Ontario Solar Calculator: Which Path Saves You More?

The Home Renovation Savings Program (HRSP) offers Ontario homeowners up to $10,000 in rebates for installing solar panels and battery storage. The rebate is split: up to $5,000 for the solar panel system and up to $5,000 for battery storage. To qualify, you must install both solar panels and a battery, and the system cannot export electricity to the grid - all power must be used on-site or stored in the battery.

No, these two programs are mutually exclusive. If you take the HRSP rebate, your system cannot export power to the grid, so Net Metering does not apply. If you choose Net Metering, you can send excess electricity back to the grid for credits on your bill, but you won't receive the HRSP rebate. This is why comparing the two paths with your specific data is so important - the better option depends on your electricity usage, system size, and local solar conditions.

The average cost of solar panels in Ontario in 2026 is approximately $2.85 per watt, fully installed. For a typical 8 kW residential system, that works out to about $22,800 before any rebates. Battery storage adds approximately $12,000 for a 10 kWh unit. Prices vary by installer, roof complexity, and equipment brand, so getting multiple quotes is recommended.

The payback period for solar panels in Ontario typically ranges from 8 to 14 years depending on your electricity consumption, rate plan, system size, and whether you choose the HRSP rebate or Net Metering path. Homes with higher electricity bills see faster payback. With the HRSP rebate and battery, the upfront cost is lower but savings per year may also be lower. With Net Metering, the upfront cost is higher but annual savings can be greater. Use the calculator above to see your personalized payback estimate.

Under Ontario's Net Metering program, your solar panels can send excess electricity back to the grid. Your utility gives you credits for each kilowatt-hour exported, which offset future electricity consumption. However, these credits only cover the commodity portion of your bill - they do not offset delivery charges (about 4.5 cents/kWh) or the fixed monthly service charges (about $45/month). Credits roll over month to month but expire after 12 months.

It depends on which path you choose. If you go with the HRSP rebate, a battery is required - the program mandates that all solar energy is used on-site. The $5,000 battery rebate helps offset the cost. If you choose Net Metering, a battery is optional since the grid effectively acts as your storage. Without the HRSP rebate, a battery typically adds cost without proportional savings benefit, since you can already bank your excess with Net Metering credits. However, a battery does provide backup power during outages.

This tool provides estimates based on average solar irradiance data for Ontario cities, current 2026 OEB-approved electricity rates, and typical system costs. Actual results will vary based on your specific roof conditions (shading, angle, age), your installer's pricing, exact energy usage patterns, and future electricity rate changes. We use a 4% annual electricity price increase (based on Ontario's historical trend) and 0.5% annual panel degradation, plus a 75% system efficiency factor to account for real-world losses (inverter, wiring, temperature, shading). For a precise quote, we recommend getting assessments from multiple local installers.