Utility Scale Storage

An Ieefa report has suggested the cost of generating electricity from solar will be near zero in the world’s sunniest regions by 2030-40 – despite what the naysayers at the International Energy Agency might think.

Defining energy storage under the Electricity Act could help start ancillary services and frequency regulation through energy storage as a flexible asset. It will also help to enable electric vehicle charging infrastructure, vehicle-to-grid (V2G) concepts and microgrids integration with expanded grid connectivity in the long run, according to the industry body.

Covid-19 crisis has provided system operators with insights on keeping the grid stable with high levels of renewable penetration. Post Covid-19, this may be the new norm, Gautam Adani said in a LinkedIn post recently.

MIT scientists have suggested used electric vehicle batteries could offer a more viable business case than purpose-built systems for the storage of grid scale solar power in California. Such ‘second life’ EV batteries, may cost only 60% of their original purchase price to deploy and can be effectively aggregated for industrial scale storage even if they have declined to 80% of their original capacity.

The recently concluded 400 MW renewables auction to supply 24-hour electricity saw winning bid of INR2.90/kWh—a new milestone after peak+off-peak tariff of INR4.07 was achieved in January’s 1.2 GW auction demanding assured power supply during peak demand hours.

While the solar and storage pairing is still relatively new, the growth over the next five years will be significant globally. As against just 5% in 2019, by 2025 more than 25% of all behind-the-meter solar systems will be paired with storage.

Analysts at Bloomberg New Energy Finance say the lowest-cost projects financed in Australia, China, Chile and the UAE in the last six months hit a levelized cost of energy of just $23-29/MWh and the best solar and wind projects will produce electricity for less than $20/MWh by 2030.

Researchers from Deakin University in Australia claim their battery chemistry is based on a new class of electrolyte material which carries no risk of uncontrolled thermal events and represents a viable alternative to rechargeable lithium-ion batteries.

Earlier this year, when a landmark tender by India’s nodal agency for solar energy, Solar Energy Corporation of India (SECI), concluded the largest solar-cum-storage tender globally (~3 GWh of storage connected to 1.2 GW of solar), it highlighted a critical challenge India faces in bringing solar energy to scale: battery storage technologies.

Prospective bidders for 34 MW solar project in Telangana and 14 MW solar plus storage project in Ladakh have been asked to submit any queries online as pre-bid meetings get cancelled due to Covid-19 lockdown. Further, bidding deadline for Ladakh project has been revised to June 1.