RetrofitWR Loan: Up to $40,000 at 2.5%
for Solar in Waterloo Region

By the Solar X Canada Team, ESA/ECRA Licensed Electrical Contractor (Licence 7017538). Published July 16, 2026. Last verified July 16, 2026. Every program figure was checked against the Region of Waterloo and RetrofitWR.ca on the publication date. Next review: October 2026.

The Region of Waterloo has launched RetrofitWR, a home energy retrofit program that lends eligible homeowners up to $40,000 at a 2.5% fixed interest rate for upgrades that cut home energy use. Rooftop solar panels and battery storage are on the eligible list. Repayment happens through your monthly GrandBridge Energy electricity bill over 10 or 15 years.

Here is the honest version, including the parts most marketing pages skip: who actually qualifies, what it really costs, where solar fits, and the fine print that matters before you sign.

The Key Facts

• Loan amount. Up to $40,000. Minimum project value is $10,000.
• Interest rate. 2.5% fixed for the full term.
• Terms. 10 or 15 years, repaid on your monthly GrandBridge Energy bill.
• Who can borrow. GrandBridge Energy customers in Waterloo Region, which today means Cambridge and the Township of North Dumfries.
• Solar eligible. Yes. Rooftop solar photovoltaic systems and battery storage are listed eligible upgrades.
• Program window. 2026 to 2030, delivered by the Region of Waterloo with GrandBridge Energy and Reep Green Solutions, funded through the Federation of Canadian Municipalities' Green Municipal Fund.
• Free for everyone in the Region. Independent energy coaching, even in cities where the loan is not yet available.

Sources: Region of Waterloo, Retrofit Waterloo Region and RetrofitWR.ca.

What Is RetrofitWR?

Think of RetrofitWR as a package with three parts.

First, a low interest loan. The Region lends you the money for approved upgrades and you pay it back in fixed instalments added to your GrandBridge Energy electricity bill. Because the Region secured funding through the federally backed Green Municipal Fund, the rate is 2.5% fixed, well below typical bank renovation loans or unsecured lines of credit.

Second, a free Energy Coach. This is an independent advisor, delivered with Reep Green Solutions, who helps you plan the project, confirms which upgrades qualify, reviews contractor quotes and flags other incentives you may qualify for. Energy coaching is open to eligible homeowners across all of Waterloo Region, not just loan applicants.

Third, built in incentives that reduce your loan balance after the work is done. More on those below.

What the Loan Covers

Your project must target at least a 25% reduction in your home's energy use, verified by a home energy assessment before the work and another one after. At least 70% of project costs must go to energy efficiency measures. Up to 30% can go to other eligible work.

Eligible energy efficiency upgrades include:

• Rooftop solar photovoltaic systems and battery storage devices
• Air source and ground source heat pumps, plus connected thermostats
• Attic, wall and basement insulation, air sealing and weather stripping
• Energy efficient windows, exterior doors and skylights
• Electric and heat pump water heaters, solar hot water, drain water heat recovery
• Energy Star appliances and permanently affixed lighting

Other eligible costs include electrical panel and wiring upgrades, load management equipment, mould mitigation, asbestos removal, building permit fees and the energy assessment itself.

Not eligible: cosmetic renovations, routine maintenance, and any work you started or finished before your Property Owner Agreement is signed. That last one catches people. If you sign a solar contract before RetrofitWR approval, that project cannot be financed through the program.

Who Qualifies, and Who Does Not Yet

To borrow, you must:

• Be a GrandBridge Energy customer in Waterloo Region. GrandBridge serves Cambridge and North Dumfries within the Region. That is the current loan zone.
• Own a single detached home, townhome, duplex or row house up to three storeys.
• Use the home as a full time primary residence, for you or someone else. Landlords may qualify in some cases.
• Be up to date on your energy bills and have a good credit score.

Eligibility decisions typically take about 10 business days.

If you live in Kitchener, Waterloo, Wellesley, Wilmot or Woolwich: the loan is not available to you yet, because your electricity comes from a different utility and repayment runs through GrandBridge bills. The Region says it is in talks with other local utilities, but there is no timeline and no guarantee of expansion. What you can use today is the free energy coaching, plus provincial incentives like the Home Renovation Savings rebate. Our Kitchener solar guide covers the local options in detail.

What It Costs: The Real Numbers

The program publishes its own repayment example, which we checked against the 2.5% fixed rate. For a $30,000 loan:

The shorter term costs more per month but saves you about $2,000 in interest over the life of the loan.

Upfront and other costs to plan for:

• Initial energy assessment. $500 to $700, paid by you before financing approval. This cost can later be rolled into the eligible project.
• Administration fee. $450, added to the loan at project completion. It is currently waived for early participants for a limited time and permanently waived for income eligible households.
• Initial disbursement. Once approved, you receive up to 40% of approved project costs upfront, which covers contractor deposits. The balance comes after the final assessment.

Repayment rules worth knowing before you sign:

• You can repay the full balance any time with no penalty.
• You cannot make partial lump sum payments. It is monthly instalments or full payout, nothing in between.
• If you move, the loan must be repaid in full before you close your GrandBridge account. It does not transfer to the buyer.
• You have 12 months from signing your Property Owner Agreement to finish the approved work.

Incentives Built Into the Program

RetrofitWR applies incentives against your loan balance after your project is complete, so you repay less than you borrowed.

• Heat pumps. $2,500 for a qualified ducted heat pump system, or $1,000 per ductless mini split unit up to $2,500 total.
• Income eligible households. An additional $1,000 to $3,000 based on the energy reductions achieved, plus the permanent waiver of the $450 administration fee.

