The Delhi Electricity Regulatory Commission (DERC) has given its initial approval to BSES Rajdhani Power Limited (BRPL) to set up four grid-scale battery energy storage systems in south and southwest Delhi. The project aims to provide uninterrupted power supply during peak demand hours by adding a combined storage capacity of 55.5 MW at grid locations in Malviya Nagar, Matiala, Dwarka, and Goyla Khurd. The storage systems will enhance supply reliability, improve network utilization, and reduce the stress on congested feeders.
The systems will use lithium iron phosphate (LFP) batteries, which are valued for their safety, thermal stability, and long lifespan. These batteries will store electricity during off-peak hours and be discharged during high-demand periods, reducing the reliance on expensive power purchases. The batteries can also serve as a backup during faults or planned maintenance.
BRPL, a joint venture of Reliance Infrastructure and the Delhi government, supplies electricity to over 32 lakh consumers across south and west Delhi, covering more than 700 sqkm and serving over 1 crore residents. In May, the first such storage system was commissioned at Kilokari, providing up to four hours of power daily. The new project is part of BRPL’s broader strategy to integrate renewables, as grid-scale battery storage is crucial for cities like Delhi, where fluctuating demand and space constraints limit conventional infrastructure expansion.
The use of battery energy storage systems will support the integration of renewable energy sources such as solar and wind power, reducing the city’s reliance on fossil fuels and mitigating the impact of climate change. The project is expected to improve the overall efficiency and reliability of the power supply system, providing a more stable and sustainable energy future for the residents of Delhi. With the approval of the DERC, BRPL is poised to take a significant step towards a more sustainable and reliable energy system, setting an example for other cities to follow.