We’ve recently completed a $20 million equity raise from leading technology investors including Titanium Ventures, Google, and 2150 Sustainability Fund, among others, who share our belief that clean-energy progress comes from empowering the people who deliver it.

Back in 2019, we had this crazy idea: what if we gave away the world’s best solar design software…for free? No catch. No upsell. No subscription plan lurking behind a 14-day trial. Just pure, open access to solar software that actually worked. We believed that solar pros deserved better than clunky desktop relics and overpriced platforms. Since then, more than 25,000 installers across 160+ countries have joined us. They’ve used OpenSolar to sell smarter, move faster, and buil

Inside OpenSolar’s milestone and what it says about the future of clean energy.