‘We are turning rooftops into power plants’

Patna: As the state expands its renewable energy footprint, it is focusing on decentralised solutions, innovative solar technologies and agricultural solarisation, Rahul Kumar, director of the Bihar Renewable Energy Development Agency and managing director of NBPDCL, tells TOI’s Adwitiya Deb. Experts:What are Bihar’s primary challenges in adopting solar energy?Land scarcity is the biggest challenge. A 1 MW ground-mounted solar plant requires about four acres of land, which means a 500 MW project would need nearly 2,000 acres. Such projects can only be established on barren land, but most land in Bihar is fertile and used for agriculture. Therefore, the state is focusing on decentralised renewable energy by converting rooftops of govt buildings and homes into mini power-generation units.What is the road map for expanding solar capacity despite this land scarcity?We initially experimented with floating solar technology under the “Upar bijli neeche machli” initiative in Supaul and Darbhanga. While the concept was successful, operational issues emerged over time. Algae growth affected maintenance and shadowing reduced generation efficiency. As a result, we are now focusing on canal-bank solar projects, where panels are installed alongside canals. A 2 MW pilot project is already operational in Bikram.What are the next steps in this strategy?We are working with the water resources department to identify suitable land along canal networks for future projects. We have also received a no-objection certificate for 500 acres in Aurangabad, where Bihar’s first solar park will be developed.What is the status of the PM-KUSUM scheme in Bihar?In Dec 2025, orders were placed for 1.40 lakh solar pumps with a combined capacity of 456 MW. Commissioning began in May 2026 in Amas block of Gaya district. The entire project is expected to be completed by March 2027.Does the solar sector offer employment opportunities in the state?Yes. Many projects are being implemented under the renewable energy service company (Resco) model. While private developers execute the projects, they hire local workers for installation and maintenance. Installation activities generate short-term employment, while long-term operation and upkeep create sustainable job opportunities as Bihar’s solar sector continues to grow.