TATA Power positions itself as a pioneer in Renewable Energy with plans to ramp up to 15 GW capacity by 2030.
As per estimate, Green Hydrogen Demand in India is likely to be 19 Million Metric Ton Per Annum (Mt PA) which will require renewable capacity of 230 GW. The rapid growth targets on renewable capacity in India will be ably supplemented by TATA Power’s growth aspirations in solar, wind, hydro or hybrid solutions.
TATA Power is also actively looking at hydrogen as an alternative for Diesel Generator based or Battery based back-up power applications and is exploring hydrogen as an energy storage and back-up power solution in microgrids as renewable energy is intermittent. With a target of 10,000 micro-grids by 2026, TATA Power is looking at bringing clean and green energy with a mix of solar/wind and green hydrogen subject to solution becoming techno-commercially viable.
TATA Power is also strongly placed in the Hydrogen Generation sector with prior experience in operating electrolyzers for producing hydrogen in its thermal plants for turbine generator cooling. The experience gained is helpful in evaluating electrolyzer technologies available globally and adopt cost-effective solutions in making green hydrogen generation a reality in India.
TATA Power is exploring the possibility of collaborating with TATA group of companies for opportunities in the Power to Gas (P2G) application. The possible applications of Green Hydrogen include injecting into natural gas grid, replacing brown hydrogen with green hydrogen in steel, fertilizer and other industries. TATA Power is also actively evaluating opportunities for utilizing green hydrogen along with captured CO2 from its thermal plants as a source of green methanol and other CO2 conversion products.
In the Power to Hydrogen to Power (P2P) application, the overall system efficiencies are very low thereby making power from hydrogen unviable. The round-trip efficiency considering 65% efficiency for Electrolyser and 50% for a fuel cell is roughly 32.5%. For the solution to be viable, the round-trip efficiencies need to be improved to more than 50%.
Capital costs of the Electrolyzer and Fuel Cell continue to be a bottle neck for large scale implementation of green hydrogen generation and energy storage projects. At present costs, the cost of power from hydrogen exceeds all existing modes of power generation & storage solutions. This makes hydrogen energy storage solution unviable. With the thrust on hydrogen economy globally, the sector needs massive subsidies from the Government to enable low cost production of Electrolyzer and Fuel Cell systems in India. Technology maturity and economies of scale should also play a major role in reduction of overall capital costs.
Hydrogen being the lightest molecule also suffers from high storage costs particularly due to the relatively low densities. Therefore, it needs to be compressed and stored to justify the volume occupied. Other options such as hydrides, Liquid H2, salt caverns etc. are still evolving.
For the hydrogen economy to be truly implemented, a dedicated distribution infrastructure needs to be in place for which massive investments and subsidies are needed.
Energy Compact Description
- As a socially responsible company, TATA Power has undertaken to not extend the life of its thermal assets beyond their rated life.
- TATA Power has also committed to increase Renewable Energy portfolio to 15 GW by 2030.
- TATA Power is actively scouting for promising technological solutions in the green hydrogen value chain (P2G, P2P, P2C) in order to deliver affordable hydrogen-based solution in the country.
- Government of India is also working on National Hydrogen Energy Mission (NHEM) & making policies for increasing demand like mandate for use of hydrogen in industry, open access for renewable power transmission etc.
Energy Compact Indicators
- Carbon Neutrality before 2050.
- By increasing the renewable portfolio, TATA Power will reduce CO2 intensity.
- With phase-out of thermal units, the absolute CO2 will reduce.
- Improvement in round trip efficiency in the P2P and Electrolyzer efficiency in P2G thereby reducing the losses in the green hydrogen value chain.
- Reduction in capital costs of electrolyzers and fuel cells due to technology improvements or economies of scale and/or infusion of grants / subsidies from federal governments.
“The capital cost of the hydrogen generation plant and Fuel Cell system is very high making P2P & energy storage solution unviable. For the overall system to become viable, ramping up of manufacturing capability and setting up of manufacturing facilities in India needs to be incentivized. The overall round-trip efficiency also needs to be improved by way of technical improvements to reduce the requirement of renewable power“