Solar panels in St. Catharines, Ontario
Thirty kilometres from Niagara Falls, and thirty kWh/kW behind it.
St. Catharines is modelled at 1,150 kWh per kW a year, which places it in the middle of Ontario’s range — 18th of the 33 cities on this site, and 30 kWh/kW behind Niagara Falls half an hour down the road. Payback runs 9 to 12 years. The systems we have actually built here are the largest of any city in the Niagara area, which tells you something about the housing stock.
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Real Xolar installs in St. Catharines
Completed systems across the St. Catharines service area — first-hand specs, not industry averages.
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Niagara Falls — 15 kW rooftop
South-facing asphalt shingle · completed September 2023 · 40 progress photos on file
What 3 real St. Catharines installs tell us
Aggregated from completed Xolar systems in St. Catharines — first-hand data, not industry averages.
St. Catharines energy & net metering
What Alectra Utilities charges here, and how surplus solar is credited in Ontario.
Ontario’s Time–of–Use electricity rates range from 9.8¢/kWh (off–peak) to 20.3¢/kWh (on–peak), with mid–peak at 15.7¢/kWh (OEB RPP, Nov 2025–Oct 2026). St. Catharines electricity is distributed by Alectra Utilities. Solar panels generate most during daytime on–peak hours, earning you credits at the highest rate. The Ontario Electricity Rebate provides a 23.5% discount on your bill.
Alectra Utilities Time-of-Use rates in St. Catharines
What a kilowatt-hour costs at each tier, and the hours each one applies — OEB Regulated Price Plan, Nov 2025 – Oct 2026. Rates are set province-wide by the Ontario Energy Board, so they are the same whichever utility bills you; only delivery charges differ.
Alectra Utilities peak hours, by season
The tiers hold all year; the hours switch twice a year. Weekends and statutory holidays bill at the off-peak rate all day, in both seasons.
On-peak power costs 2.1× what the same kilowatt-hour costs off-peak. At the Ontario Energy Board's benchmark of 700 kWh a month, that is the difference between $68.60 and $142.10 on the electricity line alone — delivery and regulatory charges are billed separately, and the Ontario Electricity Rebate then takes 23.5% off the total.
This is why solar pays better here than a flat rate would suggest. A rooftop array produces most between 11 a.m. and 5 p.m. — precisely the summer on-peak window — so the power it offsets is the most expensive power St. Catharines buys.
How your system works behind the meter
Most of a St. Catharines system's value comes from power used behind the meter — electricity your panels make and your home uses on the spot, offsetting energy you'd otherwise buy at 9.8¢/kWh. Only the surplus flows past the meter to Alectra Utilities for net-metering credit.
Rebates & incentives in St. Catharines
Every active local, provincial, federal and Xolar program a St. Catharines homeowner can stack.
- Up to $7,500Home Renovation Savings Program (HRSP) – Heat Pump
- Up to $5,000Home Renovation Savings Program (HRSP) – Solar
- Up to $5,000Home Renovation Savings Program (HRSP) – Battery
- Up to 30% of eligible costsClean Technology Investment Tax Credit (Commercial ITC)
Solar Panels in St. Catharines, Ontario
St. Catharines in the Niagara Region produces 1,150 kWh per kW annually. Alectra Utilities distributes electricity. The Niagara Region’s moderate climate with lake-effect moderation supports strong year-round solar performance.
Ontario’s net metering program credits excess solar at the full retail rate. HRSP ($10K for solar + battery) or net metering available – but not both.
Ontario HRSP - Up to $10,000 for Solar + Battery
Ontario’s Home Renovation Savings Program (HRSP), launched January 2025, offers:
- Up to $5,000 for solar panels ($1,000/kW)
- Battery storage at $300/kWh up to $5,000
- HRSP maximums are per category rather than one shared pot: up to $10,000 for solar and storage, up to $12,000 for heat pumps, up to $7,700 for insulation
Important – HRSP vs. Net Metering: Solar installed under HRSP must be sized for on-site load displacement only – net metering is not permitted under HRSP. If you prefer net metering (earning 1:1 credits for excess solar), you would not apply through HRSP. Your Xolar advisor can help determine which option provides the best return.
Note: The Canada Greener Homes Grant and Loan programs are now closed.
Half an Hour From Niagara Falls, and Measurably Less Sun
St. Catharines and Niagara Falls are about thirty kilometres apart, and the modelled solar resource differs by thirty kWh per kW a year: 1,150 here against 1,180 there. That is roughly 2.5 per cent, and it is the kind of difference that gets lost in conversation but not in a twenty-five year production estimate.
Across the province the picture is middling rather than poor. St. Catharines ranks 20th of the 35 Ontario cities on this site, level with Guelph, Richmond Hill, Ajax, Whitby, Pickering and Vaughan at 1,150, ahead of Oshawa at 1,140 and Barrie at 1,130, and behind the southwestern group led by Chatham-Kent at 1,210. Payback runs 9 to 12 years on an average 10 kW system saving around $2,080 a year.
Why the gap with Niagara Falls, so close by? Lake effect. Both cities sit between Lake Ontario and Lake Erie, but St. Catharines sits closer to Lake Ontario and under the Niagara Escarpment, and the same moderating cloud that gives the area its mild winters and its fruit belt costs a little summer irradiance. It is the reason the page describes the climate here as moderate with mild winters due to lake effect. The trade-off is real in both directions: less sun, but also less snow load and fewer deep-cold days than a system in Sudbury or Thunder Bay has to survive.
None of this changes what you should do. A 2.5 per cent difference in irradiance is smaller than the difference between a south-facing roof and a south-west-facing one, and far smaller than the difference between a shaded roof and a clear one. Orientation and shading are worth more attention than your postcode.
