Solar Install in St. Catharines, ON, Canada

Hello everyone,

I am looking to install solar panels on our semi-detached home in St. Catharines, Ontario, Canada. We have just moved into the home, so we don’t have a yearly consumption. The utility company told us the previous owner used about 5000-6000 kWh per year (which seems a bit low). We are looking to add an EV that should consume another 3000kWh/year.

Here’s what the roof looks like

Using this: How to Size a Solar System: Step-by-Step | Unbound Solar it sounds like I need about an 8-9kW system.

I’ve gotten a few quotes as follows, note all prices are in Canadian dollars:

10.2kW system - 24 panels
Q.PEAK DUO L-G8.3 - 430w Panels
SMA Sunny Boy Inverter

Xolar - smaller
7.74kW system - 18 panels
Q.PEAK DUO L-G8.2 425 Panels
SolarEdge SE6000H-US Inverter

Xolar - larger
9.35kW system - 22 panels
Q.PEAK DUO L-G8.2 425 Panels
SolarEdge SE6000H-US Inverter

Terawatt Solar
9.9kW system - 22 panels
Canadian Solar Panels (need to confirm which model)
SolarEdge Inverter (need to confirm model)
$2,727.72/kW - most expensive

7.65kW system - 17 panels
Canadian Solar CS3W-450MS Panels
SolarEdge SE7600H-US Inverter

Sirius Power
8.1kW - 18 panels
Canadian Solar CS3W-450MB Panels
Enphase Energy, Model: IQ7A-72-2-US Inverter
$2,260.00/kW - most affordable

The pricing is similar, some installers offer reasonably affordable financing (2-3%) while others do not. I’m at a loss as to which to go with. Any insight would be greatly appreciated.

Thank you very much !

@kinz186 sorry for the late reply. We missed it.

How did you go with selecting a quote? You have many good options available. All the components listed are from reputable manufacturers but I personally prefer Enphase micro-inverter systems.

If you are looking to add an EV I would lean towards the larger 10kW systems as you may find you will need the extra generation capacity for charging, especially during poor weather.

Did you try out the CER solar sizing calculator tool?