SolarSquare Eyes $60M Series C as India’s Residential Solar Boom Ignites VC Interest
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A Surge in Residential Energy
SolarSquare, the Mumbai-based startup tackling the fragmented rooftop solar market in India, is currently in advanced negotiations to secure up to $60 million in new capital. The pending Series C round, which is expected to close next month, is set to be co-led by B Capital and Lightspeed Venture Partners, according to sources familiar with the deal.
If finalized, the investment could push SolarSquare’s valuation into the $450 million to $500 million range. This would represent a staggering leap in valuation—more than double what the company was worth just 18 months ago—underscoring a growing conviction among venture capitalists that India’s residential solar sector is hitting a critical inflection point.
The Shift to Full-Stack Solar
For years, the Indian rooftop solar landscape has been a chaotic patchwork of small-scale local installers and dealer networks tied to hardware giants like Tata Power, Waaree Energies, and Luminous Power Technologies. SolarSquare is attempting to disrupt this by positioning itself as a “full-stack” platform, handling everything from initial design and installation to long-term maintenance.
While the company initially balanced its portfolio with industrial projects, it has strategically pivoted. Sources close to the company’s operations indicate that SolarSquare has scaled back lower-margin industrial work to focus heavily on homes and housing societies—the gated apartment complexes that define urban living in India. This pivot is paying off; the company has reportedly crossed an annualized revenue run rate exceeding ₹10 billion (approximately $104 million) across its residential and society segments.
Market Momentum and Macro Targets
The timing of this funding push aligns with India’s aggressive climate goals. The government has set a target of 500 gigawatts of renewable energy capacity by 2030, with solar power expected to provide the lion’s share of that growth. By 2025, India had already ascended to become the world’s third-largest solar power producer, trailing only China and the U.S.
This growth is not accidental. A combination of government subsidies and a growing middle-class desire for energy independence has driven cumulative installed solar capacity from a mere 3 GW in 2014 to over 150 GW by 2026. SolarSquare is riding this wave, having already powered nearly 50,000 homes and roughly 400 housing societies across 29 cities in nine states.
Investor Conviction
Lightspeed Venture Partners is no stranger to the company, having led a $40 million Series B round in December 2024. For this latest round, however, Lightspeed is reportedly deploying its growth fund—the same vehicle used to back high-growth Indian winners like the payments platform Razorpay and the quick-commerce startup Zepto.
Existing investor Elevation Capital is also expected to participate in the round. To date, SolarSquare has raised approximately $61.1 million in equity financing, according to data from Tracxn. The company has also successfully diversified its enterprise client list, deploying systems for high-profile startups including Swiggy and iD Fresh Food.
As the company looks to reach 200 megawatts in its residential portfolio this year, the injection of fresh capital will likely be used to penetrate deeper into Tier-2 and Tier-3 cities where solar adoption is beginning to accelerate. SolarSquare, B Capital, and Lightspeed have all declined to comment on the ongoing negotiations.
