Solar Installers in London, ON
Compare 5+ vetted London solar companies side by side, read real customer reviews, and get up to three free quotes for your home. A typical 7.5 kW system runs about $21,870 installed and pays back in roughly 18.8 years.
Top 5 Installers in London
Ranked by verified reviews and local performance data.
Certified solar installation professionals offering competitive pricing and verified workmanship.
Certified solar installation professionals offering competitive pricing and verified workmanship.
Certified solar installation professionals offering competitive pricing and verified workmanship.
Certified solar installation professionals offering competitive pricing and verified workmanship.
Certified solar installation professionals offering competitive pricing and verified workmanship.
Solar Potential & Climate in London
London gets roughly 1,200 kWh of production per kW installed each year — that's the number your installer will use to size your system. Solar panels are more efficient in cold weather than in summer heat, so London's clear winter days actually produce more per hour than the same conditions in July. Snow slides off panels tilted 30° or steeper within a day or two of accumulation, and the reflected light off surrounding snowpack (the "albedo effect") can add 5–10% to daily generation. Cloudy West Coast winters or long overcast stretches on the Prairies do drag the annual number down — but the summer surplus more than covers it under net metering.
Utility Interconnection & Net Metering
London homeowners fall under Ontario's net metering regulation. Your local distribution company — Hydro One, Toronto Hydro, Alectra, Elexicon, or Hydro Ottawa depending on where you live — installs a bidirectional meter that measures both what you draw from the grid and what your panels export. Every exported kWh credits your bill at the full retail rate, and unused credits roll forward for 12 months. Most well-sized London systems bank credit through the summer and draw it down over the winter, ending the year close to a zero-dollar electricity bill.
Local Solar Incentives & Grants
The federal Greener Homes Loan (interest-free, up to $40,000, 10-year term) is the main national program still active for residential solar. On top of that, Ontario has its own patchwork of provincial rebates, PST exemptions, and municipal financing programs — we've broken them all down on our Ontario rebate page. Programs run out of funding periodically, so always confirm with your installer that whatever incentive they're quoting is currently open before you sign.
Installer Map — London
We've mapped every certified installer serving London and the surrounding area. Darker clusters indicate higher competition and potentially better pricing.
How Much Do Solar Panels Cost in London?
Prices below reflect the Ontario average of $2.92/W installed for a Tier 1 panel-plus-string-inverter build, 500 W panels, professional roof mount. Actual quotes vary with roof complexity, electrical panel upgrades, and whether you add a battery. The percentages show how much of a typical 9,000 kWh/yr Canadian household bill each system covers.
| System Size | Installed Cost | Yearly Savings | Payback |
|---|---|---|---|
5 kW Small home / condo, low bill under $100/mo | $14,580 | $776 | 18.8 yrs |
8 kW Typical 3-bed home, bill $100–$180/mo | $23,328 | $1,241 | 18.8 yrs |
10 kW Larger home, gas heat, bill $180–$250/mo | $29,160 | $1,551 | 18.8 yrs |
12 kW Big home with a pool or hot tub, $250+/mo | $34,992 | $1,861 | 18.8 yrs |
15 kW EV + heat pump household, or net-zero target | $43,740 | $2,327 | 18.8 yrs |
How these numbers are calculated: System production uses PVGIS-modelled irradiance for London (1,200 kWh per kW installed per year). Savings assume 65% self-consumption at 14.5¢/kWh retail and 10.0¢/kWh for exports back to the grid. Payback is simple (no rate inflation) — over the 25-year system life at 3% annual rate inflation, real savings on a 7.5 kW system total roughly $39,648.
Solar Rebates for London Homeowners
Ontario homeowners can typically stack federal, provincial, and municipal programs. Below are the current programs we track — always confirm with your installer that funding is still active when you sign a contract, since program budgets often run out mid-year.
Toronto HELP Program
Toronto homeowners can access low-interest financing for solar panels and pay it back over time through their property tax bill.
Clean Energy Improvement Program (CEIP)
Property Assessed Clean Energy (PACE) style financing available in select Ontario municipalities, linking the loan to the property, not the owner.
Other Cities in Ontario
Comparing quotes across nearby cities can be worthwhile — installers often serve a 60–100 km radius and pricing can vary by 10–15%.
Solar FAQs for London
Everything you need to know about purchasing residential solar in London.
QHow much do solar panels cost in London?
A right-sized system for the typical London home — about 7.5 kW — costs roughly $21,870 installed before any rebates. Smaller 5 kW setups run closer to $14,580 and larger 12 kW systems land near $34,992. Final pricing depends on roof complexity, electrical panel condition, and whether you add a battery.
QWhat's the payback period for solar in London?
At Hydro One / Toronto Hydro's current residential rate of about 14.5¢/kWh, a 7.5 kW system pays itself back in roughly 18.8 years. After that, you're generating free electricity for another 15–20 years on the same equipment.
QAre there rebates or tax credits for solar in London?
Ontario homeowners can stack any provincial or municipal incentives on top of the federal picture. Programs change year to year, so we list what's currently active on our Ontario rebate page — always confirm with your installer that the incentive is still funded when you sign.
QDo solar panels work through London winters?
Yes — and better than most people expect. Panels convert light, not heat, so cold days with clear skies are among the best producers of the year. Snow slides off tilted panels quickly, and the surrounding snowpack actually reflects extra sunlight back onto the array (called the albedo effect). Winter months produce less than summer, but net metering credits from June–August cover the shortfall.
QHow long does a solar installation take in London?
The physical install is usually one to two days on the roof. From signed contract to fully commissioned and net-metered, expect 4 to 10 weeks — most of that is permit review, Hydro One / Toronto Hydro's interconnection paperwork, and the final safety inspection.
QDo I need to replace my roof before installing solar in London?
If your asphalt shingles are 15+ years old or nearing end of life, do the roof first. Removing and reinstalling panels later costs $2,000–$4,000, so it's cheaper to align both projects. If your roof has 10+ good years left, you're fine to proceed — most solar installers will inspect the deck before signing off.
QShould I add a battery to my London solar system?
Batteries make sense in two cases: you want backup power during outages, or Hydro One / Toronto Hydro's export rate is low enough that storing your own solar is more valuable than selling it back. In Ontario, the export rate is about 10.0¢/kWh vs the 14.5¢/kWh you pay for grid power — the gap tells you whether a battery pencils out.
QWhat size solar system do I need in London?
Match system size to your annual kWh usage. Look at 12 months of Hydro One / Toronto Hydro bills, add them up, then divide by 1200 (kWh per kW installed in Ontario). A typical London home lands at 7.5 kW. Add 1–2 kW if you're planning an EV or heat pump.
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