biofuels as an essential component of the country’s renewable energy roadmap. The policy aligns with the broader goals of energy security, rural development, environmental protection, and climate action.
One of the central features of the National Biofuel Policy is the establishment of ambitious blending targets:
20% Ethanol Blending in Petrol
5% Biodiesel Blending in Diesel
These targets are expected to reduce India’s dependence on fossil fuels, cut down greenhouse gas emissions, and boost the rural economy by increasing demand for biofuel feedstocks.
India’s National Biofuel Policy offers a forward-thinking strategy to diversify and decarbonize the fuel mix. A major focus of the policy is to increase the availability of bioethanol for blending with petrol under the Ethanol Blended Petrol (EBP) Programme. This approach not only supports energy security but also contributes significantly to waste management, rural income, and environmental protection.
A key provision of the policy is the utilization of damaged and surplus food grains for ethanol production. These include grains that are:
Such feedstock helps enhance ethanol availability without impacting food security and simultaneously reduces food wastage. The use of these alternative raw materials has the potential to scale up ethanol production dramatically, especially for blending with petrol across India.
✅ Use of these grains is permitted with the approval of the National Biofuel Coordination Committee (NBCC) to ensure a balanced approach between food security and energy needs.
Bioethanol is a type of renewable fuel produced from biological materials rich in sugars, starches, or cellulose. The sources of bioethanol can be categorized as follows:
Sugar-Rich Materials
Starch-Rich Materials
Cellulosic Materials (Lignocellulosic biomass)
Other Organic Waste
These materials are fermented and processed to extract ethanol, which is then blended with petrol to create cleaner-burning fuels, contributing to reduced vehicular emissions.
Biodiesel is a renewable alternative to conventional diesel, produced through transesterification of various organic oils and fats. Key feedstocks include:
Non-edible Vegetable Oils
Waste Oils and By-products
Biodiesel can be directly used in diesel engines, often in blended form (such as B5 or B20), and it helps in lowering particulate matter and sulfur emissions.
Advanced biofuels represent the next generation of clean fuels. These fuels are derived from non-food biomass and innovative technologies that enhance energy yield and environmental performance.
Second Generation (2G) Ethanol
Third Generation (3G) Biofuels
Bio-CNG (Compressed Bio-Gas)
Drop-in Fuels
Bio-Methanol and Bio-Hydrogen
Drop-in fuels are a revolutionary category of advanced biofuels. Unlike conventional biofuels that often require engine modification, drop-in fuels can be used directly in existing fuel systems, engines, and infrastructure.
The allowance for a broad range of biofuel feedstocks, including waste-based inputs, aligns India’s biofuel policy with a circular economy model. It enables the reuse of waste for high-value applications like transportation fuel, while also creating employment and reducing dependence on imported fossil fuels.
By expanding ethanol and biodiesel production using non-food and waste resources, India is setting the stage for a cleaner, self-reliant, and sustainable energy future.
The Ethanol Blended Petrol (EBP) Programme is a central component of India’s push toward cleaner, more sustainable transportation fuels. Under this initiative, ethanol is blended with petrol to reduce emissions, improve fuel efficiency, and promote energy independence. With ambitious targets set by the National Biofuels Policy-2018, India is on a path to integrating biofuels into its fuel supply.
The National Biofuels Policy-2018 outlines an indicative target for blending biofuels in transportation fuels. The policy aims for:
This significant step will help reduce dependence on fossil fuels, cutting greenhouse gas emissions, and promoting sustainable energy alternatives.
In a bold move, the Government of India (GOI) has advanced the target for 20% ethanol blending (E20) in petrol to 2025, five years ahead of the initial goal. This ambitious goal is part of India’s strategy to reduce carbon emissions and improve energy security. E20 fuel, a blend of 20% ethanol with gasoline, will be gradually rolled out starting from April 2023. The current permissible ethanol blending in petrol stands at 8.5%, but this will significantly increase in the coming years.
According to the Roadmap for Ethanol Blending in India by 2025 report, the blending will happen in phases:
This timeline sets a clear pathway for scaling up ethanol blending across India’s petrol supply network, paving the way for cleaner and more sustainable fuel options.
India’s biofuel industry is supported by several key biofuels, including bioethanol and biobutanol. Each of these fuels offers unique benefits and plays a crucial role in India’s green energy transition.
