Open · since April 1, 2026Énergir business dual energy · Updated September 23, 2026

Énergir dual-energy grant for businesses: up to 80% of the extra cost covered

Stores, institutions and buildings of 20 units or more heated with natural gas: Énergir, Hydro-Québec and the Government of Québec cover up to 80% of the gap between a dual-energy system and an all-gas replacement. Electricity heats most of the time; gas takes over in extreme cold.

80 %of the dual-energy extra cost
compared with all-gas
$250,000per application and per site
simplified path
$6Mper site, custom path
with an OIQ engineer
30 daysto file, after the first invoice
48 monthsto complete, after confirmation
10 yearson the dual-energy rate, minimum
$0to adapt Hydro-Québec’s grid
01 · How it works

Electricity heats almost all winter. Gas only kicks in during extreme cold.

Bring the thermometer down: below your region’s threshold, the gas burner takes over from the heat pump. That is the “right energy at the right time”: less gas, fewer GHGs, and an electricity rate designed for it.

Diagram of a commercial building on dual energyA hybrid rooftop unit gets electricity through a dedicated Hydro-Québec meter and natural gas through the Énergir meter. Above the -12 °C or -15 °C threshold, the heat pump heats; below it, the gas burner takes over.HQHybrid rooftop unitGASElectricity · HQGas · Énergir
Outdoor temperature

Hydro-Québec: above the threshold, the system must run on electricity. The climate zone is set by Hydro-Québec.

≈ 70%of gas heating moved to hydroelectricity, according to Énergir.
Oct. 1 → Apr. 30Hydro-Québec dual-energy rate season; the rest of the year, base rate G, M or G9. See the rate
1 meterseparate, dedicated to the dual-energy system, required by Hydro-Québec.
The year on the dual-energy rateGradient: dual-energy rate (October 1 to April 30). Grey: base rate prices.
02 · Which program

Three answers, and we name the right program

The type of building and the heating fuel decide everything. The existing system decides who does the work.

1 · Your building
2 · Today’s heating
3 · The system

03 · Estimator

Your grant, calculated the way Énergir calculates it

80% of the gap between your dual-energy project and an all-gas replacement, up to your path’s cap. Enter the amounts from your quotes, before taxes: the starting values are only an example.

1 · Your path
2 · Your amounts (before taxes)
Purchase and installation of electric or hybrid units, panel, dedicated meter, mast, rooftop transition base.
What the same replacement would cost without dual energy (baseline scenario).
Figure from Énergir’s form, calculated by the engineer over the 10-year commitment period.
The per-site cap counts every application made at the same address.
All-gas baselineGrantYour share of the extra cost

Indicative estimate. Énergir calculates the grant on your estimated costs and may adjust or refuse it if the GHG reductions are not consistent (guide, June 18, 2026 revision). Internal costs are not eligible on the simplified path.

04 · Official examples

From a small shop to a long-term care home: what dual energy pays on paper

Amounts published by Énergir for four types of buildings. The dotted line marks $250,000: above it, it is the custom path.

Potential annual savings

For information only, according to Énergir, Énergir and Hydro-Québec rates of October 2025. GHGs avoided: about 5.4 t (retail), 10.8 t (office), 53.8 t (school) and 229.3 t (hospital) per year.

Key point: the two rooftop-unit cases ($20,556 and $39,151) are AirGreen’s territory. Hydronic cases need a 15.4 partner for the hot-water loop. Énergir shows grants and savings in separate tabs: they are examples, not calculations derived from each other.

05 · Simplified or custom

Two paths: the right one mostly depends on one number

Above $250,000 of targeted grant, or if your equipment does not fit the simplified path, it is the custom path.

Does your 80% of the extra cost exceed $250,000?
Do your equipment or expenses fall outside the simplified path (large building, complex project)?
Is an OIQ engineer already hired for the project?
Your path

    Simplified pathCustom path
    Calculation80% × (project cost − baseline cost)Same calculation, recalculated on actual costs
    Cap$250,000 per application and per siteThe lowest of $250/t CO2e over 10 years, $3M per application, $6M per site
    The 30-day clock starts atThe first project invoiceThe first purchase order
    OIQ engineerNot requiredSigned project plan and commissioning report
    Dual-energy contractSigned before installationReceived with the acceptance email, returned signed
    Internal costsNot eligibleNot excluded by the guide: confirm with Énergir
    06 · Timeline and planner

    Two dates can cost you the grant: the contract and day 30

    Sign before installing, file within 30 days. Enter your dates: the whole timeline is calculated from today.

    1. 01FirstQuote and preliminary calculationA professional assesses your gas units and prices the dual-energy scenario.
    2. 02Before installationDual-energy contract signedWith your Énergir sales representative or partner. No contract, no grant.
    3. 0330 daysFile submittedNo later than 30 days after the first project invoice (custom: the first purchase order).
    4. 0448 monthsWork completedDeadline after Énergir confirms the grant, plus up to 12 months in exceptional circumstances.
    5. 05CommissioningCertificate to the distributorThe professional in charge sends the compliance certificate. Hydro-Québec adapts its grid at no cost if needed.
    6. 0612 months · 10 yearsInspection and rateInspection possible for 12 months. Dual-energy rate for at least 10 years.

