Solar Panel Cost Calculator London, ON
See what a solar system costs installed in London, sized from your power bill. Free, instant, no sign-up.
Updated · installer rankings recalculated
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| System | Installed cost |
|---|
Envisionmatrix Solar
4.8 · 24 reviews · Free quote
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Voltloop
5.0 · 19 reviews · Free quote
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The Solar Store
5.0 · 3 reviews · Free quote
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An estimate, not a quote. Based on $2.42–$3.05 per watt installed in Ontario (CAD) and 1,170 kWh per kW a year in Ontario. Installers confirm the final price after a roof check.
Top-rated solar panel companies in London
Ranked by TrustAnalytica from verified reviews · see the full Top 10 list →
Envisionmatrix Solar
Envisionmatrix Solar offers customized solar power systems with a focus on transparent communication and thorough site evaluation. Their team handles everything from design and installation to managing permits and net metering paperwork. Customers appreciate their patience, clear explanations, and smooth installations, though some delays with external inspections have occurred.
Voltloop
Voltloop specializes in providing reliable, top-brand batteries with a focus on affordable pricing and fast service. Their team helps customers find the right battery or charger, often offering same-day pickup and nationwide shipping. Customers appreciate the knowledgeable staff and smooth online ordering, though delivery delays have occurred occasionally.
The Solar Store
Solar Store, a fully-service, BBB certified Solar PV contractor and supplier, is an EPC (Engineering Procurement and Construction). Our company is one of the largest solar companies in Canada. We were also the first to be certified as installers for the MicroFIT and FIT incentives programs. Green Power Promotions was established in 2001 as a means to promote the exploration and development of… more...
Solar Store, a fully-service, BBB certified Solar PV contractor and supplier, is an EPC (Engineering Procurement and Construction). Our company is one of the largest solar companies in Canada. We were also the first to be certified as installers for the MicroFIT and FIT incentives programs. Green Power Promotions was established in 2001 as a means to promote the exploration and development of renewable energy. Energuide, EcoEnergy and LEED are some of the government programs that we offer energy audits and consulting. All Net-Metering and MicroFIT projects are developed by us.
German Solar Corporation
German Solar Corporation, located in London Ontario is a company that specializes in the development of solar arrays and their construction. They also specialize in parking lots, rooftops, and building façades. German Solar Corporation has a solid knowledge base in solar project development that is well-suited to the Ontario market. Since 2009, the German Solar Corporation (GSC) has completed and… more...
German Solar Corporation, located in London Ontario is a company that specializes in the development of solar arrays and their construction. They also specialize in parking lots, rooftops, and building façades. German Solar Corporation has a solid knowledge base in solar project development that is well-suited to the Ontario market. Since 2009, the German Solar Corporation (GSC) has completed and developed more than 15 MWs worth of solar projects. Our main shareholder DSG has also developed and currently operates about 20 MWs of solar arrays across Europe. This pipeline complements DSG. German Solar Corporation has a passion for solar energy. They are working to maximize the potential of the sun in Ontario by offering cost-effective and innovative solar array solutions. We engage all stakeholders from conception to completion and aim to surpass expectations. German Solar Corporation's managers are highly experienced in the development, management, construction, financing, operation, and maintenance of solar parks. German Solar Corporation is proud to develop solar projects cost-effectively and efficiently.
How this London solar cost calculator works
This calculator sizes a solar system from your electricity use. Your monthly bill, divided by the average Ontario electricity price, gives your yearly use; Ontario's sunshine (1,170 kWh per kW of panels a year) then gives the system size that covers it, adjusted for roof direction and shade. The installed price is that size multiplied by the price per watt homeowners in Ontario pay installers. Payback compares that price with what the panels save at Ontario power prices, assuming prices rise 3% a year.
Ontario numbers this calculator uses
- Installed price
- $2.42–$3.05 per watt in Ontario (CAD) (typical $2.74), before rebates. A typical 6 kW home system costs $14,500–$18,300.
- Sunshine
- 1,170 kWh of electricity per kW of panels a year in Ontario.
- Electricity price
- About 15¢ per kWh, the average residential price in Ontario.
- Selling power back
- Ontario net metering credits exported power for the energy portion of your bill only, not delivery, and credits expire after 12 months.
- Rebates and tax credits
- The Home Renovation Savings Program pays $1,000 per kW, up to $5,000 or half the cost, for systems that power your home without net metering. Battery rebates are also available. There is no federal solar grant or loan open to homeowners in 2026: the Canada Greener Homes Grant closed to new applicants in 2024 and the Greener Homes Loan closed on October 1, 2025.
An estimate, not a quote. Roof size and pitch, shading, equipment, permits and the installer all change the final price; installers confirm it after a site visit. Sources: EnergyHub provincial installed-cost data, Natural Resources Canada photovoltaic potential, Hydro-Québec Comparison of Electricity Prices (2025), provincial utility and program pages.