OpenSolar

Name: OpenSolar
Brand: OpenSolar
Rating: 4.8 (3 reviews)

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Accelerating solar adoption globally with free software for design, sales, and project management.

Sales Project Management Proposal Software

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Reviews onG2

3 reviews tracked

The Bottom Line

Entry price

Free, no paid tier

Biggest pro

Core software is free of charge for solar professionals.

Biggest con

API access and app connectors will incur charges starting April 2026.

TL;DR - OpenSolar

Free software for solar professionals to design, sell, and manage projects.
Offers an end-to-end workflow including AI lead gen, auto design, and integrated finance.
Committed to accelerating global solar adoption with continuous product enhancements.

Pricing: Free forever

Best for: Individuals & startups

What is OpenSolar?

Editorial review

OpenSolar provides a comprehensive, free software platform designed for solar professionals to streamline their entire workflow, from initial design and sales proposals to project management and payments. It empowers solar installers and companies to efficiently create accurate solar system designs, generate detailed sales proposals, and manage customer projects. The platform also connects solar customers with qualified professionals for tailored quotes. OpenSolar is committed to accelerating the adoption of solar and renewable energy worldwide by offering its class-leading software completely free of charge. This approach benefits over 28,000 active solar professionals in more than 185 countries, facilitating the growth and efficiency of the solar industry.

Available on: Web

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourceopensolar.com ↗

Pros & Cons

Pros

Core software is free of charge for solar professionals.
Comprehensive end-to-end solution for the entire solar workflow.
Regular product updates introduce new features and improvements.
Supports integration with third-party tools and financial services.
Aims to increase profitability and efficiency for solar businesses.

Cons

API access and app connectors will incur charges starting April 2026.
Some advanced features or integrations may be region-specific (e.g., UK Finance Marketplace).

Ratings Across the Web

4.8(3 reviews)

OpenSolar holds an aggregate rating of 4.8 out of 5 from 3 reviews across G2, last checked March 19, 2026.

G23 reviews

4.8/5

Ratings aggregated from independent review platforms. Learn more

Preview

Key Features

Solar system design studioAI-powered lead generation technologyAuto System DesignSales proposal generation with whole-home electrification optionsIntegrated finance marketplace (e.g., UK Finance Marketplace, Sungage's Sunrise™ Escalator loan)Project Management CRM with task management toolsUnified payment request flow and bank transfer supportHardware shop and purchasing integration

Pricing Plans

Pricing checked Aug 27, 2026

Free

AI-powered software to design, sell and manage projects
World’s fastest, most accurate solar design tool with Ada AI
Dynamic, customizable proposals
Flexible payments, real-time updates, integrated communication tools
Branded proposals
View of customer’s home before and after solar electrification (solar, batteries, battery retrofits, EVs, heat pumps)
Built-in solar payments system
Branded invoices with easy payment options

Calculate your cost View full pricing

Is OpenSolar worth the price?

95/100

OpenSolar's pricing is incredibly generous, offering a fully-featured platform for free.

This makes it an exceptional value, especially for startups and small to medium-sized solar businesses looking to minimize overhead. It's best for any solar professional or company seeking a comprehensive, no-cost solution for their operations.

Hidden Costs & Gotchas

Potential for premium integrations later

No direct support tier mentioned

Hardware discounts may require volume

API usage limits not specified

How OpenSolar Compares to Competitors

Compared to competitors like Aurora Solar, which can cost hundreds per user per month, OpenSolar's free offering is revolutionary. Even simpler design tools like HelioScope typically involve significant subscription fees. OpenSolar stands out by providing enterprise-grade features at no cost, making it a disruptive force in the market.

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Best OpenSolar Alternatives

Top alternatives based on features, pricing, and user needs.

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All OpenSolar alternatives8+ tools ranked, pricing + verdict per pick OpenSolar vs FieldPulseHead-to-head: features, pricing, who wins OpenSolar vs AcceloHead-to-head: features, pricing, who wins OpenSolar vs BookipiHead-to-head: features, pricing, who wins

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OpenSolar FAQ

How does OpenSolar support the sales process for solar professionals?

OpenSolar provides tools for solar professionals to generate detailed sales proposals. It streamlines the creation of these proposals, helping to efficiently present solar solutions to potential customers.

What kind of user benefits most from OpenSolar?

Solar installers and companies benefit most from OpenSolar, as it is designed to streamline their entire workflow. The platform helps these professionals manage projects and create accurate solar system designs.

How is OpenSolar priced?

OpenSolar is free to use for solar professionals, with no paid plan required for its core software. This model aims to accelerate the adoption of solar energy by providing accessible tools.

Can OpenSolar integrate with other business tools?

Yes, OpenSolar supports integration with third-party tools and financial services. However, API access and app connectors will incur charges starting April 2026.

Why might a solar professional choose OpenSolar over FieldPulse?

A solar professional might choose OpenSolar because its core software is entirely free of charge, offering a comprehensive end-to-end solution specifically for the solar workflow. This contrasts with other field service management tools that may have different pricing models or broader industry focuses.

Does OpenSolar have any regional limitations for its features?

Yes, some advanced features or integrations within OpenSolar may be region-specific. An example of this is the UK Finance Marketplace, which is tailored to a particular geographic area.

Source: opensolar.com

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