Green hydrogen (GH2)  is a type of hydrogen produced through water electrolysis (water splitting) using renewable energy sources such as solar, geothermal, or wind power. This process releases hydrogen gas as a byproduct. It produces zero greenhouse gas emissions, making green hydrogen a clean and sustainable energy alternative to traditional hydrogen (blue and grey) which is often produced from fossil fuels.
Green hydrogen production is currently still in its early stages of development and is not yet widely produced at an industrial scale. As per the International Energy Agency (IEA), global green hydrogen production in 2020 was around 1 million tons, with the majority of production taking place in Europe, followed by Asia and North America. However, there is significant interest in developing and growing the green hydrogen industry, and many countries have set ambitious targets for increasing production in the coming years. As technology advances and costs decrease, green hydrogen (GH2) is expected to play an increasingly important role in the transition to a low-carbon energy system.
Green hydrogen offers several advantages compared to traditional hydrogen production:

1. Clean and sustainable: Green hydrogen is produced using renewable energy sources, making it a clean and sustainable alternative to traditional hydrogen, which is often produced from fossil fuels.
2. Low emissions: The production of green hydrogen releases zero greenhouse gas emissions, making it a key solution for reducing carbon footprint and mitigating climate change.
3. Versatility: Hydrogen can be used in various applications, from fuel for transportation to a source of energy for homes and industries.
4. Energy storage: Green hydrogen (GH2) can be stored and transported easily, making it a valuable tool for energy storage and grid management.
5. Supports the growth of renewable energy: The production of green hydrogen requires large amounts of renewable energy, which helps drive the growth of the renewable energy sector.
6. Can create jobs and boost economic growth: The growth of the green hydrogen industry has the potential to create new jobs and spur economic growth, particularly in regions with abundant renewable energy resources.

Green hydrogen production is still in its early stages of development in India, but there is growing interest and invested in the sector.

The Indian government (GOI) has set ambitious targets for the growth of renewable energy, and green hydrogen has been identified as a key technology for achieving these goals.

• The Indian government has launched several projects to support the growth of the green hydrogen industry, including the National Hydrogen Energy Roadmap, which outlines the country's strategy for developing the hydrogen sector. The roadmap aims to establish India as a major player in the global hydrogen market and promote the use of green hydrogen for various applications, including energy storage, transportation, and industrial processes.
• Several companies and research institutions in India are working on the development of green hydrogen technologies, and there are also initiatives underway to set up green hydrogen production facilities in various regions of the country. However, the scale of green hydrogen production in India is still relatively small compared to other countries, and there are still several challenges to be addressed, such as the high cost of production and the lack of a well-developed infrastructure for the distribution and use of hydrogen.