San Francisco, July 22, 2025 – OpenSolar, the world’s leading solar design and proposal software, has reached a major milestone: $10 billion in solar sales and installations enabled through its technology. This milestone reflects exponential growth, with billions of dollars of Gross Merchandise Value (GMV) now changing hands on the platform every year. OpenSolar’s rapid global adoption and its pivotal role in scaling the clean energy transition has been achieved by equipping installers with best-in-class tools—at zero cost.
Since its founding in 2019, OpenSolar has empowered solar professionals to streamline operations, reduce soft costs, and accelerate project timelines.
“Crossing $10 billion in solar sales shows what happens when the right model meets real-world demand. Most raise a Series B and start charging more. We raised ours, kept access open and free, and continued to grow at 36 percent per year,” says Andrew Birch (“Birchy”), co-founder and CEO of OpenSolar. “Today, more than 25,000 solar pros in 160 countries use our technology to design better projects, faster. This is climate action at work, in the real world, and at scale.”
To date, the systems sold through OpenSolar will, over the course of their useful lives, prevent an estimated 63 million metric tonnes of CO₂ from entering the atmosphere.
“Using OpenSolar’s project management tools, we cut down on admin time and eliminated double-or triple-handling of client data—streamlining operations and improving visibility across our team,” says Jack Major, Sales Director at 4 Way Electrical Ltd (UK).
As global demand for solar surges, OpenSolar continues to lead with innovation and accessibility, removing friction so the people powering the clean energy transition can focus on what matters: building a livable planet.
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About OpenSolar
OpenSolar is the world’s leading solar design and proposal software with the mission to scale solar globally by providing installers with innovative software technology and an equally innovative business offering – the world’s first entirely free-to-use design and sales platform. Over 25,000 solar installers in 160+ countries today use OpenSolar’s end-to-end platform to manage and grow their businesses all in one place with class-leading solar design accuracy, interactive custom proposals, and a portfolio of fully integrated financing options, hardware ordering, and industry products & services.
