Comparison · Solar energy

OpenSolar vs Sunbase

Two paths for solar energy sales: an industry-built CRM versus an industry-built CRM.

Updated September 26, 2026

Higher scoreSolar CRM

OpenSolar

7.8

Strongout of 10

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.

Free (core app); API and connectors are paid add-ons

Read full profile Official site

Solar CRM

Sunbase

7.2

Fairout of 10

Modular solar software — CRM, PV design, proposals, and project delivery from lead through PTO, with plans starting at $59 per user per month.

From $59/user/mo

Read full profile Official site

Criteria where OpenSolar wins

Ties

Criteria where Sunbase wins

Score by criterion

In green, who wins the criterion. The overall score uses solar energy weights: proposal generator and financing weigh more.

CriterionOpenSolarSunbase

Proposal generator1.5×
PV sizing, shading, production estimates, and a customer-ready proposal or PDF without a parallel spreadsheet.
8.8
7.6
Financing1.2×
Quote and, when it exists, pre-approve solar loans, leases, or PPAs without retyping the homeowner in another portal.
8.5
6.2
Post-sale and monitoring1×
Installed systems, service tickets, and a clean handoff from sales into install / O&M without an orphan spreadsheet.
7.8
7.6
Native messaging0.9×
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.
3.5
7.8
Price and transparency0.8×
Public plan, currency, trial, and whether you can start without a vendor sales call.
9.8
7.0
Learning curve0.8×
English UI, solar vocabulary (kW, shade, PTO, TPO), and time to the first usable proposal.
8.0
7.2
Overall score
7.8
7.2

Native features

Only what is part of the product counts. Marketplace integrations or third-party apps are out.

FeatureOpenSolarSunbase

Proposal generatorYesYes
FinancingYesNo
Native messagingNoYes
MonitoringNoNo
Website simulatorNoNo
Project managementYesYes
Native marketingNoYes
Sales pipelineYesYes

Compare with another rival

Each pair has its own page. The ranking only highlights the main duels — the rest are here and on each CRM profile.