Energy efficiency program - Renewable energy

Solar preheating

Énergir is offering a grant to encourage the purchase and installation of a solar air preheating system for space heating. By preheating the air supply to a ventilation system, significant savings can be achieved on the consumption of natural gas needed to heat the fresh air. Highly efficient, a solar fresh air preheating system produces free and renewable energy and helps you reduce your greenhouse gas emissions.

Receive up to $200,000

The grant accorded by Énergir under this program may reach up to $200,000. Énergir will pay a grant of $2 per cubic metre of natural gas saved toward the purchase and installation of a solar collector connected to a natural gas ventilation system.

Eligible solar thermal collectors list (PDF)

Air Transat

In 2015, Air Transat installed a solar wall on its maintenance hangar located near the Montréal-Trudeau airport, thanks to a Solar Preheating Grant under Énergir’s Energy Efficiency Program – Renewable Energy. After four winters of use, this solar air preheating device has not only reduced the energy bill, it has also amortized the acquisition cost.

Read the full case study

How to get the grant?

To learn about the eligibility criteria, the method for calculating the grant, as well as the program implementation steps, consult the Participant’s Guide. There you will find all the information you need, such as: program description and objectives, amount of grants, eligibility criteria, program implementation steps, and forms to be completed.

Participant's guide

Savings to be had

If your company operates on extended hours and your preheated air requirements are high, the solar wall is an excellent solution for reducing your energy costs.

To maximize the savings that a solar wall will provide, it is important to orient the wall so that it captures as much sun as possible and is not shaded.


* Conditions apply. Requests for financial assistance for a solar preheating project must be submitted to Énergir before the work begins and accompanied by the EXPRESSION OF INTEREST (FORM 1). For all of the eligibility criteria for this program, see the participant's guide. Program subject to change without notice.