Incentives · As at October 2026
Commercial Solar Incentives in Ontario.
Two programs pay for most of a business rooftop system: the IESO Save on Energy incentive and the federal Clean Technology tax credit. With accelerated first-year depreciation on top, about 65% of a typical system's cost is covered.
Provincial
Save on Energy Retrofit Program
- Rate: $770 per kW AC (77¢/W AC) for systems more than 10 kW AC, up to 1 MW AC.
- Cap: up to 50% of eligible project costs.
- What qualifies: rooftop and parking canopy systems. Ground-mount systems do not.
- How the power is used: load displacement. The building uses the power, and the system cannot have a net metering agreement.
- When to apply: before any purchase order or binding commitment.
Source: Save on Energy Retrofit program FAQ.
Federal
Clean Technology Investment Tax Credit
- Rate: up to 30% of the capital cost of new solar and storage equipment.
- Timing: 30% for property in use by the end of 2033; up to 15% in 2034; none after that.
- Who claims: businesses that file a corporate or trust tax return.
- Refundable: you get the credit even in a year with little or no tax to pay.
How We Help
We Do the Paperwork as Part of the Job
We turn your utility data into an indicative proposal, typically within one week, at our cost. We prepare the incentive and tax-credit applications as part of the job, so you see the economics before you commit capital.
Questions
How much is the Save on Energy solar incentive for a business?
Under the IESO Save on Energy Retrofit program, a solar system more than 10 kW AC, up to 1 MW AC gets $770 per kW AC (77¢/W AC). The incentive is capped at 50% of eligible project costs. The rate moved from 86¢/W on June 30, 2026. Information as at October 2026.
Can I combine the Save on Energy incentive with net metering?
No. A system funded by the Retrofit program cannot have a net metering agreement. It must run for load displacement, which means the building uses the power it makes, for the life of the system.
Does a ground-mount system qualify for Save on Energy?
No. The Save on Energy solar incentive covers rooftop and parking canopy (carport) systems only.
When do I apply?
Before you sign a purchase order or any other binding commitment. If a project starts before the application, it can lose the incentive or get a lower one. We prepare the application as part of the job.
Who can claim the federal Clean Technology tax credit?
The credit is for businesses that file a corporate or trust tax return, not for individual homeowners. It is up to 30% of the capital cost for property in use by the end of 2033, and up to 15% in 2034. Ask your accountant how it applies to your tax position.
Incentive and credit amounts are estimates subject to program rules, eligibility and approval, and to your corporation's tax position. Program parameters as at October 2026. General information, not tax or legal advice.
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