Ontario electricity bills change on May 1, 2026. How much more could households pay?
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Ontario households are set to enter a new summer billing structure for electricity starting May 1, 2026, a shift that could push monthly bills higher for many customers even though the per-kilowatt-hour rates themselves are not being raised again this spring. The Ontario Energy Board says the prices set on November 1, 2025 remain in effect through October 31, 2026, but the summer pricing structure begins on May 1 under both the Time-of-Use and Tiered plans.
For households on the Tiered plan, the lower-priced residential threshold drops from 1,000 kWh per month in winter to 600 kWh in summer, while the rates remain at 12.0 cents per kWh for Tier 1 and 14.2 cents for Tier 2. That means a home using 700 kWh a month would pay about $2.20 more on the electricity line alone, while the added amount rises to roughly $6.60 at 900 kWh and about $8.80 at 1,200 kWh, before taxes, delivery charges, and rebates.
Customers on the Time-of-Use plan will not see one fixed increase across the board, but they will move into the summer schedule that places the highest-priced on-peak period between 11 a.m. and 5 p.m. on weekdays. The morning 7 a.m. to 11 a.m. period and the evening 5 p.m. to 7 p.m. period shift to mid-peak, while evenings, nights, weekends, and holidays remain at the lower price. Homes that rely more heavily on air conditioning or major appliances around midday may therefore feel a sharper increase as warmer weather sets in.
Officials also note that the total impact will vary depending on how much electricity a household uses, which local utility serves it, and which price plan it has selected. The Ontario Electricity Rebate remains at 23.5 percent for eligible customers. The bottom line is that Ontario is not introducing a new May 1 rate hike in the usual sense, but the summer billing structure itself is likely to leave many households paying more if usage patterns stay the same.
