India Solar Startup Doubles Valuation in 18 Months

A Mumbai company making it easier for Indian families to install rooftop solar panels is attracting major investment, signaling growing confidence in clean energy's future across the world's most populous nation.

SolarSquare is in advanced talks to raise up to $60 million in fresh funding, which would value the startup at around $450 million to $500 million. That's more than double what the company was worth in December 2024, when it secured $40 million in what became India's largest solar venture investment that year.

The startup has already made real progress on the ground. Since launching in 2015, SolarSquare has installed solar systems on nearly 50,000 homes and around 400 apartment complexes across 29 cities in nine states. The company handles everything from design to installation to maintenance, simplifying what can be a confusing process for homeowners.

Big names are taking notice. Companies like food delivery giant Swiggy and quick commerce startup Zepto have also chosen SolarSquare to power their facilities with rooftop solar. The startup has installed more than 150 megawatts of solar capacity total and now generates over $100 million in annual revenue.

The Ripple Effect

SolarSquare's growth mirrors India's broader clean energy transformation. The country jumped to become the world's third largest solar power producer in 2025, trailing only China and the United States. India's solar capacity has exploded from just 3 gigawatts in 2014 to more than 150 gigawatts today.

The national government has set an ambitious target of 500 gigawatts of renewable energy capacity by 2030, with solar expected to provide more than half. Government subsidies and incentives are helping ordinary families afford the switch to clean power.

What makes this particularly meaningful is that residential customers and apartment complexes now make up most of SolarSquare's business. These aren't just industrial projects. Real families are cutting their electricity bills while reducing their carbon footprint.

The investment is coming from experienced backers who see long term potential. Lightspeed Venture Partners, which previously funded India's leading payment platform Razorpay, is co-leading the new funding round through its growth fund alongside B Capital.

One family at a time, one rooftop at a time, India is proving that clean energy can scale rapidly when the right support systems exist.