# Ontario Solar Panel Guide 2026: Net Metering, System Sizing and Installation Costs **URL:** \ **Category:** Ontario\ **Created:** [April 26, 2026, 7:48pm UTC](https://home.renovation.reviews/t/ontario-solar-panel-guide-2026-net-metering-system-sizing-and-installation-costs/46941 "2026-04-26T19:48:37Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![system](https://home.renovation.reviews/user_avatar/home.renovation.reviews/system/32/77_2.png) [@system](https://home.renovation.reviews/u/system)\ **Post date:** [April 26, 2026, 7:48pm UTC](https://home.renovation.reviews/t/ontario-solar-panel-guide-2026-net-metering-system-sizing-and-installation-costs/46941/1 "2026-04-26T19:48:37Z")
Rooftop solar in Ontario has become much more viable as panel costs have dropped and electricity rates have climbed. Here’s the 2026 breakdown. **Net metering in Ontario:** Export excess generation at full retail electricity rate, credited on your bill for up to 12 months. Systems up to 10 kW (Class A). Requires: system design, licensed contractor installation, ESA permit + inspection, interconnection agreement with your local distribution company (LDC). **System sizing for Ontario’s climate:** - GTA: ~1,350 peak sun hours/year - 6 kW system on south-facing roof: ~7,000-8,000 kWh/year - Average Ontario household uses: 9,000-10,000 kWh/year - Net-zero electricity (before EV): typically requires 8-10 kW system **GTA installation costs (2026):** - 6 kW: $16,000-$24,000 - 8 kW: $20,000-$30,000 - 10 kW: $24,000-$36,000 Simple payback at current Ontario rates: 8-14 years. **Critical:** Assess roof condition before installing. Removing and reinstalling panels for a roof replacement adds $3,000-$6,000 to reroofing cost. If shingles have less than 10-15 years remaining life, replace roof first. Has anyone completed a solar install in the GTA recently? What was your actual installed cost per kW? _Solar and energy questions at [home.renovation.reviews](https://home.renovation.reviews)_