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Generator hooked up to a house 

Safely connecting generators to your home

Generators supply an alternate power during emergencies. If they aren’t used safely, they can pose a serious risk to your family and utility workers. Generators produce carbon monoxide and the buildup of these fumes can be fatal. If connected incorrectly, they can also cause electrical shock or fires.

To help make connecting a generator to your home easier and safer, Toronto Hydro has recently approved the use of meter base plug-in transfer devices for use with our smart meters.  This device allows you to connect your portable generator safely to your home's wiring system through your smart meter.  If the power goes out, you’ll be able to run essential appliances and lighting in your home until the electricity is restored.  

Female connecting generator


Toronto Hydro teamed up with the Electrical Safety Authority to share generator safety tips 

Toronto Hydro caught up with Steve Smith, General Manager at the Electrical Safety Authority to provide homeowners with everything they need to know about connecting generators.

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Did you know?

You'll need to contact a licensed electrical contractor to provide an estimate for the device and the required electrical work, and ensure that the appropriate steps and inspections are done. For more information on where to purchase these devices, speak to your licensed electrical contractor. 

Approved Devices:

  • MA23-N   30 AMP Generlink - Non-Surge
  • MA24-N   40 AMP Generlink - Non-Surge
  • MA24-S   40 AMP Generlink with Whole House Surge Protection Built in
  • MA23-S   30 AMP Generlink with Whole House Surge Protection Built in

What you need to do to install a plug-in transfer device

Step 1: Contact our Customer Care and Billing department at 416-542-8000 (press 4).

  • We’ll book an inspection with a member of our team and dispatch an energy inspector to assess your home’s electrical equipment and ensure it’s compatible with the device
  • The representative may suggest some meter or electrical upgrades for your licensed electrical contractor that are needed prior to installation
  • These upgrades are required before installation and there may be charges associated with the upgrades

Step 2: Contact a licensed electrical contractor

  • The contractor will provide you with a quote on the costs associated with the necessary upgrades, installations and inspections and may source the approved plug-in transfer device for you.
  • Check out the ESA website to find a licensed electrical contractor in your area

Step 3: Book an appointment with us to have your power disconnected and your device installed

  • Only Toronto Hydro is authorized to disconnect and reconnect the power
  • There's an additional cost (approximately $400 - $800) for disconnecting and reconnecting power. This must be paid prior to booking the appointment. It may be included in the quote from your licensed electrical contractor so please make sure that you’re not paying this disconnection/reconnection charge twice
  • You’ll also need to sign an authorization form and a generator attachment agreement

Step 4: Installation of your device

  • Toronto Hydro will arrive to disconnect your power, and then your licensed electrical contractor can install the plug-in transfer device. Toronto Hydro employees are NOT authorized to install these devices
  • If you’ve had some electrical upgrades to your equipment, you may require an Electrical Safety Authority (ESA) inspection before your home is reconnected
  • Once the device is connected, Toronto Hydro will reconnect the power to your home