    Good to know: the guide counts 30 days from the first invoice related to the project; Énergir’s web page mentions the installation invoice. Aim for the earlier date. Work already completed before filing is not eligible.

    07 · Who does what

    Pick your equipment: we tell you who handles what

    Dual energy mixes electricity and gas. Licences do not mix: the guide requires contractors registered with the REQ and holding the RBQ licences that match the work.

    AirGreen · RBQ 15.8, 15.10, 16
        Good to know

        TaskAirGreenLicensed partnerOthers
        Heat pump, rooftop unit, VRFYes · 15.8, 15.10
        Panel, dedicated meter, mast, transformerYes · 16 (CMEQ)Hydro-Québec: grid and meter
        Gas connection, burner, furnaceNo15.1 / 15.2
        Boiler, hot-water loopElectrical only15.4
        Project plan, commissioning (custom)Spec sheets and technical dataOIQ engineer
        Dual-energy contract, paymentÉnergir (representative or partner)

        AirGreen is not a certified Énergir partner. You sign your dual-energy contract with your Énergir sales representative or one of its partners; AirGreen provides the quote, spec sheets and technical documents for its part of the work.

        08 · Eligibility and documents

        Six questions, and you know whether your building qualifies

        Every blocking answer is explained right away. Then check off the documents for your file.

        01Are you an Énergir customer, with a building heated by natural gas for at least 12 months?
        02Is the building commercial, institutional, or residential with 20 units or more?
        03Is the building outside an industrial site?
        04Is the building already heated by electricity or dual energy?
        05Will you sign the dual-energy contract before installation?
        06Do you accept the dual-energy rate for at least 10 years?
        09 · Which program, in one table

        Your current energy picks the program for you

        Three programs for commercial, institutional and multi-unit buildings. They do not replace each other: they target different starting points.

        Énergir dual energySolutions efficaces (Hydro-Québec)ÉcoPerformance · oil, propane
        Starting pointÉnergir natural gas heating, kept as backupBuilding supplied by Hydro-Québec on a business rate: efficient electric measuresOil or propane heating, replaced
        What is paid80% of the dual-energy extra cost vs all-gasAmount per measure (OSE 6.0 tool); up to 90% for small businessesUp to 75% of eligible costs
        Cap$250,000 per site (simplified) · $6M per site (custom)$5M per project; customer contribution of at least 25% (medium and large)$100,000 per measure · $250,000 per site per year
        When to fileContract before installation; file within 30 daysSimplified offer: after installation · custom: before the workBefore the work (invoices 30 days old or less accepted)
        EngineerCustom path only (OIQ)Custom: signed report if requiredNone mentioned: form, photos, invoices
        CommitmentDual-energy rate for 10 yearsMeasure kept for 5 yearsMeasure kept for 10 years

        Stacking: Énergir refuses aid from organizations other than Énergir, Hydro-Québec and the Government of Québec. Solutions efficaces excludes heat pumps submitted to the dual-energy stream: do not submit the same heat pumps to both. Get Hydro-Québec to confirm (1 800 463-9900).

        10 · Videos

        Two Énergir videos to see dual energy in action

        Published by Énergir on its official channel. They only load when you press play.

        Dual energy: a winning energy duo (in French)

        The principle of electricity-natural gas dual energy, explained by Énergir.

        Webinar: hybrid rooftop unit (in French)

        Énergir information session of November 25, 2025 on replacing end-of-life gas rooftop units.

        11 · The pitfalls

        Six ways to lose a grant you already counted on

        BeforeInstalling, then signingThe dual-energy contract is signed before installation. The other way round, there is no grant.
        30 dLetting the first invoice slideThe file must be submitted no later than 30 days after the first invoice (or first purchase order).
        Submitting the same heat pump twiceSolutions efficaces excludes heat pumps submitted to the dual-energy stream.
        SiteForgetting the industrial siteAn office on a plant’s grounds is excluded, even if it is heated with gas.
        10 yrsLeaving the rate too earlyThe dual-energy rate commitment is at least 10 years; an inspection may follow for 12 months.
        GasGiving the gas work to the wrong tradeThe gas connection and hot-water loop require licences 15.1, 15.2 or 15.4.
        12 · Frequently asked questions

        The questions we get before you sign

        What is dual energy?

        Two energies heating the same building: electricity most of the time, and natural gas as backup in extreme cold, from -12 °C or -15 °C depending on the region. Énergir estimates that about 70% of gas heating moves to hydroelectricity this way: the right energy at the right time.

        Who is eligible for business dual energy?

        Énergir business customers in the commercial, institutional or multi-unit sector (20 units or more), heated with natural gas by a central forced-air or hot-water system. The building must have been heated with gas for at least 12 months. Buildings already heated by electricity or dual energy, and buildings on an industrial site, are excluded.

        How much does Énergir pay?

