Kerala Rooftop Solar Boom Poised To Outpace Hydropower In Energy Mix
Kerala’s solar energy capacity is fast catching up with hydropower, marking a critical shift in the state’s renewable energy landscape. According to the state electricity utility, solar power—particularly from rooftop installations—is poised to overtake hydel generation, signalling a transformative change in how Kerala sources its clean energy. The state is now facing the twin challenge of managing growing daytime energy exports and rebalancing its grid for a new solar-dominated.
Grid data shows that 75% of solar output from prosumers is exported, with domestic users contributing nearly 80% during peak solar hours. In 2024–25, daytime exports rose to 877 million units, more than doubling from two years ago. This surge, while positive for sustainability targets, is putting stress on Kerala’s grid infrastructure. The electricity board is now grappling with absorption and balancing challenges during high solar input periods, prompting calls for revised grid protocols and enhanced energy storage capabilities. Wind energy continues to play a minimal role in the state’s mix at just 3%, and overall, renewable energy—including hydropower—contributes to 65% of Kerala’s power needs. Coal remains the second largest source at 31%, revealing the balancing act between legacy systems and renewable ambitions.
Experts caution that while Kerala’s decentralised solar growth is commendable, grid integration, incentivisation, and smart infrastructure are urgently needed to ensure stability. As the draft renewable energy regulations are being finalised, the coming months will be crucial in determining how the state leverages its solar momentum without compromising system efficiency or stakeholder equity. Adding to the complexity, officials highlight that Kerala’s solar transition is not just a technological shift but also a behavioural one. With prosumers rapidly expanding across residential and commercial sectors, there is an urgent need for public awareness campaigns that promote responsible energy usage and grid cooperation.
Experts suggest that incentivising battery storage at the household level, time-of-day tariffs, and community energy management could play a critical role in smoothing out fluctuations and preventing renewable energy from becoming a burden on the very systems it aims to decarbonise.