Bioethanol (C2H5OH), also known as ethanol or ethyl alcohol, is an alcohol produced primarily from starch and sugar crops. It is produced through fermentation or by reacting ethylene with steam. Ethanol is a colorless, biodegradable liquid that is low in toxicity and environmentally friendly. It burns cleanly, producing only carbon dioxide (CO2) and water vapor. Some important features of bioethanol include:
By blending ethanol with petrol, India can reduce its dependency on imported fossil fuels while promoting the use of renewable energy.
Biobutanol, a four-carbon alcohol, is another biofuel produced by fermenting biomass. While ethanol has gained significant traction as a fuel, biobutanol is emerging as a promising alternative to gasoline. It shares several properties with gasoline, making it compatible with existing engines and fuel infrastructure. Some key points about biobutanol:
Biobutanol’s lower volatility and higher energy content than ethanol give it advantages for specific applications, such as heavy-duty vehicles, which may benefit from its more gasoline-like characteristics.
Biofuels like bioethanol and biobutanol are key to reducing India’s carbon footprint, improving air quality, and ensuring energy security. By utilizing locally sourced feedstocks such as agricultural residues, food waste, and non-edible crops, India can transition to a more sustainable energy future while creating economic opportunities in the renewable energy sector.
With the advanced ethanol blending targets set for 2025 and beyond, India is positioning itself as a leader in biofuels and green energy innovation, contributing to a cleaner, more sustainable environment for future generations.
Biodiesel is a renewable fuel made from natural sources such as vegetable oils, animal fats, and plant oils, which can be used in diesel engines. It is produced through a chemical process called transesterification, where fats (triglycerides) are reacted with alcohol (typically methanol) to create methyl esters — the chemical name for biodiesel.
Biodiesel is essentially the ester of long-chain fatty acids derived from oils such as vegetable oil, animal fat, or other renewable feedstocks. The most common feedstock for biodiesel production in India is Jatropha, a plant whose seeds are rich in oil (approximately 40%).
The production process involves reacting these oils with methanol (or sometimes ethanol) to replace the glycerol component of fats, creating methyl esters (biodiesel) and glycerin as a by-product.
India’s biofuel development has largely focused on the cultivation of oil-rich plants like Jatropha, which is well-suited to India’s diverse climate and soil conditions. In 2008, the Indian Government launched the National Biofuel Policy, which set an ambitious target of meeting 20% of India’s diesel demand with biofuels by utilizing plant-derived sources, such as Jatropha and other non-edible oil crops.
This policy is a significant step towards reducing India’s dependence on imported fossil fuels and promoting sustainable energy solutions. It also fosters the development of a domestic biofuel industry while improving energy security.
Biodiesel is commonly mixed with fossil diesel to create blends. The blend ratio is denoted by BXX, where XX represents the percentage of biodiesel in the mixture. For example:
In the European Union (EU) and United States, B2 to B100 blends are available at most fuel stations. B20 and lower blends can be used in most existing diesel engines without modifications, making the switch to biodiesel smoother and more cost-effective than other alternatives.
Due to its similar viscosity to fossil diesel, biodiesel does not require major modifications to existing engine systems. It can be used directly in most diesel engines with a simple biodiesel blend (up to B20). In fact, pure biodiesel (B100) may require only minor adjustments in the fuel injection equipment, making it a viable option for existing infrastructure.
Biodiesel offers a range of environmental and practical benefits, including:
✔Lubricating Properties
Biodiesel has inherent lubricating properties due to the presence of long-chain fatty acids. This enhances the longevity of diesel engines and reduces wear and tear, making them last longer compared to petrol engines.
✔Higher Cetane Index
The Cetane Index (CI) of biodiesel is higher than fossil diesel, ranging between 56-58 compared to fossil diesel’s 50-52. This means biodiesel has better ignition and combustion properties, which results in improved engine performance and reduced emissions.
✔Improved Combustion
With about 11% oxygen content, biodiesel improves combustion efficiency, leading to less soot production and reduced particulate emissions. This contributes to cleaner exhaust gases and lowers air pollution.
✔ Low Sulfur Content
Biodiesel contains minimal sulfur (as low as 0.001%), which helps reduce sulfur oxide emissions, a significant source of air pollution and acid rain in the environment.