        Up to 80% of the extra cost: the difference between the estimated cost of the dual-energy project and the estimated cost of an all-gas replacement. Simplified path: up to $250,000 per application and per site. Custom path, with an OIQ engineer: up to the lowest of $250 per tonne of CO2e avoided over 10 years, $3M per application and $6M per site.

        Does AirGreen need to be an Énergir partner?

        Not to do the work. To get the grants, you sign a dual-energy contract with your Énergir sales representative or one of its partners, before installation. AirGreen is not a certified Énergir partner: it provides the quote, the spec sheets and the documents for its part of the work.

        My building has 12 units. Is it eligible?

        Not under this stream, unless it is mixed-use with commercial space heated by gas. From 4 to 19 units, it is Énergir’s residential stream, with its own amounts: see our residential dual-energy page.

        Can I combine it with Hydro-Québec’s Solutions efficaces?

        Not for the same heat pumps: Solutions efficaces excludes those submitted to the dual-energy stream. Énergir, for its part, refuses aid from organizations other than Énergir, Hydro-Québec and the Government of Québec. Get Hydro-Québec to confirm (1 800 463-9900) before filing.

        Who pays to adapt the power grid?

        Hydro-Québec, at no cost to you, if its distribution grid needs adapting. The work inside your building (new panel, dedicated meter, mast) is an eligible expense when it serves the switch to dual energy.

        What electricity rate will I pay?

        Hydro-Québec’s small and medium power dual-energy rate for space heating, from October 1 to April 30. From May 1 to September 30, prices are those of the base rate (G, M or G9). A separate meter is required and the commitment is at least 10 years. Gas stays at your usual rate.

        Is a hot-water system eligible?

        Yes: four of the six examples published by Énergir are hydronic. The hot-water loop (electric boiler, air-to-water heat pump) is the work of a contractor holding RBQ subclass 15.4; AirGreen does the electrical work.

        What about new construction?

        Yes, with conditions: the building must have access to Énergir’s network and be about to be connected. An expansion or a major renovation may also qualify. Talk to an Énergir representative.

        My building is heated with oil or propane.

        This is not the program: Énergir’s dual energy only converts natural gas. The ÉcoPerformance “oil or propane conversion” stream pays up to 75% of eligible costs, with an application filed before the work (1 866 266-0008).

        How long do I have to complete the work?

        48 months after Énergir confirms the grant, plus up to 12 months in exceptional circumstances. Careful: the file must be submitted no later than 30 days after the first invoice (or the first purchase order on the custom path).

        What happens after installation?

        The professional in charge sends the compliance certificate to the electricity distributor. Énergir may then inspect for 12 months: if the system is not installed or configured as required, the grant must be repaid immediately.

        Why also call Énergir?

        Conditions and amounts can change without notice. Énergir has a team that answers business dual-energy questions at 1 833 835-1313. On our side, we check the guide version in force before every quote.

        I heat my house with gas. Which page should I read?

        Énergir’s residential stream, with Hydro-Québec’s Rate DT and its own amounts for houses, duplexes and triplexes: see our residential dual-energy page.

        AirGreen · Commercial and multi-unit

        The heat pump, the electrical work and the technical file: we handle it

        AirGreen installs the electric side of your dual energy: rooftop units, central and ducted heat pumps, VRF systems, panel and dedicated meter. Gas and hydronic work go through a licensed partner, and you sign your dual-energy contract with Énergir before installation. It is all written in the quote. Everywhere in Greater Montréal, Laval, Longueuil, the South Shore and the North Shore.

        RBQ 5645-9605-01Subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity (CMEQ).
        Free on-site estimateWe survey your gas units, your panel and your roof before pricing.
        Quote within 24 hItemized, for your dual-energy file.
        Gas and hydronic: licensed partnerWork under 15.1, 15.2 and 15.4 done by a contractor who holds those licences.

        Criteria can change several times a year: also call Énergir directly at 1 833 835-1313 for the very latest information, or see Énergir’s business dual-energy page. On our side, we check the guide version in force before every quote.

        Sources checked on September 23, 2026.
        1. Énergir, Participant’s Guide – Electricity-Natural Gas Dual-Energy Program, in force April 1, 2026, revised June 18, 2026 (Commercial and Institutional stream).
        2. Énergir, “Dual energy for business”, energir.com/en/business/dual-energy, documentation filed April 1, 2026: grant examples; savings at October 2025 rates, for information only; “Rooftop unit” page and official Énergir videos.
        3. Government of Québec, news release of April 10, 2026 on dual-energy investments ($163.4M; Énergir program in force since April 1, 2026).
        4. Government of Québec, ÉcoPerformance: “Conversion of natural gas heating to dual energy”, updated July 7, 2026; “Convert oil or propane heating”, updated July 27, 2026.
        5. Hydro-Québec, “Dual-Energy Rate for Space Heating” (small and medium power) and “Dual-energy offer” (business).
        6. Hydro-Québec, Solutions efficaces, Participant’s Guide – Medium and Large Businesses, March 2026.

        Amounts shown are estimates; only the responsible organizations confirm the grant awarded.