The Delhi Electricity Regulatory Commission (DERC) has approved a Power Sale Agreement (PSA) between BSES Yamuna Power Limited (BYPL) and the Solar Energy Corporation of India (SECI) for the procurement of 500 MW of wind-solar hybrid power bundled with energy storage.
The approval allows BYPL to source power under SECI’s ISTS-connected wind-solar-hybrid scheme with storage, strengthening Delhi’s clean-energy portfolio while ensuring supply stability during peak hours.
Solar + Storage Structure Cleared by Regulator
Under the arrangement, BYPL will procure:
- 500 MW of wind-solar hybrid power
- 250 MW / 1,000 MWh of Energy Storage System (ESS) paired with the project
The agreement enables firm and dispatchable renewable power for Delhi’s distribution network, addressing intermittency issues associated with solar and wind generation.
Regulatory Order and Petition Details
The approval came through DERC Petition No. 26 of 2025, in which BYPL sought permission for adoption of tariff and validation of the PSA signed with SECI.
DERC, after examining the proposal, granted approval for long-term procurement under the national competitive bidding mechanism for wind-solar hybrid projects with storage, noting the strategic importance of firm renewable supply for meeting Delhi’s growing demand.
Part of SECI’s National Hybrid & Storage Program
The project is part of SECI’s ISTS-connected Tranche-XVII tender for wind-solar hybrid power with energy storage, a nationwide scheme aimed at promoting dispatchable renewable energy at scale.
By joining this program, BYPL becomes one of the Delhi discoms actively integrating large-scale hybrid renewable energy with battery storage into its power procurement strategy.
Significance for Delhi’s Power Market
The regulatory clearance supports Delhi’s broader clean-energy transition by:
- Increasing renewable penetration in the city’s supply mix
- Adding storage-backed reliability to intermittent renewable generation
- Reducing exposure to peak-power procurement from conventional sources
- Strengthening long-term supply security under regulated tariffs
The approval comes amid rising momentum for hybrid renewable-plus-storage projects across India, as states look to meet renewable-purchase obligations while maintaining grid reliability. Delhi has increasingly turned to central procurement structures such as SECI to access competitively priced renewable energy backed by storage.
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