✔ Non-toxic and Biodegradable
Biodiesel is non-toxic and biodegradable, meaning it poses less risk to soil contamination or waterways in the event of a spill. It is much safer to handle and store compared to fossil diesel.
✔ Higher Flash Point
With a high flash point of over 130°C (compared to 51°C for conventional diesel), biodiesel is much safer to handle and less prone to spontaneous ignition, ensuring better safety during storage, transport, and use.
✔ Energy Efficiency
The energy return on investment for biodiesel is significant: for every unit of energy used to produce biodiesel, around 3.24 units of energy are gained. This results in a net energy gain and reduces reliance on fossil fuels. Each liter of biodiesel produced also helps save 2.2 kg of greenhouse gases compared to conventional fossil fuels.
✔ Sustainable and Renewable
Unlike fossil fuels, biodiesel is renewable and sustainable. It doesn’t compete with edible crops (no “food vs fuel” dilemma), as it can be produced from non-edible oils such as Jatropha, Castor, and Neem, among others.
Compared to other alternative fuels like CNG, LNG, LPG, or ethanol, biodiesel offers distinct advantages:
India’s vast expanse of fallow land, combined with favorable weather conditions and labour availability, makes it an ideal location for growing oilseed crops such as soybean, Jatropha, Mohwa, Neem, and Castor. These crops can be cultivated specifically for biodiesel production, creating an economic ecosystem that supports the renewable energy sector while reducing environmental impact.
By investing in biodiesel, India can secure its energy future, reduce greenhouse gas emissions, and contribute to global sustainability efforts
Hydrogen is emerging as one of the most promising clean energy solutions, with the potential to decarbonize key sectors such as transportation, steel production, cement manufacturing, and more. As part of the growing Hydrogen Economy, hydrogen plays a crucial role in moving towards a low-carbon future.
Hydrogen is considered a zero-emission fuel because when it is burned or used in fuel cells, it produces only water vapour as a byproduct, making it an ideal alternative to conventional fossil fuels like gasoline, diesel, and natural gas. This means hydrogen could significantly reduce greenhouse gas emissions from sectors that are currently responsible for a large share of global emissions. For example, the transportation sector alone contributes to 1/3 of global GHG emissions, and hydrogen could offer a sustainable solution for reducing its carbon footprint.
The Hydrogen Economy refers to the widespread use of hydrogen as a clean energy carrier. This vision encompasses using hydrogen as a low-carbon fuel in various industries such as:
As the world moves toward climate neutrality, hydrogen is expected to play a key role in meeting international decarbonization goals by replacing carbon-intensive energy sources and offering a cleaner alternative.
Hydrogen is the most abundant chemical substance in the universe. It is a light, highly combustible gas with the molecular formula H2. At standard temperature and pressure (STP), hydrogen is non-toxic, odorless, tasteless, and colorless. Due to its low molecular weight, it is not commonly found in its pure form on Earth, as it typically bonds with other elements like oxygen (H2O), carbon (in hydrocarbons), and nitrogen (in ammonia).
Although hydrogen is abundant in nature, it does not naturally exist in its pure form in the atmosphere. Instead, it must be produced through energy-intensive processes such as:
Because hydrogen doesn’t occur naturally in pure form, it is considered an energy carrier, not an energy source. Like electricity, hydrogen can store energy and transport it from one location to another, where it can be used as a fuel in various applications.
Hydrogen fuel offers several key benefits that make it an ideal alternative to fossil fuels in a wide range of applications:
Hydrogen is renewable and abundant. It can be produced from a variety of resources, including water, natural gas, biomass, and even plastic waste. The potential to produce hydrogen from renewable sources, such as solar, wind, and hydropower, makes it a cornerstone of the green energy transition.
Compared to traditional fuels such as gasoline or diesel, hydrogen is more fuel-efficient. It can produce more energy per unit of fuel, which makes hydrogen-powered vehicles more efficient in terms of both energy use and cost.
For example, hydrogen fuel cells produce electricity directly from hydrogen and oxygen, with water vapor as the only byproduct. This is not only environmentally friendly but also results in lower maintenance costs for vehicles, as fuel cells have fewer moving parts compared to internal combustion engines.
