Energy is a key factor in combating climate change, one of the biggest challenges the world is facing today. India has committed to cutting emissions to net zero by 2070 and set ambitious targets for adopting renewable energy. Achieving these targets requires careful planning and an overhaul of our current energy system.
Our work aims at enabling policies that encourage the adoption of rooftop solar, facilitate the development of technology for energy storage, strengthen the grid and transmission infrastructure, advance hydrogen technologies, and promote green mobility. CSTEP's research looks at the various aspects of mainstreaming renewable energy for a cleaner, greener energy sector.
Pumped Hydro: Money Matters
There is an urgent need to ramp up utility-scale energy storage solutions in the power grids of most countries. This surge in demand for energy storage is being experienced due to renewable capacity increment and its intermittencies. Pumped-hydro energy storage (PHES) is one of the most promising solutions. However, PHES systems are significantly more expensive than conventional hydro power plants. Therefore, some countries are providing funding support of various kinds to attract investors and developers towards this sector.
Techno-Economic Analysis of Pumped-Hydro-Energy Storage as Peaking Power Plants in India for High Renewable Energy Scenarios
Existing pumped-hydro-energy storage (PHES) plants in India are inadequately utilised and hence have low economic benefits. With high renewable energy (RE) penetration expected in the coming years, energy storage systems will gain prominence. One of the most economical, available, mature, and bulk energy storage mechanisms is PHES. However, PHES plants are capital-intensive and topographically dependent.
How India Can Accelerate Pumped Hydro Storage for a Clean Energy Future
India’s clean energy transition is largely driven by the ambitious target of installing 450 gigawatts (GW) of renewable energy (RE) by 2030. While such huge RE deployment can pose several operational and technical challenges for the grid, energy storage can mitigate them.
Pricing Mechanism of Pumped-Hydro Storage in India
India is planning to install 450 GW of renewable energy (RE) generation capacity by 2030. A major share of RE comes from solar and wind energy sources. These are highly intermittent sources of energy, and the generation of power from these cannot be accurately predicted. Moreover, power from these RE sources cannot be dispatched based on real-time demand. This is where utility-scale energy storages, with the ability to manage grid-balancing issues, come in. Among these, pumped-hydro energy storage (PHES) is a mature technology.
Significance of DRE Systems in Strengthening the Electricity Infrastructure
The draft NEP, besides recognising the significance of RE hybrids (like solar-biomass, solar-hydro) for sustainable generation, highlights the role of DRE in reducing dependency on the transmission network, especially through solar rooftops in urban spaces and mini-grids in remote villages.
However, large-scale deployment of DRE systems will throw up issues related to intermittency, voltage instabilities, variable RE (VRE) curtailments, and network management.