See what a solar system costs installed in Ottawa, sized from your power bill. Free, instant, no sign-up.
Updated · installer rankings recalculated
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| System | Installed cost |
|---|
Kajk Constructors Inc I Solar Energy & Green Retrofits Contractor
5.0 · 24 reviews · Free quote
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Quadra Power Inc. | Solar Power You Can Trust
4.7 · 21 reviews · Free quote
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Ottawa Solar Power Inc
3.5 · 17 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 1,199 kWh per kW a year in Ottawa. Installers confirm the final price after a roof check.
Ranked by TrustAnalytica from verified reviews · see the full Top 10 list →
Kajk Constructors offers residential, commercial, and industrial solar panel installations along with storage and maintenance solutions. Customers appreciate the team’s professionalism, clear communication, and affordable pricing. The installers keep clients informed throughout the process, making it easier to transition to solar energy.
Quadra Power Inc. specializes in solar plant construction and development, backed by a team with over 200 MW of direct solar project experience since 2007. They offer design, installation, and management of photovoltaic systems, with customers appreciating their knowledgeable, responsive team and timely project delivery, though some note occasional communication hiccups.
Holding the only A+ BBB rating for solar installations in Ottawa, Ottawa Solar Power brings over 25 years of combined experience in designing and managing solar systems. The team works with residential, commercial, and institutional clients, guiding projects from feasibility to commissioning. While many appreciate their knowledgeable and patient approach, some note occasional delays in… more...
Holding the only A+ BBB rating for solar installations in Ottawa, Ottawa Solar Power brings over 25 years of combined experience in designing and managing solar systems. The team works with residential, commercial, and institutional clients, guiding projects from feasibility to commissioning. While many appreciate their knowledgeable and patient approach, some note occasional delays in communication.
Execon Roofing and Solar specializes in solar development with over a decade of experience installing more than 25,000 panels and steel roofing across Eastern Ontario. Their team handles everything from design to installation, often navigating government programs and regulations. Customers appreciate their thoroughness and professionalism, though some note communication could feel a bit formal at… more...
Execon Roofing and Solar specializes in solar development with over a decade of experience installing more than 25,000 panels and steel roofing across Eastern Ontario. Their team handles everything from design to installation, often navigating government programs and regulations. Customers appreciate their thoroughness and professionalism, though some note communication could feel a bit formal at times.
EnerGlad Renewables specializes in low-cost, efficient photovoltaic operations and maintenance, managing over 5MW of solar assets in Eastern Ontario. The team handles repairs, inspections, and warranty claims, with customers appreciating their helpful, knowledgeable approach and prompt response. Some note limited parts availability but value the straightforward advice and service.
RealPart Canada is committed to the sustainability of energy by making viable, economically feasible projects a reality. Partnering with international supply companies, we use the best components and the most durable parts. This allows us to implement the most recent advancements in electrical systems, panels and substations for state-of-the art infrastructure projects. RealPart has installed… more...
RealPart Canada is committed to the sustainability of energy by making viable, economically feasible projects a reality. Partnering with international supply companies, we use the best components and the most durable parts. This allows us to implement the most recent advancements in electrical systems, panels and substations for state-of-the art infrastructure projects. RealPart has installed thousands of solar panels and knows the best way to make it affordable. RealPart makes meaningful improvements to existing, isolated grids. We adhere strictly to all regulations, and are focused on reliability and safety. All site issues are addressed, best practices implemented and methodologies used to make solar projects a reality. RealPart RealPart Canada, a developer and manufacturer of complete solar systems, has extensive connections to solar energy specialists and financial experts. We also have access to global solar product suppliers and financing sources. Solar services RealPart Canada is committed to the sustainability of energy by providing services in solar design, construction and planning.
| # | Business | Rating | Reviews | Starting price | Phone | Website |
|---|---|---|---|---|---|---|
| 1 | Kajk Constructors Inc I Solar Energy & Green Retrofits Contractor | 5.0 | 24 | $50 | (613) 869-8254 | Visit |
| 2 | Quadra Power Inc. | Solar Power You Can Trust | 4.7 | 21 | $20 | (888) 782-3721 | Visit |
| 3 | Ottawa Solar Power Inc | 3.5 | 17 | $50 | (613) 728-2412 | Visit |
| 4 | Execon Roofing and Solar | 4.8 | 12 | $100 | (613) 209-9871 | Visit |
| 5 | EnerGlad Renewables | 5.0 | 6 | $100 | (819) 921-8265 | Visit |
| 6 | RealPart Canada | 5.0 | 2 | — | (514) 892-0004 | Visit |
This calculator sizes a solar system from your electricity use. Your monthly bill, divided by the average Ontario electricity price, gives your yearly use; Ottawa's sunshine (1,199 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.
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.