The world's leading solar design and proposal software

Free of charge so you're free to grow

3D solar design and shading analysis

We're obsessed with making solar professionals successful. That's why our system is designed to work around you and your business

OpenSolar around the world

Solar professionals from 120+ countries use OpenSolar to help run their businesses

Map data ©2021 Google

Why choose OpenSolar

3D Design, Leading Accuracy

The fastest, simplest and most accurate 3D design tool available, making your proposals reliable and bankable from the office and in the field.

Open API

Integrate your existing CRM and business tools with our class-leading platform.  Work the way you want to work.

Proposals that Sell

Fully customizable, interactive proposals online or as a PDF.  24% sale conversion drawn from experience selling 10,000's of systems, face-to-face and over the phone.

End-to-end Software

Built-in CRM, digital scheduling, real-time customer alerts, hardware catalogs, on-demand permitting and e-signatures.

Integrated Finance Partners

Effortless selection and integration of your chosen finance providers with in-app real-time approvals, making selling easier than ever.

sale tag that says "free"

Free of Charge

All of this, for free, for all users, forever.


Profile image of Casey Coffman from Laibach Solar.

Casey Coffman

Laibach Solar

California, USA

“We were paying thousands of dollars per year on a design tool that was way slower and less accurate.  Now all of our team use OpenSolar for designs, proposals and managing our installs, for FREE - it's also really cool that we can brand the whole experience for our customers."
Profile image of Jessa Gray from Solaria

Jessa Grey


Seattle, USA

"OpenSolar has been a game changer for our dealers.  The design tool is so sophisticated, and the proposal functionality really makes them stand out.  I like the exhibit capability that includes a multi-media presentation of equipment, right there in the proposal."
Profile image of Kyle Bank from Meta Solar

Kyle Bank

Meta Solar

California, USA

“A lot of our sales come directly from the field thanks to OpenSolar.  Right there on their iPads, face to face with the customer, my team can design a fully accurate system and generate a proposal.  And customers can get financed and sign the contract right there!"

Trusted by our leading global partners

Dedicated mobile apps

Design and sell directly from the field on our dedicated mobile apps.

Google Play image link that says, "Get it on Google Play"
Apple image link that says, "download on the App Store"
OpenSolar design and proposal software dedicated mobile app