The Systems We Build Here Run Large
Our St. Catharines installs are few, and they run large — noticeably larger on average than what we have built in Niagara Falls or Oshawa. The sizes themselves are listed on this page.
It is a small sample and we would not draw a strong conclusion from it. But it is consistent with what the housing stock here looks like: larger detached homes in Grantham, Martindale and Port Dalhousie, on lots with room for a full south-facing roof plane, and the kind of electricity bills that go with them.
It is worth setting against the 10 kW figure this page quotes as a typical system size. Both are true. Ten kilowatts is a reasonable planning assumption for a first conversation; what we have actually built in St. Catharines has been larger, because the houses that have come to us have been larger. More than one of the systems here sits well above the 12 kW micro-generation threshold, which means a different and slower connection process with the utility.
That threshold is the practical thing to know if you are planning a big system here. St. Catharines is served by Alectra Utilities, and a system of 12 kW or less follows the simplified micro-embedded generation route. Above it you are into the embedded generation process, which takes longer and involves more engineering review. If your roof and your bill would justify 14 kW, it is worth asking your installer early what the extra kilowatts cost you in time as well as money.
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Areas We Serve in St. Catharines
Professional solar panel installation available in these St. Catharines neighborhoods and communities:
What St. Catharines homeowners say
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"I had my solar system installed by Xolar and I’m extremely satisfied with both the hardware and the overall setup. The system delivers immediate savings on my Hydro bill and is performing better than I expected, even under winter conditions. The hardware layout is clean, thoughtfully designed, and integrates seamlessly with my existing electrical system.The project timeline was solid: I placed my order in August, the installation took place over the winter, and everything was fully completed by April, including all permits and approvals from the city. The only hiccup in the entire process was a hardware shortage during the ordering phase, which required me to follow up a few times. That delay was frustrating, but ultimately handled well.A special mention goes to Lauren, who has been a great point of contact from start to finish. She is responsive, clear in her communication, and consistently advocated on my behalf to resolve issues and push past any delays. Having someone like Lauren to talk to made a big difference and kept my confidence in the project high.Overall, I would definitely recommend Xolar to anyone considering a solar installation. Once the hardware arrived, everything moved smoothly, the system was set up correctly the first time, and the performance and savings so far have exceeded my expectations."
"Xolar rep is very knowledgeable about solar product and the government rebates that can help make the project happen. Spencer was able to answer all my questions and made the decision to proceed with the application an easy one."
"I was interested and curious in solar panels. I had researched and had quotes from a few providers. Xolar took the time to explain to me the process (without talking down to me), and clearly laid out how to manage the Canada Green Homes Loan. I never had to wait more than a day to an answer to any question I had during the installation process. I found Xolar to be professional and competent, and the organization cared more about quality of product then just making a profit."
"Abe was very attentive to my needs, he thoroughly explained the proposal he sent, and answered all my questions in detail. We chatted about a few other subjects and I discovered that he is a pleasant and knowledgable person to deal with."
"Xolar installed panels to our home. They were very professional and excellent at getting back to us. I would definitely recommend them to others ."
"Spoke with a representative. Very pleasant and professional.all representatives of the team were helpful, courteous and professional. I highly recommend Xolar"
St. Catharines solar questions
What solar production does St. Catharines get?
1,150 kWh/kW – solid for southern Ontario.
Niagara Region gets good sunshine.
HRSP ($10K for solar + battery) or net metering available.
What solar rebates are available in St. Catharines?
Ontario’s HRSP provides up to $5,000 for solar + battery storage at $300/kWh up to $5,000 (heat pumps carry a separate $12,000 maximum).
Important: HRSP solar cannot use net metering – customers must choose one or the other.
The federal Greener Homes programs are now closed.
Who provides electricity in St. Catharines?
Alectra Utilities distributes electricity in St.
Catharines.
Ontario’s Time-of-Use rates: 9.8¢ off-peak, 15.7¢ mid-peak, 20.3¢ on-peak.
The Ontario Electricity Rebate provides a 23.5% discount.
How does net metering work in St. Catharines?
Alectra Utilities offers 1:1 net metering – excess solar earns credits at the full retail rate.
Credits roll over for 12 months.
As of May 1, 2026, the net metering system size threshold was raised to 12 kW for residential customers.
Note: Solar under HRSP cannot use net metering.
Does St. Catharines get less sun than Niagara Falls?
Slightly, yes.
St.
Catharines is modelled at 1,150 kWh per kW a year against 1,180 in Niagara Falls — about 2.5 per cent less, over a distance of roughly thirty kilometres.
St.
Catharines sits closer to Lake Ontario and under the escarpment, and the lake effect that gives the area its mild winters and its fruit belt also brings a little more cloud.
In practice the difference is smaller than what you would gain or lose from roof orientation: a south-west-facing roof in Niagara Falls and a due-south roof in St.
Catharines will not favour the city you might expect.
Across Ontario as a whole St.
Catharines ranks 18th of the 33 cities on this site, level with Guelph, Whitby, Pickering and Vaughan.
What happens if my system is larger than 12 kW?
It still goes ahead, but through a different process.
Twelve kilowatts is the province-wide threshold for simplified micro-embedded generation, and Alectra Utilities applies it here as every Ontario distributor does.
At or below it, connection follows the streamlined micro route.
Above it, the system is treated as an embedded generator, which means more engineering review and a longer timeline.
This is not hypothetical in St.
Catharines: more than one of the systems we have built here sits well over that line.
If your roof and your consumption point to a system that size, ask about the connection timeline at quoting stage rather than after the panels arrive.
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