Solar Panel Cost Calculator Markham, ON
See what a solar system costs installed in Markham, sized from your power bill. Free, instant, no sign-up.
Updated · installer rankings recalculated
Take the middle of a winter and a summer bill if yours changes a lot.
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| System | Installed cost |
|---|
XOLAR INC.Premium
4.6 · 832 reviews · Free quote
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Terawatt SolarVerified
4.7 · 27 reviews · Free quote
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Brightworks Energy Inc.
4.4 · 14 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 Markham
Ranked by TrustAnalytica from verified reviews · see the full Top 10 list →
XOLAR INC.
Xolar Inc. offers a full-service approach to residential and off-grid solar systems, guiding clients through design, permitting, and installation. Their team handles everything from equipment selection to energy storage solutions, with many customers appreciating their helpfulness and technical knowledge. Some clients note delays and communication challenges after installation.
Terawatt Solar
Terawatt Solar specializes in commercial solar panel installations that help Ontario businesses lock in stable electricity rates for 25 years. Their team handles custom projects for various industries, including hotels and manufacturing, with a focus on cost-effective, sustainable energy solutions. Customers appreciate their professionalism and thorough follow-up, though some note occasional… more...
Terawatt Solar specializes in commercial solar panel installations that help Ontario businesses lock in stable electricity rates for 25 years. Their team handles custom projects for various industries, including hotels and manufacturing, with a focus on cost-effective, sustainable energy solutions. Customers appreciate their professionalism and thorough follow-up, though some note occasional delays during the process.
Brightworks Energy Inc.
Brightworks Energy focuses on providing transparent and customer-centered renewable energy solutions, especially for homeowners navigating programs like MicroFIT. Their team handles everything from design to installation, with many customers appreciating their professionalism and responsiveness, though some note occasional project delays and communication challenges during complex approvals.
Microgreen Solar Corporation
Microgreen Solar Corporation specializes in off-grid energy systems designed and made in Canada, focusing on lithium batteries and solar storage solutions suited for harsh climates. Their team offers installation-ready products for homes, cottages, and vehicles, with customers noting knowledgeable support, though some mention occasional technical glitches and mixed follow-up experiences.
Latest reviews of Markham Solar Panel Companies
Written on TrustAnalytica by clients of the businesses in this list-
I enjoy working at this company :)
About XOLAR INC.
How this Markham 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.