r/solarenergycanada

I'm in the planning stages for a new solar install (no simplified CIA) and the installer keeps pushing me to sigenergy batteries, saying that they're DC-coupled and this is special in some way because it does not count towards my total system capacity the same as an AC-coupled solution.

On the surface this sounds really counter-intuitive to me.

They're trying to tell me that, for example, I wouldn't be allowed to use much cheaper Ecoworthy batteries for this install, because they'd need to be AC-coupled, and this would eat up my total capacity allowance.

Supposedly the argument here is that "AC-coupled" battery capacity counts towards the system capacity as far as the utility is concerned (e.g. batteries that can output 5kW + panels that can output 5kW = 10kW capacity from the utility's perspective) whereas "DC-coupled" battery capacity does not count towards this limit in the same way.

So, I have two obvious questions...

1. Is this differentiation between how the utility considers capacity with AC vs DC coupled batteries a real thing?
2. Is it true that only specific batteries can be DC-coupled?

TIA for any help, it's very much appreciated!!

I just want to update here in case anyone plans to install solar and want to know what to expect. I am in Mississauga, Ontario and I installed solar panels on the roof one year ago. I don't have the most ideal orientation, here are the technical details:
- 13 panels facing N-E
- 3 panels facing S-E
- 16 panels facing S-W
- all panels are LR5-54HPB-410M
- total system is 13.12 KW and the inverter is SolarEdge 10000

I am on Net Metering agreement and I managed to get last train for Canada Greener Homes Loan, so I'm paying $267 / month for 10 years. For calculation, I used the SolarEdge website and exported the hourly data. I created a Google Sheet with one Summary tab, and a tab for each year to store the data. I also used Google to get a script that will transform the production (in Wh) to $ amount, based on TOU or ULO plan (I have TOU). This looks like this:

Sample of production data and equivalent $ amount

The Summary tab that covers July 2025 - June 2026. As you can see, I am not producing enough to cover my payments. The payback period assuming that the current electricity prices stays at the current level is 15.78 years.

https://preview.redd.it/ru5or418gwah1.png?width=1018&format=png&auto=webp&s=a039cc0558a1e5b8d1ed62d1ddfca577fabfdf2b

EDIT:

Payback Period by Rate Increase

• 📉 Scenario 1 (3% Yearly Increase): Your system pays for itself in 13.11 years.
• ⚖️ Scenario 2 (5% Yearly Increase): Your system pays for itself in 11.92 years.
• 📈 Scenario 3 (7% Yearly Increase): Your system pays for itself in 11.00 years.
• 🔥 Scenario 4 (10% Yearly Increase): Your system pays for itself in 9.93 years.

I did solar back in the spring, called hydro and double checked that it was fine if I used my own electrical buisness to be my own installer. I got it done and after a bit of a wait have been connected for a few months.

I have currently been dealing with the rebate department for two months now - I had a couple mistakes in my application such an invoice but did not realize i hadn't attached the proof of payment. I can't see what files i have submitted and they don't seem to fully read my responses, they only respond by email no phone and they take a week to respond each time. It's all stuff that a 10 minute phone call would have cleared up.

The last email they were asking yet again for an installation invoice - but the only thing my buisness paid for was the permit and the electrical components to go from my roof box to panel - there's no reason i would charge myself labor. I'm now at 2 weeks since their last reply. I changed the wording in the invoice to myself to include the phrase installation.

Anyways, what an annoying process - I have made sure to stay polite the entire time of course, after all i did miss some paperwork. But it's almost like the department is designed to stop you from getting the rebate and I'm kind of tempted to say screw it.

Right now I'm 2600W micro system that i spent $5k on, they owe me $2600 in rebate. Right now I'm locked into trading watt for watt for the next 10 years but the moment i take the rebate they will force me to switch to selling at 10 cents. Right now it's not too bad because i only pay 11.8, only use stage 1, and still use double what i make (just not at the same time). However they can continue to make me change my deal or jack up the sell price without changing the purchase price.

For the people that take out a loan for the solar project let's say around 30k. The goal is to cover 100 % of your consumption. Your monthly loan payment is roughly 300 $ a month. Now in the summer months that's great because your are paying for the loan and no electricity from the electric company. But what happens during the winter months? Do you have a loan payment as well as the electric bill pretty much in full?! Edit to add that in Michigan, DTE does not allow you to put more than 110 % worth of production panels on your roof. So you are limited to how much you can produce even on the best months...

We are currently seeing a ton of homeowners with "0% solar financing" offers who assume it actually means free financing so I wanted to provide some more context. The reality is that private lenders aren't lending money for free!

In most cases, the financing cost is recovered through:

• Dealer fees - The lender charges the installer a dealer fee (which can be 25–35% of the loan amount). That cost is often just passed on to the homeowner via a higher project price.
• Promotional rates - The 0% or low interest expires after a few years then the homeowner has to refinance at a much higher rate (often 10% or higher).

Red flags to watch out for:

• Emphasis on monthly payments - Focusing on "$X per month" distracts from the total amount you ultimately pay.
• Time-sensitive offers - Statements like "This promotion ends this month" or "You need to sign today to lock in this rate" can discourage homeowners from getting additional quotes.

A few questions worth asking:

• How is the lender making money?
• Is there a dealer fee? If so, how much?
• What interest rate applies after the promotional period ends?
• What is the total amount I'll pay over the life of the agreement?

Alternative financing options:

• Cash purchase
• Home Equity Line of Credit (HELOC)
• Adding the cost to a mortgage renewal or refinance
• Municipal financing programs
• Delay the project until better financing is available

To be clear, this doesn't mean all solar loans are bad and it certainly doesn't mean solar is a bad investment. Many installers are very transparent about the financing they offer.

The key is understanding the financing before you sign. If you're considering solar, take your time, get multiple quotes and make sure you understand exactly what you're agreeing to.

Full disclosure I work for Glean and we review 1,000's of solar quotes each year which is where these insights are coming from.

Would like to hear input from anyone who has Polaron panels on PEI. Looking at a house that has them. Seller has paid off ~5 years; ~8 years remaining. I read about penalties for changes, 0% financing built into the cost, poor service, someone explain "micro inverters" plz?

And has anyone paid off the lease early? Can you? Is it cheaper?

Please share your experience, thanks!