Green hydrogen energy refers to hydrogen produced by splitting water through electrolysis using electricity generated from renewable sources such as solar and wind. Because the power input is clean, the hydrogen carries virtually no carbon emissions, unlike "grey" hydrogen made from natural gas, which most industries use today. Green hydrogen is considered a key pillar of the energy transition because it can decarbonise sectors that direct electrification cannot easily reach, such as steel, refining, fertilisers and heavy transport.

The Green Hydrogen Mission, officially called the National Green Hydrogen Mission, is India's flagship programme to make the country a global hub for green hydrogen production, usage and export. Its headline targets include building green hydrogen production capacity of about 5 million tonnes per year by 2030, adding around 125 GW of associated renewable energy capacity, and offering incentives for electrolyser manufacturing and hydrogen production. The Mission also supports pilot projects in steel, mobility, shipping and distributed applications, and it is a frequently asked topic in UPSC current affairs and energy-sector interviews.

Green hydrogen is produced by passing electricity from renewable sources — usually solar or wind — through an electrolyser, which splits water into hydrogen and oxygen. The main technologies are alkaline and PEM (proton exchange membrane) electrolysers, with solid oxide systems also emerging. If the electricity comes from renewables, the process emits no carbon dioxide. Key considerations include the cost and availability of renewable power, electrolyser efficiency, water supply, and how the hydrogen will be stored, compressed or converted, for example into ammonia, for transport.

Green hydrogen is used as a fuel and industrial feedstock in sectors that are hard to electrify directly. Major applications include oil refining, fertiliser production through green ammonia, steelmaking, buses and long-haul trucks running on hydrogen fuel cells, shipping fuel in the form of green ammonia, and blending with natural gas in pipelines or gas turbines for power generation. It can also serve as long-duration energy storage, absorbing surplus solar and wind power and releasing it when generation dips.

The green hydrogen market in India is expected to expand significantly over the coming decade, driven by the National Green Hydrogen Mission, falling solar and electrolyser costs, and strong export demand from regions such as the EU and the Middle East. Production is likely to scale first in states with cheap renewable power and port access, with refiners, fertiliser plants and steel makers acting as anchor buyers. Beyond production, growth is opening up in electrolyser manufacturing, storage and transport infrastructure, engineering services and skilled jobs, making it one of the most closely watched segments of India's energy economy.

India's green hydrogen push is being led by a mix of large private conglomerates and public sector energy companies. Prominent names include Reliance Industries, Adani Group, Larsen & Toubro and ACME, along with PSUs such as NTPC, Indian Oil, GAIL and SJVN, all of which have announced green hydrogen projects or pilots. The wider ecosystem includes electrolyser manufacturers, EPC and engineering firms, and a growing set of startups working on production, storage and end-use applications. Job seekers and vendors can track announced projects, tenders and pilot awards to identify the most active players.

Setting up a green hydrogen plant in India typically begins with a feasibility study covering renewable power availability, water supply, land and proximity to offtakers. The core steps are selecting and sizing the electrolyser, arranging renewable electricity through captive plants, open access or a power purchase agreement, and planning storage, compression and purification systems, followed by approvals and safety clearances. Developers should also factor in incentives available under the National Green Hydrogen Mission and secure an offtake arrangement with refiners, fertiliser units or export buyers before committing investment, since policy and technology choices strongly affect project economics.

Renewable energy sources are naturally replenishing sources of energy — mainly solar, wind, hydro, biomass, biogas and geothermal, along with ocean energy from tides and waves. Unlike coal, oil and gas, they do not deplete with use and emit little to no greenhouse gases during operation. In India, solar and wind are growing the fastest, supported by large-scale parks, rooftop programmes and falling equipment costs, while hydro and biomass continue to play important regional roles.

Renewable energy engineering is the branch of engineering focused on designing, building and operating clean energy systems such as solar PV plants, wind farms, hydro projects, biomass plants, energy storage and grid integration solutions. It blends electrical, mechanical, civil and chemical engineering fundamentals with specialised knowledge of power electronics, energy modelling and project management. Students usually enter through BTech or MTech programmes in energy or renewable energy engineering, or by specialising after a core engineering degree. With India targeting a massive expansion in non-fossil capacity, demand for renewable energy engineers spans developers, EPC companies, manufacturers, consultancies and utilities.

For businesses and institutions, the transition usually starts with an energy audit and load analysis, followed by a combination of measures: installing rooftop or captive solar, buying green power through open access or renewable energy certificates, signing power purchase agreements, improving energy efficiency, and adding storage or green hydrogen for harder-to-abate loads. A phased roadmap with measurable milestones works better than a one-time switch. For professionals, transitioning into the renewable energy sector generally means building credentials in areas like solar and wind technology, project development, energy policy or climate finance and targeting the rapidly growing base of developers, EPC firms and consultancies.

The energy transition index is an annual benchmark published by the World Economic Forum that ranks countries on how well their energy systems perform today and how prepared they are for a secure, sustainable and affordable energy transition. It evaluates dimensions such as energy security, energy access and affordability, environmental sustainability, and the enabling environment for transition, including regulation, investment, infrastructure and innovation. Policymakers, investors and energy companies use the rankings to compare national progress, and India's position in the index is tracked closely in the Indian media every year.

Energy transition infrastructure refers to the physical assets and systems required to shift from fossil fuels to clean energy. It includes renewable generation such as solar and wind farms, transmission lines and grid upgrades to handle variable power, battery and pumped hydro storage, EV charging networks, electrolysers and hydrogen pipelines, carbon capture facilities, and the retrofitting of industries and buildings. Building this infrastructure at scale represents one of the largest investment and employment opportunities of the coming decade, both globally and in India.

India's renewable energy sector is led by large private developers such as Adani Green Energy, Tata Power, ReNew and Hero Future Energies, alongside strong public sector players like NTPC Green Energy, SJVN and NHPC. The ecosystem also includes solar module manufacturers such as Waaree and Vikram Solar, wind turbine makers such as Suzlon, and a wide base of EPC contractors and rooftop players. Job seekers often shortlist renewable energy companies in India by technology focus (solar, wind, hybrid), function (business development, project management, O&M, policy) and project scale.

The Middle East energy job market is gradually shifting from pure oil and gas towards clean energy, with major programmes in solar, green hydrogen and energy transition across the UAE and Saudi Arabia. To get a job in the energy sector in Dubai or the wider Gulf, focus on targeting employers that are actively hiring — developers, utilities, consultancies and EPC majors; tailoring your resume to GCC hiring norms with emphasis on large-project or international experience; adding relevant certifications in renewables, project management or energy modelling; and networking actively on LinkedIn and through industry events, since much of the region's hiring happens via referrals and recruitment agencies. Knowing the major employers and upcoming projects in the region gives candidates a clear edge in interviews.

The right choice depends on your background, but popular paths include BTech and MTech programmes in energy or renewable energy engineering, MBA and postgraduate programmes in energy management, and short-term certifications in solar design, wind energy, energy modelling, ESG and sustainability reporting. For those aiming at green hydrogen, courses covering hydrogen technologies, electrolysis and energy storage are increasingly valuable. Professionals from conventional energy often upskill through climate policy, carbon management and project finance courses to pivot into the energy transition. A course with strong industry projects and faculty from the energy sector usually delivers more value than the brand name alone.