When most startups pitch “free,” it’s usually bait-&-switch. A 14-day trial, a “lite” version that’s about as useful as a butter knife in a sword fight. OpenSolar didn’t play that game. Andrew Birch and Adam Pryor built the 1st truly free, end-to-end solar OS for installers, and then scaled it across 25,000+ businesses in 160+ countries. No smoke, no mirrors. Just a platform that lets solar pros design, sell, install, & manage systems with AI baked in, $0 upfront cost, and enough integrations to feel like the Apple ecosystem of renewables.
The payoff? $10B+ in solar sales run through the platform, 6M system designs completed, & 63M metric tonnes of CO₂ avoided over system lifetimes. That’s not “solid traction.” That’s an economy-sized lever pulled by a team of just 100+ people in 15 countries, quietly reshaping solar economics while competitors still nickel-&-dimed installers for basic software licenses.
Now comes the recharge. OpenSolar raised $20M equity funding led by Titanium Ventures, with Google & 2150 Sustainability Fund in the round. Add that to a $15M Series B in Dec ’22 from Telstra Ventures & earlier backing from Titan Grove, Alec Guettel, & Howard Wenger, and you’ve got ~$57M total fuel for a global sprint. The board got sharper too with Titanium Ventures GP Albert Bielinko joining.
This isn’t just another SaaS raise. It’s a masterclass in product-market discipline. OpenSolar didn’t chase bloated subscription models or lean on subsidies. They built a free platform installers actually wanted, layered in hardware & finance partnerships to monetize, & earned adoption by delivering efficiency that mattered. It’s the rare case where “freemium” didn’t bleed the balance sheet, it built one.
Andrew Birch brings Sungevity scars & wins into every decision, while Adam Pryor keeps pushing design automation like it’s a lifelong obsession. Around them, leaders like Lavinia Davison running ops, Joseph Abel on product, Patrick Crane driving growth, & David Griffiths steering commercial strategy keep the engine tuned. When a crew with this pedigree points its AI toolkit at a $3T global solar transition by 2030, you don’t bet against it.
OpenSolar isn’t just scaling software. It’s scaling sunlight into currency. With Titanium Ventures, Google, & 2150 in their corner, the grid of the future isn’t a political talking point, it’s a business reality.