When hydrogen is used in fuel cells, the only byproduct is water vapor, making it an ideal fuel for low-carbon transportation and industrial applications. Unlike gasoline or diesel, hydrogen does not release harmful pollutants like carbon monoxide, nitrogen oxides, or particulate matter into the atmosphere.
Hydrogen can be used to power a range of clean technologies, from zero-emission vehicles to industrial machinery, homes, and power plants, creating a path toward cleaner air and healthier ecosystems.
Hydrogen is incredibly versatile and can be used across various sectors, such as:
Hydrogen’s potential to decarbonize heavy industries and sectors with high greenhouse gas emissions is immense. By harnessing clean hydrogen produced from renewable sources, we can:
With the growing push towards green hydrogen and electrolysis, hydrogen is poised to play a central role in the world’s energy transition. By investing in hydrogen infrastructure and production technologies, we can create a cleaner, more sustainable future for all.
Despite its promising potential as a clean energy solution, the widespread adoption of hydrogen faces several technical and logistical challenges. These hurdles must be overcome for hydrogen to play a pivotal role in global energy transition efforts.
One of the primary challenges of hydrogen is the difficulty of transporting and storing it safely and efficiently:
Currently, there is a relative lack of off-the-shelf engine technology that can run safely and efficiently on hydrogen fuel. This is due to various reasons, including:
The reactivity of hydrogen with environmental oxygen poses significant safety risks, particularly in the event of leaks or improper handling. While hydrogen fuel cells are generally safe when managed correctly, the flammability of hydrogen means that robust safety standards and technology are required to mitigate the risks associated with its use.
While hydrogen holds potential, electric vehicles (EVs) are currently more efficient and economically viable compared to hydrogen-powered vehicles. This is primarily because:
Hydrogen is classified based on the energy source used for its production. These types differ in their environmental impact and carbon emissions: Brown Hydrogen
India is making significant strides toward integrating hydrogen into its energy landscape. However, challenges remain in scaling up production and infrastructure development:
The National Hydrogen Energy Road Map was adopted by the National Hydrogen Energy Board in 2006, with the primary aim of:
The Union Budget 2021-22 announced the National Hydrogen Mission (NHM), which aims to:
India is also exploring hydrogen-enriched CNG (HCNG) as an alternative fuel. Some key developments include:
The blending of hydrogen into natural gas represents an innovative approach that combines hydrogen produced from renewable sources, nuclear power, or other sustainable energy sources, and adds it to existing natural gas pipelines. This blend offers a seamless transition towards decarbonizing various sectors that rely heavily on natural gas.
The Government of India has set a target to blend 15% green hydrogen into piped natural gas (PNG) used for domestic, commercial, and industrial consumption. This initiative is part of the National Hydrogen Energy Mission (NHM), which aims to reduce greenhouse gas emissions and help India achieve its goal of being carbon-neutral by 2070.
By incorporating green hydrogen into natural gas, India can significantly reduce its carbon footprint while utilizing the existing infrastructure for energy distribution, making the transition to a hydrogen-powered economy more cost-effective and practical.
Green hydrogen is produced using renewable energy sources like solar and wind power to split water molecules into hydrogen and oxygen through a process called electrolysis. Unlike traditional hydrogen production methods, green hydrogen offers a zero-emission fuel solution, making it a pivotal component of a sustainable future.
While green hydrogen holds immense potential, there are several challenges that need to be addressed before it can be widely adopted as a mainstream energy source:
Despite these challenges, the potential of green hydrogen as a key player in the global energy transition remains high. Its environmental benefits, versatility, and ability to support sustainable energy storage make it a critical focus for future energy policies.
Hydrogen fuel cells are electrochemical devices that convert chemical energy into electrical energy using hydrogen and oxygen. These fuel cells play a vital role in hydrogen-powered vehicles, particularly hydrogen-powered cars and trucks.
In a hydrogen fuel cell:
This process is incredibly efficient and clean, producing zero emissions other than water vapor, making it an ideal solution for powering hydrogen-fueled vehicles and stationary power generation. Additionally, hydrogen fuel cells provide higher energy density than traditional battery systems, which is particularly important for heavy-duty transportation and long-range applications.
