A study by the India Energy and Climate Centre (IECC) at UC Berkeley reveals that pairing solar generation with battery storage can supply continuous, firm renewable energy at ₹5.15 per unit—outperforming the ₹5.25–₹5.26 per unit rate established in SECI’s 1,000 MW round-the-clock (RTC) auction.
Analyzing a decade of hourly meteorological data across 10 Indian states, researchers determined that India’s consistent solar radiation makes battery systems ideal for shifting excess daytime generation to cover peak evening and nighttime loads.
Key Findings Overview:
Estimated Generation Cost: ₹5.15 per kWh (vs. SECI auction tariff of ₹5.25–₹5.26/kWh)Model System Size: 3 GW solar capacity paired with 12 GWh battery storage (evaluated in Rajasthan)
Operational Strategy: Meets SECI’s firm supply profile by curtailing midday dispatch and maximizing output during high-demand morning, evening, and night windows