Example from the program: a $30,000 project that earns $2,500 in incentives leaves you repaying $27,500.

Your Energy Coach will also flag external incentives you may qualify for. That leads to the biggest strategic question in this whole program.

The Solar Decision: RetrofitWR Loan, Net Metering, or the HRS Rebate

This is where Waterloo Region homeowners need to slow down, because two good programs interact in a way that is easy to get wrong.

Ontario's Home Renovation Savings program pays up to $5,000 for rooftop solar and up to $5,000 for battery storage. But the official program rules state that households who take the HRS solar and battery incentive are not eligible for a net metering agreement with their utility. HRS systems must be designed for load displacement, meaning your solar powers your own home only, with no credit for exports to the grid.

RetrofitWR, on the other hand, is a loan, not a rebate. Based on the published program materials, it finances the system without dictating your metering arrangement, and GrandBridge Energy offers net metering in its territory. Whether your specific project can pair RetrofitWR financing with net metering, or stack RetrofitWR with the HRS rebate, depends on rules from three separate parties: the Region, the IESO, and your utility.

Our standing advice at Solar X, and how we run every project in this situation: get every program approval confirmed in writing before you sign an installation contract. Program rules change, funding windows close, and no rebate, loan or connection approval is guaranteed until the approving body says so on paper. We have published a full breakdown of the tradeoff in our guide to the HRS rebate versus net metering in Ontario, and a wider roundup in our Ontario solar programs guide.

The short version: homes that export a lot of surplus daytime power often do better on net metering over the system's life. Homes that consume most of their own generation, especially with a battery, can do better taking the rebate. The right answer comes from your actual 12 month hydro data, not from a headline.

How the Process Works, Step by Step

1. Contact the Energy Coach. Reach the free, independent Energy Coach through RetrofitWR.ca, by email at info@retrofitwr.ca, or at 519 744 9799.
2. Confirm eligibility. The Region reviews your address, utility account and credit. Eligibility decisions typically take about 10 business days.
3. Complete the initial home energy assessment. You pay for the initial assessment, typically $500 to $700, and plan the project with your coach so it meets the 25% energy reduction target and the 70% efficiency cost rule.
4. Sign the loan agreement. Sign the Property Owner Agreement with the Region of Waterloo and receive an initial payment of up to 40% of approved project costs to cover contractor deposits. Work started before this signature cannot be financed.
5. Complete the upgrades with qualified contractors. You choose your own contractor. Electrical work, including all solar and battery installations, must be done by licensed professionals, and some upgrades need a building permit from Cambridge or North Dumfries. Loan approval does not replace a building permit. You have 12 months from signing to finish the work.
6. Complete the final home energy assessment. A second assessment verifies the energy reduction achieved. You then receive the final loan payment, and any earned incentives are applied against your balance.
7. Repay through your GrandBridge Energy bill. Fixed instalments are added to your monthly GrandBridge Energy electricity bill by preauthorized payment over your 10 or 15 year term.

You can reach the Energy Coach through RetrofitWR.ca, by email at info@retrofitwr.ca, or at 519 744 9799. Building permits come from Cambridge or North Dumfries.

For solar specifically, add the steps every Ontario install requires regardless of financing: utility connection approval and the mandatory Electrical Safety Authority inspection. Solar X submits and coordinates both on every project. Timelines depend on utility and ESA queues, so no install date is real until those approvals are in hand.

The Risks and Fine Print, Stated Plainly

We flag these on every financing program we cover, because surprises after signing are how solar projects go sideways.

• Geography risk. Loans are limited to GrandBridge customers in Cambridge and North Dumfries today. Expansion is a goal, not a commitment.
• Timing risk. The $450 fee waiver is for a limited time and the program window is 2026 to 2030, subject to available funding. Incentive programs in Ontario have changed with little notice before.
• Scope risk. Work done before approval is not financeable. The 25% energy reduction target and the 70% efficiency cost rule shape what your project can look like.
• Exit risk. Moving means repaying in full. If a sale is likely within your loan term, price that in now.
• Stacking risk. Combining RetrofitWR with HRS or any other incentive is only real once each program confirms it in writing for your specific project.

None of these are reasons to avoid the program. A 2.5% fixed rate with incentives deducted from the balance is genuinely strong financing. They are reasons to plan the project properly before committing.

Where Solar X Fits

Solar X Canada is an ESA/ECRA licensed electrical contractor (Licence 7017538) with more than 10,000 solar and battery installations completed across Canada since 2017, including projects throughout Cambridge and Kitchener. For RetrofitWR projects we:

• Model your system against your real 12 month hydro data and show the loan, rebate and net metering paths side by side before you commit to any of them.
• Design systems that pass ESA inspection the first time and handle the utility connection paperwork with GrandBridge Energy.
• Put every incentive assumption in writing in the proposal, so what you sign matches what the programs actually approve.

If you own a home in Cambridge or North Dumfries and want to know what a RetrofitWR financed solar project would look like on your roof and your bill, book a free assessment or call 1 833 376 5279. If you are elsewhere in Waterloo Region, we will show you the options available today and flag you for an update if the loan zone expands.

Frequently Asked Questions

Sources and Verification

All program figures in this article were checked against the primary sources on July 16, 2026:

1. Region of Waterloo, Retrofit Waterloo Region: regionofwaterloo.ca
2. RetrofitWR.ca program details and homeowner FAQs: retrofitwr.ca
3. GrandBridge Energy service territory: grandbridgeenergy.com
4. Save on Energy and Enbridge, Home Renovation Savings, solar and battery: homerenovationsavings.ca