⚡ Rate reference (verified for accuracy 2026-08-15):
- Standard Time-of-Use (TOU) plan — the default for most homes: on-peak 18.9¢/kWh, mid-peak 14.6¢/kWh, off-peak 9.1¢/kWh. Windows swap seasonally (summer on-peak 11 AM–5 PM weekdays; winter on-peak 7–11 AM + 5–7 PM weekdays; off-peak 7 PM–7 AM plus all weekends and holidays year-round).
- Ultra-Low Overnight (ULO) plan — opt-in alternative for homes with batteries or EVs: on-peak 37.7¢/kWh (4–9 PM weekdays), mid-peak 14.6¢/kWh, weekend off-peak 9.1¢/kWh, ultra-low overnight 3.7¢/kWh (11 PM–7 AM every day).
- Rates set by the Ontario Energy Board, in effect November 1, 2026. Source: oeb.ca. The Ontario Electricity Rebate (15.7% from November 1, 2026) reduces both rates on your bill.
Residents of Gravenhurst, Bracebridge, Huntsville, Barrie, Orillia, and Parry Sound can benefit greatly from understanding Hydro One's Time-of-Use (TOU) rates. As energy prices fluctuate throughout the day, knowing how these rates work can help you lower your bills. With the rising popularity of solar energy and battery storage systems, homeowners in Muskoka can not only optimize their energy usage but also gain financial incentives through rebates. This article will guide you through maximizing Hydro One TOU savings in Gravenhurst and surrounding towns.
Understanding Hydro One TOU Rates
Hydro One's TOU pricing structure consists of three main rate periods: peak, mid-peak, and off-peak. Standard TOU rates are 18.9¢/kWh on-peak, 14.6¢/kWh mid-peak, and 9.1¢/kWh off-peak, with windows that swap between summer and winter. The Ultra-Low Overnight (ULO) plan — an opt-in alternative for homes with batteries — is charged at 37.7¢/kWh on-peak (4-9 PM weekdays), 14.6¢/kWh mid-peak, 9.1¢/kWh weekend off-peak, and 3.7¢/kWh overnight (11 PM-7 AM every day).
For residents of Gravenhurst, understanding these rates can mean the difference between a hefty utility bill and a more manageable one. By shifting heavy energy consumption tasks—such as running dishwashers or doing laundry—to off-peak times, you can lower your monthly costs. This is especially relevant for homeowners who are considering solar panel installations, as these systems can reduce what you buy from the grid by generating power during the day.
Benefits of Solar Power in Gravenhurst
Installing solar panels in Gravenhurst not only helps in reducing reliance on the grid but also allows homeowners to take advantage of the HRSP solar rebate program. The program offers up to $5,000 for rooftop solar. Rebates are capped and cannot exceed a share of the project cost. 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.
With solar panels, homeowners can generate some of their own electricity and buy less at peak TOU rates. A battery installed together with the new solar can qualify for up to $5,000 more under the HRSP. This combination is particularly beneficial for those in Gravenhurst who want to store energy generated during the day for use during peak evening hours.
Battery Storage Solutions for Muskoka Homes
Battery storage solutions are becoming increasingly popular in areas like Bracebridge, Huntsville, and Gravenhurst. These systems allow homeowners to store excess energy generated from their solar panels for later use, particularly during peak times when rates are highest. Notably, the battery must be paired with a new solar installation to qualify for the HRSP rebate, emphasizing the importance of integrating both technologies.
The two rebates together come to up to $10,000. Check Save on Energy for the current amounts and rules before you rely on them. Whether the system pays off for you depends on your usage, your rate plan, the rebates and the installed price, so ask the installer for a site-specific estimate. These systems can also reduce a home's carbon footprint.
Calculating Your Potential Savings
To understand how much you can save with Hydro One TOU rates in Gravenhurst, it’s important to analyze your energy consumption patterns. By creating a simple comparison of costs based on TOU rates, homeowners can identify when they are spending the most on energy and adjust their habits accordingly.
| Usage Category | Cost at ULO on-peak (37.7¢/kWh) | Cost at ULO overnight (3.7¢/kWh) |
|---|---|---|
| 10 kWh | $3.77 | $0.37 |
| 50 kWh | $18.85 | $1.85 |
| 100 kWh | $37.70 | $3.70 |
The table prices the same amount of electricity at the two ULO rates. It covers the electricity price only, not delivery charges or the cost of any equipment. On the Ultra-Low Overnight (ULO) plan a battery can charge overnight at 3.7¢ and power the home during the 37.7¢ weekday peak. How much that saves depends on how much you use at peak, your rate plan and the system size.
Connecting with Local Installers
For homeowners in Gravenhurst, Huntsville, and Bracebridge looking to explore solar and battery options, connecting with local installers is crucial. These professionals can provide tailored advice on the best systems for your home and help you navigate the HRSP rebate application process. A local installer can also size the system to suit your home.
Whether you are ready to install solar panels or just beginning to explore your options, local installers can assist you every step of the way. They understand the unique energy needs of Muskoka and Simcoe County residents and can guide you to the most beneficial solutions.
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Request Your Assessment →Frequently Asked Questions
Standard Hydro One TOU rates are 18.9¢/kWh on-peak, 14.6¢/kWh mid-peak, and 9.1¢/kWh off-peak. The 37.7¢ / 3.7¢ figures apply to the separate opt-in Ultra-Low Overnight (ULO) plan.
Solar energy systems can help reduce your reliance on the grid, allowing you to generate your own electricity during the day and save on high peak rates by using stored energy at night.
The HRSP offers up to $5,000 for rooftop solar and up to $5,000 more for a battery installed together with new solar, up to $10,000 combined. Standalone batteries and batteries added to existing solar are not covered. Check Save on Energy for the current amounts and rules before you rely on them.
Program rules set out what has to happen before installation. Check Save on Energy for the current steps, and confirm them with the installer before you sign a contract or start work.
You can send an enquiry through this site. It goes to one independent local installer, who can give advice and a quote for your home.