Visible from the street means a minimum of 10 weeks
The city's own wording is broad: any modification of a front facade, or any exterior modification visible from a street, falls under by-law 2234. It does not carve out rooftop equipment, and it does not limit itself to the facade in the narrow sense, because the second clause covers anything visible from a street. An array on a slope facing the road is squarely inside that description.
What follows is not a formality. The city says the PIIA route brings additional processing fees, extra permit approval steps, and a minimum processing duration of 10 weeks. Minimum is the operative word: 10 weeks is the floor, not the estimate. Any installer promising a spring installation from a February conversation needs to be shown that number.
The practical consequence is that timing and roof-plane choice become the same decision. If the productive slope faces the street, you are on the 10 week route and should plan for it. If a rear or side slope that is not visible from a street would also work, you may be able to avoid the review entirely, at the cost of some production. Ask the city, by address, which of your roof planes it considers visible from a street, and ask your installer for a production estimate on each one. Then choose with both numbers in front of you rather than discovering the constraint after a contract is signed.
The questions to ask, and the order to ask them in
Start with the city rather than with quotes. The four questions worth asking the urbanism department are: whether your proposed array is visible from a street for the purposes of by-law 2234, what the PIIA submission has to contain, what the processing fee is, and what the realistic duration has been recently rather than the published minimum. Get the answers by email if you can, and note who gave them.
Only then talk about equipment. A design settled before the review question is answered is a design that may have to be redone, and a redesign after a PIIA submission means starting the 10 weeks again. The order matters more here than in most municipalities precisely because the floor is so high.
Do not let a payment schedule get ahead of the approval. On a project whose minimum approval time is measured in months, a deposit tied to an installation date rather than to an approval date puts your money at risk against a calendar nobody controls. Ask for the schedule to reference the permit, and treat reluctance as information.
Confirm who bills you before assuming which programme applies
Our record does not name an electricity distributor for Saint-Lambert, so this page will not tell you who yours is. In Quebec that question has more than one possible answer: most of the province is served by Hydro-Quebec, but a number of municipalities run their own electric utility with their own rules on customer generation. Check the name on your bill, because the answer decides which programme you can enrol in.
If Hydro-Quebec bills you, the provincial arrangement applies. A licensed CMEQ electrician files the installation request under the option d'autoproduction, surplus is credited in kilowatt hours rather than dollars, and the capacity limit on the option rose from 50 kW to 1 MW in 2026, far above anything a house needs. The rule that should set your system size is the reset: credits reset every 24 months, on 31 March of the even year following enrolment, and any balance left at that point is settled well below the retail price you pay to buy electricity back.
If a municipal utility bills you instead, ask it directly and in writing whether a customer-owned generator may connect, what happens to exported electricity, and what interconnection and metering are required, before you sign anything. Either way, size the array to what your household actually consumes over a year rather than to the roof area available, and give your installer twelve months of your own kilowatt hour totals.
Grants and financing
Hydro-Quebec's LogisVert residential solar grant pays 1,000 $ per kW of installed capacity and covers up to 40 percent of eligible project costs, typically landing around 5,000 $ to 6,000 $ on a residential system. Installations must be completed on or after June 30, 2025, and the claim is filed through the LogisVert portal within 9 months of the installation date. Hydro-Quebec projects that this brings a typical residential payback from 25 to 30 years down to roughly 10 to 12 years.
Two Saint-Lambert-specific cautions. If a municipal utility rather than Hydro-Quebec bills your address, confirm eligibility with the programme in writing first. And because the grant pays per kilowatt installed, a PIIA review that reduces the size or moves the position of an approved array reduces the grant with it, so settle the review before contracting for a specific system size.
Federally the options have narrowed. The Canada Greener Homes Loan, interest-free up to 40,000 $, stopped accepting new applications on October 2, 2025, and only previously approved loans are still being funded. The Canada Greener Homes Affordability Program replaced it in September 2025, delivering no-cost retrofits through provincial partners for low- to median-income households, with solar PV federally eligible but each province setting its own technology list. Canada has no federal investment tax credit for residential solar.