Hydrogen fuel cell technology has been primarily used in the transportation sector to power electric vehicles. These vehicles are powered by hydrogen fuel cells rather than traditional batteries, offering several key advantages:
India, like many other countries, is setting ambitious goals to integrate hydrogen into its energy future. The combination of green hydrogen production, fuel cell technologies, and hydrogen blending with natural gas will play a key role in reducing carbon emissions and ensuring a sustainable energy supply.
India’s National Hydrogen Energy Mission (NHM) will continue to drive innovation in hydrogen technologies, focusing on the scalability of green hydrogen production, the development of hydrogen infrastructure, and creating a hydrogen-powered transportation sector.
While the path to a fully integrated hydrogen economy is still under development, the growing interest in hydrogen as a clean and sustainable energy source shows great promise. The adoption of green hydrogen could be a game-changer in efforts to tackle climate change, energy security, and sustainable development.
A fuel cell operates similarly to conventional electrochemical cells, but instead of relying on stored energy, it continuously converts chemical energy into electrical energy. The heart of a fuel cell consists of an anode, cathode, and an electrolyte sandwiched in between. Hydrogen is fed into the anode, and oxygen is introduced to the cathode. This process produces clean energy and has numerous advantages for both transportation and stationary power generation.
Fuel cells hold tremendous promise for the future, especially in a world transitioning to cleaner energy sources. With advancements in fuel cell technologies, such as the development of cheaper catalysts, improved hydrogen storage systems, and a growing hydrogen infrastructure, the adoption of fuel cells could become more widespread in the coming years.
The transportation and industrial sectors are likely to be the first areas where fuel cells gain significant traction, providing clean, efficient, and reliable energy solutions. As governments worldwide commit to decarbonizing their economies and reducing carbon emissions, fuel cells are poised to play a pivotal role in the hydrogen economy.
Launched in 2021, the National Hydrogen Mission (NHM) marks a significant step towards achieving India’s ambitious climate goals under the Paris Agreement (2015). The mission’s primary goal is to accelerate the development of green hydrogen as a key energy source and make India a global leader in green hydrogen production. By fostering a clean, low-carbon energy ecosystem, the NHM is designed to boost India’s energy security, reduce dependence on fossil fuels, and combat climate change.
The National Green Hydrogen Mission (NGHM) was approved by the Indian Government in January 2023, with an initial funding outlay of INR 19,744 crore. This ambitious mission aims to position India as a global leader in green hydrogen production and utilization. It is designed to help India achieve its energy independence and decarbonize key industrial sectors, while contributing to the reduction of greenhouse gas (GHG) emissions.
While renewable energy—particularly wind and solar power—has emerged as a cleaner and more sustainable alternative to fossil fuels, it comes with unique operational challenges that must be addressed to ensure stable and reliable power supply.
To overcome the limitations of traditional grids in managing intermittent renewable energy, India is embracing Smart Grid technology.
A Smart Grid integrates digital communication and automation technologies with the traditional electricity grid. It allows for real-time, two-way communication between utilities and consumers and includes sensors and advanced control systems along transmission and distribution lines.
Launched in 2015, the National Smart Grid Mission aims to support the development and deployment of smart grid technologies across India. The mission oversees the implementation of policies and programs related to grid modernization, with an emphasis on:
Given the intermittent output of wind and solar energy, hybrid energy systems have emerged as a promising solution to ensure round-the-clock clean energy supply.
Hybrid systems combine renewable energy sources with flexible power generation or energy storage technologies. These systems are capable of:
With rapid technological advancements, hybrid energy systems are becoming a viable alternative to conventional coal-fired power plants. They can potentially compete with 30–40% of existing coal-based stations in India, especially in areas where renewable energy is abundantly available.
To ensure India’s continued leadership in sustainable energy, the country must:
With the right investments and policies, hybrid energy systems and smart grids can help bridge the gap between energy supply and demand, ensuring reliable, clean, and affordable power for all.
The global shift toward clean and sustainable energy is heavily dependent on critical minerals, which are essential for manufacturing low-carbon technologies. As countries strive to decarbonize their economies and achieve net-zero targets, the demand for these minerals is skyrocketing—making them a key enabler of the green transition.
The technologies that underpin the clean energy revolution—such as solar photovoltaic (PV) systems, wind turbines, and electric vehicles (EVs)—require significantly more mineral inputs than conventional fossil fuel-based energy systems.
