Thank you for helping to keep Ontario’s electricity reliable.

The peaksaver PLUS® program endED on December 31, 2017.

After 10 successful years, the peaksaver PLUS® program ended on December 31, 2017. Together with more than 315,000 participating homes and businesses across the province, you have played an important part in protecting the environment while keeping Ontario’s electricity reliable.

When you first signed up, a thermostat or electronic switch was installed to temporarily reduce the electricity used by your air conditioner, electric water heater or pool pump, on the hottest summer days when electricity demand was highest. With significant changes in smart thermostat technology and the evolution in demand response programs, peaksaver PLUS® ended on December 31, 2017.


Important Information

Illustration of a water heater

Water heater and pool pump participants

The peaksaver PLUS® load control switch installed on your electric water heater or pool pump will be disconnected remotely and will continue to operate normally.

Illustration of a central air conditioner

Central air conditioner participants with a programmable thermostat

The Honeywell programmable thermostat that was installed as part of the program is yours to keep so you can keep saving energy. Operational Guides are available below.

The online portal to manage your programmable thermostat remotely closed on December 31, 2017.

image of the Joule In-home Energy Display

Participants with an Energy Joule (In-Home-Display)

The In-Home-Display Energy Joule display will continue to be updated twice annually, November 1st and May 1st to align with time-of-use periods and rates. For more information, please find frequently asked questions for the Joule here.

Replacements, including parts, were available up until December 31, 2017.

Need help?

  1. Download thermostat operation manuals:

  2. Troubleshooting:
    Follow these tips to keep your thermostat operating smoothly and find help operating devices

If you require assistance 
please call 1-888-664-9376

Effective December 31, 2017, the peaksaver PLUS® program including maintenance services for peaksaver customers enrolled prior to 2011 and peaksaver PLUS® customers will end as a result of a public stakeholder engagement that was completed by the Independent Electricity System Operator (IESO) April 2016. Participating peaksaver PLUS® customers will not be included in any peak electricity load control events between May to September.

*If you fail to contact Hydro One Networks Inc. on or before December 20, 2017, you will assume full responsibility of the peaksaver PLUS® load control device. This means that you will assume full liability for the quality, safety and any damages, whether direct or indirect for the device after December 31, 2017. If you do not want to assume this responsibility and you fail to contact Hydro One Networks Inc. on or before December 20, 2017 for the removal of the device, you will be responsible for the removal of the device at your own cost.

After December 31, 2017, you will be assuming all responsibility and liability of the control device (programmable thermostat or electronic switch) even if Hydro One Networks Inc. is expressly advised of the possibility of such damages arising out of or in connection with the control device, including any loss to your property, personal injury or any other loss whether the action is in contract, tort or otherwise. This limitation of liability shall apply to the fullest extent permitted by law. Subject to additional terms and conditions contained in the
Participant Agreement.