OpenSolar
Free end-to-end solar platform — AI design, branded proposals, integrated finance options, e-signature, payments, and a built-in project CRM from lead through install.
- Best for
- Solar installers and EPCs that want design, proposals, and CRM in one place
- Price
- Free (core app); API and connectors are paid add-ons
- HQ
- United States / Australia (global product)
- Profile updated
- September 26, 2026
Worth it for your operation?
Pros
- Core product is free of charge for design, proposals, CRM, and project workflows
- Integrated finance options inside the proposal (cash, loan, lease paths by market)
- Project Management CRM with Kanban, stages, scheduling, and calendar sync
- E-signature and online payments tied to the same proposal
Watch-outs
- No Meta WhatsApp inbox on the lead card
- Plant-level production monitoring is not the product — O&M stays elsewhere
- API and deep connectors are paid add-ons (core stays free)
- Free does not mean “zero vendor stack” if you already run Salesforce or HubSpot beside it
Score by criterion
The dark mark on each bar is the average of the 11 CRMs in this ranking. Criteria with higher weight pull the overall score more.
PV sizing, shading, production estimates, and a customer-ready proposal or PDF without a parallel spreadsheet.
Quote and, when it exists, pre-approve solar loans, leases, or PPAs without retyping the homeowner in another portal.
Installed systems, service tickets, and a clean handoff from sales into install / O&M without an orphan spreadsheet.
Native SMS or messaging inbox on the lead card, with team history. WhatsApp Business API also counts. Marketplace apps, extensions, and website buttons do not.
Public plan, currency, trial, and whether you can start without a vendor sales call.
English UI, solar vocabulary (kW, shade, PTO, TPO), and time to the first usable proposal.
What ships natively
We only mark “yes” when the feature is part of the product — marketplace integrations or third-party apps do not count.
- Yes
Proposal generator
Builds photovoltaic proposals inside the CRM
- Yes
Financing
Credit simulation or underwriting in the product — solar or real estate, depending on the vertical
- No
Native messaging
Native SMS or messaging inbox on the lead/contact card (history preserved). WhatsApp Business API also counts. Marketplace apps, Zapier, browser extensions, website chat buttons, and sibling-SKU modules do not
- No
Monitoring
Tracks installed solar systems
- No
Website simulator
Simulator for the integrator’s website
- Yes
Project management
Installation and engineering stages
- No
Native marketing
Marketing automation in the same product
- Yes
Sales pipeline
Visual sales pipeline
Editorial analysis
OpenSolar in detail
OpenSolar is the unusual case in US solar software: a full design-to-CRM stack at $0 for the core app. The public pitch is blunt — 100% free of charge — and the product pages cover AI auto-design, branded proposals, finance comparisons, e-signature, payments, and a Project Management CRM with stages, assignments, and calendar sync.
Who it is for
Installers who are tired of paying per seat for design and another seat for CRM, and who want the proposal and the job record in one place. Teams that already standardized on Salesforce or HubSpot still show up in OpenSolar’s own API narrative — which is a hint that “free” and “system of record” are not always the same decision.
What drives the score
Price and proposal pull the ranking. Financing is real inside the proposal (cash vs finance paths, provider status tracking), which is why financing sits near the top of the vertical tools. Post-sale scores for project workflows, not for plant monitoring — monitoramento stays false. Messaging stays low — SMS/email live outside this product’s lead card.
How we read the sources
Profile based on opensolar.com, the Pro, Project Management CRM, and Integrated Finance pages. “28,000+ active solar professionals” and similar figures are vendor claims, not our measurement.
Frequently asked questions
Is OpenSolar really free?
The core design, proposal, CRM, and project tools are free of charge on the public site. OpenSolar documents paid API access and connectors for teams that sync an external CRM or accounting stack. Confirm the current add-on list before you budget for integrations.
Does OpenSolar replace a monitoring platform?
No. The post-sale score reflects project handoff, scheduling, and payments — not inverter telemetry. If O&M is the product you need, you still pair OpenSolar with a monitoring vendor.
Sources consulted
Everything on this profile comes from the pages below. We did not lab-test the platform.
- OpenSolar home(www.opensolar.com)
- OpenSolar Pro — design, sell, manage(www.opensolar.com)
- Project Management CRM(www.opensolar.com)
- Integrated Finance(www.opensolar.com)
Profile updated September 26, 2026. Found something outdated? Corrections are welcome.