These minerals play a pivotal role in enhancing energy efficiency, improving battery life, and increasing the performance of renewable energy systems.
Despite the surge in demand, the supply of critical minerals is limited and highly concentrated in specific regions of the world:
This geographic concentration poses significant supply chain vulnerabilities, increasing the risk of geopolitical disruptions, price volatility, and resource nationalism. As nations scramble to secure access, the pressure on resource-rich countries is also increasing.
To ensure mineral security and build resilience in the face of growing demand and supply chain constraints, India must adopt a multi-pronged, strategic approach.
As India aspires to become a global leader in renewable energy and green technologies, securing access to critical minerals is non-negotiable. From battery storage systems and electric vehicles to smart grids and wind turbines, these minerals will form the backbone of the sustainable energy infrastructure.
By proactively investing in exploration, refining, recycling, and international partnerships, India can reduce its dependence on imports, create new economic opportunities, and power its green transition with greater autonomy and resilience.
As the world moves rapidly toward clean energy solutions and electric mobility, the demand for critical and strategic minerals—especially lithium—is reaching unprecedented levels. Recognizing the urgency, India is taking concrete steps to secure its place in the global green transition by tapping into its own mineral reserves and forming strategic partnerships abroad.
In a significant breakthrough for India’s energy and mineral security, the Geological Survey of India (GSI) recently announced the discovery of 5.9 million tonnes of lithium deposits in the Salal-Haimana region of the Reasi district, located in Jammu and Kashmir. This marks the first-ever discovery of lithium reserves within the country.
This discovery is a major milestone, given India’s current reliance on imported lithium, a key component for manufacturing batteries in electric vehicles (EVs), smartphones, renewable energy storage systems, and other advanced technologies.
To ensure uninterrupted access to minerals critical to national development and energy transition, India needs to replicate its model of Strategic Petroleum Reserves (SPR) for Strategic Mineral Reserves.
To secure a sustainable and resilient mineral supply chain, policies must prioritize domestic innovation and R&D, particularly in:
Promoting circular economy practices will help reduce mining pressure and contribute to India’s climate and sustainability goals.
To secure a long-term supply of critical minerals from abroad, the Government of India established Khanij Bidesh India Ltd. (KABIL)—a Joint Venture Company under the Ministry of Mines.
Partner Organization | Shareholding (%) |
National Aluminium Company Ltd. (NALCO) | 40% |
Hindustan Copper Ltd. (HCL) | 30% |
Mineral Exploration Company Ltd. (MECL) | 30% |
KABIL has been actively pursuing strategic collaborations with mineral-rich countries, including:
Australia:
Africa and South America:
KABIL is exploring bilateral opportunities with several countries in these resource-rich regions to diversify India’s mineral sourcing and strengthen trade relations.
With lithium now discovered on home soil and global initiatives like KABIL taking shape, India is well on its way to becoming a self-reliant hub for critical minerals.
The Indian Renewable Energy Development Agency Ltd. (IREDA) plays a pivotal role in driving India’s transition to a low-carbon, sustainable economy. Established in 1987, IREDA is a Mini Ratna (Category-I) Public Sector Enterprise functioning under the administrative control of the Ministry of New and Renewable Energy (MNRE). It operates as a specialized Non-Banking Financial Institution (NBFI) dedicated to promoting and financing renewable energy and energy efficiency projects across India.
IREDA operates with the visionary motto of “Energy for Ever”, aiming to make renewable energy a cornerstone of India’s developmental path.
IREDA has played a key role in transforming India into one of the leading global players in renewable energy by bridging financing gaps and enabling green infrastructure development at scale.
Green Bonds are financial instruments designed to raise capital exclusively for environmentally sustainable projects. The proceeds are earmarked for investments in areas such as renewable energy, clean transportation, climate adaptation, energy efficiency, and more.
According to SEBI’s regulatory framework, Green Debt Securities are bonds issued for funding eco-friendly projects or assets that fall under defined categories supporting environmental sustainability.
India has witnessed a significant rise in green bond issuance, reflecting a growing interest in sustainable finance.
