Frequently Asked Questions — Home Battery Storage & Solar in Ontario

There is no standard price. The cost of a home battery system depends on battery capacity, whether you add solar and how large the array is, the electrical work your home needs, and the site. An installer quotes after seeing the home. The Ontario HRSP rebate offers up to $5,000 for battery storage installed together with new solar, which can reduce what you pay. Payback depends on your usage, rate plan, rebates and price, so ask the installer for a site-specific estimate. Some installers also offer financing.

The $10,000 HRSP total combines two rebates: up to $5,000 for rooftop solar and up to $5,000 more for battery storage installed together with new solar. Rebates are capped and cannot exceed a share of the project cost. Solar can be installed on its own for the solar rebate, but the battery rebate is only available when the battery is paired with new solar under the same program — a standalone battery, or a battery added to an existing solar array, is not covered. Taking the solar rebate means giving up net metering for the life of the system, so ask the installer whether the rebate or net metering comes out ahead for your home. Check Save on Energy for the current amounts and rules before you rely on them.

Yes, if it is installed with backup capability. A battery set up for backup switches over automatically when the grid goes down and keeps the circuits you have chosen running — for example refrigeration, heating controls, lighting, medical equipment and communications. That matters in Muskoka and Simcoe County, where the March 2025 ice storm caused widespread outages. How long the backup lasts depends on your battery capacity and how much power you use.

On Ontario's ULO rate plan, a battery can charge overnight at 3.7¢/kWh and power your home during the 37.7¢/kWh weekday peak from 4 to 9 PM (Ontario Energy Board prices in effect November 1, 2026). How much that saves depends on how much electricity you use at peak, your rate plan and the size of the system. An installer can estimate the savings for your home from your hydro bills.

It can be, depending on the home. Solar panels work in Muskoka and Simcoe County, and cold weather doesn't stop them; they produce the most from spring through fall. Whether solar makes sense for you depends on your roof, shading, electricity use and the price you pay. The HRSP rebate of up to $5,000 for rooftop solar can reduce the cost, and an installer can estimate what a system would produce on your roof.

The Ultra-Low Overnight (ULO) rate plan is an Ontario electricity price plan that suits homes able to move their use to overnight hours, such as homes with battery storage or an electric vehicle. It has a 3.7¢/kWh overnight rate (11 PM–7 AM) and a 37.7¢/kWh on-peak rate (weekdays 4–9 PM), with mid-peak at 14.6¢/kWh and weekend off-peak at 9.1¢/kWh. A battery can charge overnight at the low rate and power the home during the expensive peak hours. You can switch to ULO through your local hydro utility.

It depends on the system and the site. A battery on its own is usually a shorter job than solar plus battery, and permits, inspections and utility paperwork add time before the system is switched on. Ask the installer for a timeline when you get your quote, including who handles the permits and utility paperwork.

No. A battery can be installed on its own and used for backup power and for shifting your use on Ontario's ULO rate plan — charging at 3.7¢/kWh overnight (11 PM–7 AM) and powering the home during on-peak hours at 37.7¢/kWh (4–9 PM weekdays). However, the HRSP battery rebate is only available when the battery is installed together with new solar under the same program — a standalone battery, or a battery added to an existing solar array, is not covered. To claim up to $10,000 combined (up to $5,000 for solar and up to $5,000 for the battery), both must be installed together as part of the same project.

The system normally stays with the property and transfers to the new owner. Some buyers value solar and battery backup, but how much it adds to a sale price is not certain, so don't count on recovering the cost when you sell. If you finance or lease the system, check what the agreement says about selling the home.

Some installers offer financing for battery storage and solar systems in Ontario, such as loans or leases. Ask the installer what they offer and compare the total cost of financing with paying upfront, after any HRSP rebate.