Solar Net-Metering Credit Calculator (Canada)

How the calculator works

The Solar Net-Metering Credit Calculator estimates the annual C$ value a Canadian residential PV system generates from self-consumption (avoided import at retail) and exports (credited at your province’s net-metering rate). It uses 2026 NRCan-typical generation factors and provincial retail rate averages.

Six inputs:

1. System size (kW) — Canadian residential average is 7.5 kW per Canadian Solar Industries Association 2025 data. The how many solar panels do I need calculator helps size for your bill first.
2. Peak sun hours/day — Calgary 4.5, Toronto 3.8, Montreal 3.6, Vancouver 3.0, Winnipeg 4.1, Halifax 3.7, Yellowknife 3.5 (CanmetENERGY’s PV Potential Atlas, south-facing tilt = latitude).
3. Annual usage (kWh) — NRCan Comprehensive Energy Use Database 2024: SK 11,700, AB 7,300, MB 11,400, ON 9,000, QC 23,500 (electric heating), NB 13,200, NS 10,300, BC 11,000, NL 12,400, PE 11,500.
4. Retail rate (C$/kWh) — Hydro-Québec Tier 2 12.3¢, BC Hydro Tier 2 14.6¢, Ontario TOU peak 18.2¢ off-peak 8.7¢ blended ~14¢, Alberta retail energy 11–14¢, Saskatchewan flat 17.5¢, Manitoba 11.1¢, Nova Scotia 17.8¢ (Hydro One/IESO/NSPI/etc Q1 2026).
5. Net-metering credit (C$/kWh) — set equal to retail in true 1:1 provinces (ON, BC, MB, SK, NB, NL); Alberta use retail energy only (~70% of full retail); Quebec use blended rate (with annual reset caveat).
6. Self-consumption (%) — 40–60% no battery, 75–90% with battery.

How the math works

annual_kWh_produced  = system_kW × peak_sun_hours × 365 × 0.77
self_consumed_kWh    = min(annual_use_kWh, annual_kWh_produced × self_pct/100)
exported_kWh         = annual_kWh_produced - self_consumed_kWh
self_consume_value   = self_consumed_kWh × retail_rate
nm_credit            = exported_kWh × net_metering_rate
total_annual_value   = self_consume_value + nm_credit

CanmetENERGY’s PV Potential and Solar Resource Maps support a similar 0.77–0.81 derating for southern Canadian residential arrays — winter snow cover and module temperature derating in summer offset each other.

Worked example: 7 kW system in Calgary on ENMAX MMS

• System: 7 kW DC, 4.5 PSH (Calgary CanmetENERGY), 0.77 PR
• Annual production: 7 × 4.5 × 365 × 0.77 = 8,853 kWh/yr (close to NRCan typical 9,000 for South Alberta)
• Annual use: 7,300 kWh, retail rate C$0.165 (ENMAX energy + delivery blended)
• ENMAX MMS credits at C$0.115 (energy portion only)
• Self-consumption 50% → 4,427 kWh × C$0.165 = C$731
• Exported: 8,853 − 4,427 = 4,426 kWh × C$0.115 = C$509
• Total annual value: C$1,240/yr

Same system in Toronto on Hydro One full 1:1 net metering:

• Production: 7 × 3.8 × 365 × 0.77 = 7,479 kWh/yr
• Retail rate C$0.142 blended TOU
• Self-consumption 50% → 3,740 × C$0.142 = C$531
• Exported: 3,740 × C$0.142 = C$531 (1:1 credit at retail)
• Total: C$1,062/yr

Same system in Vancouver:

• Production: 7 × 3.0 × 365 × 0.77 = 5,904 kWh/yr (lower PSH)
• BC Hydro Tier 2 C$0.146
• Total: C$862/yr

Higher Calgary production + MMS-discounted exports still beats Toronto thanks to 18% more annual generation. Vancouver’s coastal/cloudy climate is the biggest drag in Canada.

Province-by-province net-metering snapshot (Q2 2026)

Sources: Ontario Energy Board, BC Utilities Commission, Alberta Utilities Commission, SaskPower, Manitoba Hydro, Régie de l’énergie Quebec, NB Power, Nova Scotia Power, Maritime Electric, NL Hydro.

Federal Greener Homes Loan + provincial stacking

The federal Canada Greener Homes Loan (CGHL) provides interest-free financing up to C$40,000 over 10 years for energy-efficiency retrofits including residential solar PV. As of 2026 the program is open with reduced annual budget — apply early in the fiscal year (April 1) before allocations exhaust.

Provincial rebates that stack with CGHL:

• PEI Solar Electric Rebate — C$1.00/W (max C$10,000) for residential systems 1–10 kW.
• Nova Scotia SolarHomes — C$0.30/W (max C$3,000) for grid-tied residential.
• Yukon Good Energy Rebate — C$0.80/W (max C$5,000).
• NWT Arctic Energy Alliance — up to C$30,000 grant for diesel community offset.
• Saskatchewan Net Metering Rebate — closed 2022 but program review underway 2026.
• Greener Homes Loan + Local Improvement Charge (LIC) programs in Toronto, Halifax, Edmonton — repaid via property tax over 20 years.

The 2026 rebate environment is dramatically thinner than 2023 when the Canada Greener Homes Grant of C$5,000 was active. Plan accordingly — a typical 8 kW system at C$2.80–C$3.50/W gross installed cost = C$22,400–C$28,000, minus C$3,000 average provincial rebate, minus interest-free C$22,000 CGHL financing leaves about C$3,000 cash out at install.

Quebec’s unique winter heating offset

Hydro-Québec’s annual reset structure works in homeowners’ favour for electric-heated homes:

1. April–September: solar production exceeds consumption. Excess kWh banked.
2. October–March: electric baseboards/heat pumps draw 30,000+ kWh. Bank drawn down.
3. March 31 anniversary: any remaining bank balance — surplus or deficit — closes. Surplus credits forfeit; deficit paid as a normal bill.

A 10 kW system in Montreal producing 12,000 kWh/yr against a 25,000 kWh/yr electric-heated home consumes 100% of its production over the rolling year. The math works only if your annual production is ≤ your annual consumption. Over-sized arrays bleed value at the March 31 reset.

For non-electric-heated homes (Quebec gas-heated or oil-heated), the breakeven array size drops to about 4–6 kW. Quebec’s low retail rate (8–12¢/kWh) is the bottleneck; payback typically 15–18 years for residential solar despite generous net metering.

Sources

• Natural Resources Canada (NRCan), Photovoltaic Potential and Solar Resource Maps of Canada.
• CanmetENERGY, PVPotential database 2024.
• Provincial utility net-metering tariff sheets (Hydro-Québec D, BC Hydro 1289, ENMAX MMS, Hydro One Net Metering, etc.).
• Canadian Solar Industries Association, 2025 Annual Report.
• Canada Greener Homes Loan program documentation, NRCan March 2026.
• Statistics Canada Comprehensive Energy Use Database 2024.