Which Ontario rate plan is cheapest?

It depends on when you use power. Time-of-Use suits most homes. Ultra-Low Overnight wins when you can shift a lot of use to 11 pm–7 am, like charging an EV, and avoid 4–9 pm on weekdays. Tiered suits homes that use little power or a lot during weekday peaks.

Can I switch plans if I have solar?

Ontario customers on the Regulated Price Plan can choose Time-of-Use, Ultra-Low Overnight or Tiered. If you have solar on net metering, ask your utility how your arrangement affects switching before you change.

Does a battery make ULO worthwhile?

Often. A battery can charge overnight at 3.7¢ and run your home through the 37.7¢ weekday evening peak. Whether it pays back depends on its cost, any rebate and your evening use.

Ontario · prices from Nov 1, 2026

Which Ontario rate plan pays best with solar?

Compare Time-of-Use, Ultra-Low Overnight and Tiered for your bill, with or without solar and a home battery. Uses the same engine as our full calculator.

Time-of-Use

$57

average per month after

Without solar or battery: $180/mo
Saves in year one: $1,471
System: 7.3 kW
Pays back in: 11.9 years

Ultra-Low Overnight

$57

average per month after

Without solar or battery: $213/mo
Saves in year one: $1,866
System: 9.0 kW
Pays back in: 11.6 years

Tiered

Lowest

$56

average per month after

Without solar or battery: $176/mo
Saves in year one: $1,449
System: 9.0 kW
Pays back in: 15.6 years

A typical household’s daily pattern, the OEB prices from November 1, 2026, and this utility’s approximate delivery charges. Solar is sized for best payback on each plan; batteries charge from solar and, on Ultra-Low Overnight, from cheap overnight power. Your habits (an EV charging overnight, working from home) can change the winner.

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The three plans in brief

Time-of-Use: 9.1¢ off-peak, 14.6¢ mid-peak and 18.9¢ on-peak. Ultra-Low Overnight: 3.7¢ overnight, 37.7¢ weekdays 4–9 pm. Tiered: 11.2¢, then 13.2¢ above a monthly threshold. Read the full guide to Ontario rate plans.

Which Ontario rate plan is cheapest?: It depends on when you use power. Time-of-Use suits most homes. Ultra-Low Overnight wins when you can shift a lot of use to 11 pm–7 am, like charging an EV, and avoid 4–9 pm on weekdays. Tiered suits homes that use little power or a lot during weekday peaks.
Can I switch plans if I have solar?: Ontario customers on the Regulated Price Plan can choose Time-of-Use, Ultra-Low Overnight or Tiered. If you have solar on net metering, ask your utility how your arrangement affects switching before you change.
Does a battery make ULO worthwhile?: Often. A battery can charge overnight at 3.7¢ and run your home through the 37.7¢ weekday evening peak. Whether it pays back depends on its cost, any rebate and your evening use.