To strengthen the green finance ecosystem, SEBI (Securities and Exchange Board of India) has expanded the definition of green debt securities by introducing sub-categories of green bonds, namely:
Blue Bonds
Yellow Bonds
These new instruments align India’s green finance framework with the updated Green Bond Principles (GBP) adopted globally.
Mobilizing Resources for Green Infrastructure
In a bold move to support climate action, the Government of India announced the launch of Sovereign Green Bonds in the Union Budget 2022-23.
Green bonds are fast emerging as a critical financial tool in the fight against climate change. According to the International Finance Corporation (IFC):
“Climate change poses significant risks to agriculture, food systems, water security, and economic stability. Green Bonds offer a vital connection between environmental projects and capital markets.”
To scale up India’s climate commitments and renewable energy targets, it is essential to:
India’s transition to a low-carbon economy is deeply tied to its ability to mobilize capital at scale for sustainable development. With entities like IREDA leading the charge and policy instruments such as green and sovereign green bonds gaining momentum, the future of green finance in India looks promising and transformative.
The Energy Conservation Act, 2001 (EC Act) is a landmark legislation enacted by the Government of India to create a comprehensive legal and regulatory framework for promoting energy efficiency and conservation across various sectors. This includes appliances, vehicles, industries, commercial establishments, and buildings.
The Act provides the necessary institutional structure at both the Central and State levels, enabling a national movement towards responsible and efficient energy usage.
The Act rests on five major pillars designed to drive energy efficiency:
This amendment empowers the Central Government to issue Energy Saving Certificates (ESCerts) to designated consumers who use less energy than prescribed norms. These certificates can be traded, creating a market-based mechanism for energy efficiency and incentivizing energy conservation.
The Energy Conservation (Amendment) Bill, 2022 represents a landmark shift in India’s approach to climate change mitigation and sustainable development. By introducing new regulatory frameworks, compliance mechanisms, and policy instruments, the Bill aims to accelerate the country’s journey toward energy efficiency and net-zero emissions.
This Bill amends the original Energy Conservation Act of 2001, expanding its scope to include carbon trading, green building norms, and energy efficiency standards for vehicles and vessels.
One of the most progressive features of the 2022 Amendment is the establishment of a Carbon Credit Trading Scheme — marking India’s formal entry into the global carbon market ecosystem.
A carbon credit is a tradable permit that allows an entity to emit a specified amount of greenhouse gases (GHGs). One carbon credit typically equals one tonne of carbon dioxide (CO₂) or its equivalent in other GHGs.
The original Energy Conservation Act of 2001 enabled the Central Government to prescribe an Energy Conservation Code for Buildings, applicable mostly to large commercial establishments based on power consumption.
The 2022 Bill broadens the mandate by introducing the “Energy Conservation and Sustainable Building Code”, which lays down guidelines not just for energy efficiency, but also for:
Applies to commercial and residential buildings with:
Empowers State Governments to reduce load thresholds as per local conditions or urban planning needs, thus bringing more residential structures under the green building regime.
Previously, the Energy Conservation Act was limited to appliances and electrical equipment. The 2022 Amendment has significantly widened the scope to include the transportation sector, one of the largest contributors to CO₂ emissions.
India’s energy demand is expected to double by 2040, and unless aggressive measures are taken, so will its emissions. The Energy Conservation (Amendment) Bill, 2022 is a timely intervention aimed at:
The Bureau of Energy Efficiency (BEE) was established in 2002 under the EC Act. It functions as a statutory body under the Ministry of Power.
The BEE’s Standards & Labelling Programme, launched in 2006, is one of the most visible and impactful initiatives. It mandates manufacturers to provide a star rating label on appliances, indicating their energy consumption levels and enabling consumer awareness.
Chillers are mechanical devices used to remove heat from buildings and industrial processes by circulating chilled water or another coolant. They play a vital role in maintaining optimal temperatures, particularly in data centers, hospitals, hotels, malls, and manufacturing facilities.
Given their high energy consumption, optimizing their performance is essential for achieving national energy efficiency goals.
Chillers, which are widely used for space cooling in buildings and industrial applications, account for over 40% of energy use in commercial buildings. The Chiller Star Labelling Program, developed by BEE and launched by the Ministry of Power, provides star ratings for chillers based on their energy performance.
