Vetted Score
4.6
/ 5.0
Earns a high score for its zero‑cost model, comprehensive design tools, and seamless web access, making it a go‑to choice for solar installers.
Key Features
Automated Solar Layouts
Generate optimized panel layouts instantly using satellite imagery and AI‑driven shading analysis.
Instant Proposals & Contracts
Create professional, customizable proposals with financial calculations, financing options, and e‑signatures.
Live System Monitoring Integration
Connect designs to monitoring hardware for real‑time performance tracking and post‑install analytics.
Frequently Asked Questions
Yes, the core design and proposal features are free for unlimited projects; paid add‑ons are optional.
No, OpenSolar runs entirely in the browser, supporting all major modern browsers on any operating system.
Yes, designs can be exported as PDF proposals, CSV reports, and CAD files such as DXF for further engineering work.
Featured Lists & Comparisons
Top 20 Alternatives to OpusFlow in Solar Design & Proposal Software
Top 20 Alternatives to SAM in Solar Software
Top 20 Alternatives to NREL PVWatts in Solar Design & Proposal Software
Top 20 Alternatives to SolarPulse in Solar Software
Top 20 Alternatives to Solar Labs Design Studio in Solar Design & Proposal Software
Top 20 Alternatives to PV Planner (by Solargis) in Solar Software
Top 20 Alternatives to SunDAT in Solar Software
Top 20 Alternatives to Solar Proposals in Solar Design & Proposal Software
Top 20 Alternatives to HelioScope Designer in Solar Software
Top 30 Solar Design & Proposal Software
Specifications
Pricing Model
100% free core platform with optional paid add‑ons and enterprise services.
Supported Platforms
Web (Chrome, Firefox, Edge, Safari)