New Delhi, April 28 -- Delhi has recorded the highest number of rooftop solar installations in the 2025-26 financial year, as per government data. The two power distribution companies in the city - Bombay Suburban Electric Supply (BSES) and Tata Power-DDL (TPDDL) - logged a total of 8,596 rooftop solar connections in the past year. According to the data provided by discoms, BSES energised 4,585 connections, up from 2,761 connections in 2024-25 and TPDDL recorded 4,011 installations this financial year, up from 1,849 in the previous year. Discom officials have attributed the jump to a stronger solar push, aided by combined incentives of up to Rs.1.08 lakh under the PM Surya Ghar: Muft Bijli Yojana and the new Delhi Solar Policy. Delhi's power minister Ashish Sood said the increase in numbers was a combination of lucrative subsidies and increased awareness. "We know there are challenges as not every household will have a rooftop with adequate space. However, we have been trying to aggressively promote solar rooftop installations and holding camps with RWAs across the city. This serves a dual purpose as it reduces electricity bills as well as air pollution," Sood told HT. He said the government is analysing alternatives for unauthorised colonies and flats, such as Odisha's Utility-Led Aggregation (ULA) model, where 1 kilowatt (kW) solar energy can be converted for Rs.5,000 upfront cost. "Over time, the number of installations should increase further. The previous governments did not allow the Centre to assist. We are allowing assistance under both the Central and state schemes," Sood said. Explaining the savings that a typical domestic user can incur, discoms said that under the CAPEX model, one can save around Rs.720 per month per kW installed. While, under the RESCO model, the estimated savings can range between Rs.240 to Rs.350 per month per kW. The solar Capex (Capital Expenditure) model involves the consumer paying the full upfront cost for solar equipment, installation, and operation while the RESCO (Renewable Energy Service Company) model is a zero-investment solar financing structure where a third-party developer owns, installs, operates, and maintains a solar power system on a client's property....