This initiative:
Launched in 2007, the ECBC establishes minimum energy performance standards for new commercial buildings with a connected load of 100 kW or more, or contract demand of 120 KVA or more.
Although voluntary, many states are in the process of making ECBC compliance mandatory to reduce building sector emissions and operational costs.
Introduced by the Ministry of Power, the ECO Niwas Samhita 2018, also known as the Energy Conservation Building Code for Residential Buildings (ECBCR), provides energy performance benchmarks for homes, townships, and apartment complexes.
This initiative promotes energy-efficient architecture, passive design principles, and smart materials to benefit homeowners and the environment alike
India has emerged as a global leader in energy efficiency through innovative and large-scale programs aimed at reducing energy consumption, cutting carbon emissions, and promoting sustainability. Two flagship programs under the Ministry of Power — the Street Lighting National Programme (SLNP) and the UJALA scheme — stand out as world record holders in public and domestic lighting respectively.
Both initiatives are being implemented by Energy Efficiency Services Limited (EESL), a joint venture company comprising leading Public Sector Undertakings (PSUs) under the Ministry of Power.
Launched in 2015, the SLNP is the world’s largest streetlight replacement initiative. It aims to replace conventional streetlights with energy-efficient LED streetlights across Indian cities, towns, and villages.
By dramatically cutting electricity consumption in urban infrastructure, SLNP has not only brought down municipal electricity bills but also strengthened India’s Nationally Determined Contributions (NDCs) under the Paris Agreement.
The UJALA programme is recognized as the world’s largest domestic lighting project. It aims to provide energy-efficient LED lighting to every household in India at affordable prices.
UJALA is designed to make energy-efficient appliances accessible, particularly to the economically weaker sections, while simultaneously reducing the nation’s dependence on energy imports.
Launched in 2018, the Gram Swaraj Abhiyan is a nationwide outreach campaign aimed at increasing awareness and adoption of various government welfare schemes — including UJALA — in rural and remote villages.
To promote sustainable cooling and reduce the load on India’s energy grid, the Bureau of Energy Efficiency (BEE) has introduced new performance standards for Room Air Conditioners (RACs).
ISEER is a new, climate-specific metric introduced by BEE to rate air conditioner energy efficiency in India, factoring in the country’s seasonal climate variations.
By reflecting actual seasonal use patterns, ISEER provides better accuracy, helps consumers save on electricity, and guides manufacturers towards more efficient product designs.
The Sustainable Energy for All (SE4All) initiative is a UN-led, multi-stakeholder partnership launched in 2011. It aligns closely with Sustainable Development Goal 7 (SDG 7) and supports global climate targets under the Paris Agreement.
India’s energy transition and large-scale implementation of EESL-led programs, combined with its global outreach through International Solar Alliance (ISA), reinforce its role as a front-runner in the global clean energy movement.
Under the original Energy Conservation Act of 2001, State Electricity Regulatory Commissions (SERCs) were primarily tasked with adjudicating penalties for non-compliance with the provisions of the Act. These commissions operated within a limited regulatory framework and had restricted authority when it came to proactively shaping energy conservation policies at the state level.
With the introduction of the Energy Conservation (Amendment) Bill, 2022, the scope and authority of SERCs have been significantly enhanced.
The Bureau of Energy Efficiency (BEE) was established under the Energy Conservation Act, 2001 as a statutory body under the Ministry of Power. Its core mandate is to promote the efficient use of energy and resources across sectors, including industry, transportation, buildings, and appliances.
Until now, BEE’s Governing Council was constituted with representation from various ministries, industry stakeholders, and professionals, but its structure needed greater inclusivity and flexibility to match India’s evolving energy landscape.
The Energy Conservation (Amendment) Bill, 2022 proposes a more inclusive and representative composition of the BEE Governing Council, enabling the agency to operate with broader stakeholder input and deeper institutional strength.
Inclusion of representatives from diverse sectors, including:
Increased involvement of state-level energy regulators, aligning central and state energy efficiency efforts.
Enhanced scope for inter-ministerial coordination, improving the integration of energy efficiency across multiple policy domains (transport, construction, climate, etc.).
Together, the expanded roles for SERCs and the restructured BEE Governing Council mark a decisive move toward a more decentralized, participatory, and agile energy governance system in India. These reforms will: