Mumbai-based rooftop solar startup SolarSquare Energy has raised $50-55 million in a new funding round led by B Capital, valuing the company at up to $500 million and marking significant investor confidence in India’s accelerating residential solar sector.
- SolarSquare valuation jumps 2.5x to $500 million
- Funding round led by B Capital with existing investors
- Market opportunity boosted by government rooftop solar scheme
What happened
SolarSquare Energy, a Mumbai-based startup focused on residential rooftop solar installations, recently secured $50-55 million in funding led by B Capital. The new round of investment values the company between $450 million and $500 million, reflecting rapid growth compared to its prior valuation approximately 18 months ago. Existing investors such as Lightspeed Venture Partners and Elevation Capital also participated in the round.
Founded in 2015, SolarSquare initially operated in the B2B solar space before pivoting in 2021 to focus on designing, installing, and maintaining rooftop solar systems for households and housing societies. The company currently runs an annualized revenue run rate estimated between Rs 800-1,000 crore, with operating revenues doubling in fiscal year 2025 compared to the prior year.
Why it matters
This funding round underscores a growing investor appetite for full-stack rooftop solar platforms amid India's nationwide push to increase residential solar adoption. The government’s PM Surya Ghar Muft Bijli Yojana plan, aiming for solar installation in one crore homes by March 2027 with substantial subsidies, is driving market expansion and enhancing consumer affordability.
Historically, India’s rooftop solar market has been fragmented with many local installers and inconsistent after-sales service. Startups like SolarSquare are attempting to organize this emerging sector by providing integrated customer experiences, including financing support and maintenance. Their growth signals a maturing market attracting sophisticated venture capital focused on sustainable and scalable climate tech solutions.
What to watch next
SolarSquare’s execution of its expansion plans, including entering additional cities and investing in technology and brand building, will be crucial to capturing the vast untapped residential rooftop solar potential. The company’s ability to differentiate through installation quality, financing facilitation, and ongoing system monitoring will shape its market leadership in India’s competitive solar sector.
Investors will be monitoring how SolarSquare and similar players respond to policy incentives and the pace of household solar uptake under government schemes. Continued selective climate tech funding in India suggests that startups demonstrating visible revenue growth and alignment with regulatory frameworks will attract future capital, influencing overall sector trends.