A typical 6 to 8 kW system in Canada commonly lands in the mid-teens to high-twenties of thousands of dollars before incentives (CAD, as a rough range). Not everyone has that sitting in a savings account, and not everyone should drain savings even if they do. This guide walks through the main ways homeowners pay for solar and what each one asks of you.
Start with what you are financing
Before you compare lenders, pin down the net cost. Subtract only the incentives you have confirmed are open, not the ones you saw in an old article. The federal Greener Homes Grant is closed and the interest-free loan reportedly stopped taking applications on 1 October 2025, so read our note on the Greener Homes Grant and Loan before you assume any federal help. Then compare several quotes using the method in how to choose an installer.
Paying cash
Cash is the simplest route. No interest, no lender, no paperwork beyond the installation contract. The downside is opportunity cost: that money could go to a mortgage, a registered account or an emergency fund. Many people find a reasonable middle by paying a deposit in cash and financing the rest.
If your electricity rate is high and your system produces well, cash tends to give the shortest payback. Where rates are low, cash can feel like a slow burn, and you may prefer to keep the money flexible.
Home equity line of credit
A home equity line of credit, often called a HELOC, lets you borrow against the value you hold in your home. Rates are usually lower than on unsecured credit, and you can often repay early without penalty. The catch is the security: your house backs the debt. Rates on most lines also float, so the payment can rise.
It suits someone with steady income, good equity and discipline to repay the balance rather than treating the line as a permanent loan.
Personal loan
An unsecured personal loan has fixed payments and a set term, commonly somewhere between three and ten years. There is no claim on your home, which some people prefer. The price of that comfort is a higher interest rate than a secured line.
Run the numbers on the total repaid. A 10-year term can make the monthly payment small while the interest quietly eats a large share of your savings.
Installer or third-party financing
Some installers arrange loans through a partner. The process is quick, sometimes finished in a single visit. Watch for three things: a rate that is promotional and then resets, fees folded into the price, and a “cash price” that is lower than the financed price. Ask for both prices in writing. If the gap is large, the loan is costing you more than the stated rate suggests.
Green mortgage and mortgage top-ups
Some lenders offer lower rates or rebates on mortgage products when a home is energy efficient, and some let you add renovation costs when you refinance or renew. Terms differ widely and change often, so verify them with your lender. Refinancing mid-term can trigger penalties, which can cancel out any saving. A top-up at renewal can be cleaner.
Comparing the options
| Option | Interest cost | Security | Good for |
|---|---|---|---|
| Cash | None | None | Those with spare savings |
| HELOC | Usually lower, often variable | Your home | Disciplined borrowers with equity |
| Personal loan | Higher, usually fixed | None | Those who want fixed payments |
| Installer financing | Varies, may be hidden in price | Varies | Convenience seekers who compare prices |
| Mortgage top-up | Often lower | Your home | Homeowners at renewal |
Rates and terms in this table are directional only. Check current offers before deciding.
What leases and PPAs are
A lease or power purchase agreement is not a loan. You usually do not own the panels, and the contract can attach to the property. They deserve their own read, which is why we cover them separately in solar lease vs PPA in Canada.
A worked example
Suppose a two-storey house gets a 7 kW system quoted at $21,000, and you expect about $1,700 a year in bill savings. Paid in cash, the simple payback is roughly twelve years. Financed at a fixed rate over ten years, the payment might exceed the yearly savings, which means the house pays you back more slowly than the loan comes due. Stretch the term to fifteen years and the payment may fall below the savings, but you will repay more in total. This is not a recommendation. It shows why the term matters as much as the rate. Our page on the solar payback period shows how to model it with your own figures.
Questions to ask any lender
- What is the annual percentage rate, and is it fixed?
- Are there fees to set up or repay early?
- What is the total repaid over the full term?
- Is the loan secured against my home?
- What happens to the loan if I sell the house?
Keep an eye on the full set of options in our incentives and financing hub, and treat financing as a tool rather than a goal. A solar system that only works at a very long loan term may not be worth buying yet.
Quick answers
What is the cheapest way to finance solar panels?
Cash is cheapest because there is no interest. If you borrow, a home equity line or a mortgage-based product often carries a lower rate than an unsecured loan, but compare the total cost and the risks.
Should the monthly loan payment be lower than my savings?
It is a useful test. If the payment is below your expected bill savings, the project can feel cash-flow neutral, though savings vary with rates and weather.
Is installer financing a good deal?
It can be convenient, but the rate or fees may be built into the price. Ask for the cash price and the financed price separately.
Where to verify
Rules and prices change. Confirm current details with the official bodies below.