Dual-energy, an economic and ecological choice

Take advantage of replacement of your heating or air conditioning system to convert to dual-energy. You could benefit from major grants allowing you to cover a significant portion of the conversion costs and take advantage of savings linked to Hydro-Québec’s dual-energy rates1. You will also take an action that contributes to reduce greenhouse gas emissions.

IMPORTANT: the dual-energy offer is only available in the Greater Montréal area.

What is a dual-energy system

A dual-energy system is the combination of two energy sources to ensure your heating needs in your building. The system uses a fossil fuel (natural gas) to meet your heating needs during very cold weather (usually below –12 °C or –15 °C). When the temperature is not as cold, the electrical system takes over to heat your building. Everything is managed automatically by installing a smart thermostat and a temperature sensor. Hydro-Québec’s dual-register meter measures your consumption and allows you to benefit from the dual-energy rate, when you consume electricity outside cold periods.

Dual-Energy System

For hot water systems, dual-energy combines a natural gas boiler and an electric boiler.

Hot Water System BEFORE

Natural gas boiler and water heater


Hot Water System AFTER

Natural gas boiler combined with an electric boiler
Installation of an electric water heater to be evaluated according to the consumption of your building's occupants


Energir, Hydro-Québec and the Quebec government offer grants2 to help customers convert to dual-energy systems. These grants reduce the cost of purchasing and installing dual-energy equipment, helping customers reduce their greenhouse gas emissions and make significant savings.

Grant amounts are unique to each project and based on estimated project costs. Grants are calculated based on the equipment being installed and their power. They cover up to 80% of estimated project premium cost2 or up to $250,000 per site.

Ask Énergir about the terms and conditions.


Do you want to know more about our dual-energy offer?

Find out more from our customer service advisors. They will be able to answer your questions and guide you through the next steps.



A certified partner in your region will contact you as soon as possible.


This offer is only available in the Greater Montréal area

1 Ask Hydro-Québec about the dual-energy rate.

2 Certain conditions apply. Grant amounts vary depending on the power of the appliances installed and the work done to install them. Grant amounts cannot exceed 80% of the premium cost associated with the purchase and installation of the appliances. The premium cost for a project is the difference between the estimated cost of a project (the cost of purchasing and installing a dual-energy system) and the estimated baseline cost (the cost of purchasing and installing a natural gas appliance). Costs for electrical work may be added to the cost of purchasing and installing the equipment.
To take advantage of the grants, you must contact Énergir prior to installation.
The grant amounts and program terms and conditions are subject to change without notice.