OpenSolar vs Solar1
OpenSolar
opensolar.com
Solar1
solar1erp.comSide by side
| Figure | OpenSolar | Solar1 |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · Solar Installation Software | 8.2 (#6) | 7.1 (#25) |
| Founded | 2019 | 2025 |
| Integrations | The API connects OpenSolar with CRM, accounting, operations, and incentive tools, and supports project, design, pricing, hardware, and contact data. | Integration work is scoped after the systems, data objects, sync direction, ownership, authentication, error handling, and reconciliation requirements are documented. |
| Security | OpenSolar says it encrypts stored data at rest and data in transit using TLS/SSL, and uses role-based access controls. | Solar1 says production transport is expected to use HTTPS/TLS, while storage and backup encryption controls are reviewed before operational data is imported. |
| Support | OpenSolar says free accounts include dedicated 24/7 support, with live support, ticket-based help, training, webinars, and a Help Center. | The public pricing page says it does not promise a default support package; support terms are reviewed before rollout and recorded in the commercial agreement. |
Plans
In their own words
OpenSolar
OpenSolar is a platform for solar professionals to design, sell, and manage projects. Its Ada AI can create multiple system designs in seconds based on design preferences. Users can prepare customizable, branded proposals with flexible payments and real-time updates, then manage invoices, payment milestones, reminders, online payments, and e-signatures. Equipment ordering is built into the design experience, and the hardware catalogue can produce a bill of materials. An API connects project, design, pricing, hardware, and contact data with CRM, accounting, operations, and incentive tools. OpenSolar Pro costs nothing; the listing also notes a free plan and a 30-day trial. API Access is a paid add-on with a 30-day free trial; its geo-specific fee applies when a project is created, with billing starting at the beginning of the closest month after the trial. OpenSolar lists Android, iOS, macOS, web, and API access. It says stored and transmitted data are encrypted and targets 99.95% service availability.