The low-slope roof rule, and why solar is exempt from it
Levis applies a roof-covering rule to flat roofs and to roofs with a slope under 17 percent, which is roughly 2 units of rise to 12 of run. On those roofs the permitted coverings are a living roof with waterproofing, growing medium and a plant layer; white or grey materials, or materials painted in those colours; materials with a minimum solar reflectance index, 56 for buildings of one to four units and 76 for other buildings; or some combination of those.
The sentence that matters for a solar project is the exemption: the part of the roof occupied by mechanical equipment, solar panels or a terrace is not subject to those requirements. Read plainly, that means the city has already thought about rooftop equipment and decided it is not a roof-covering question. You are not going to be told your panels are the wrong colour, and the reflectance standard does not apply under the array.
The rule still shapes the job in one indirect way. If your low-slope roof is due for recovering and you are installing panels at the same time, the area outside the array still has to meet the standard, so the two pieces of work interact. Get the roofer and the installer talking before either books a date, and settle who is responsible for the covering under and around the array.
Slope, orientation and what a Levis roof actually produces
Natural Resources Canada puts Levis at about 1,136 kilowatt hours a year per kilowatt of installed capacity on a well oriented, unshaded array. Treat that as a ceiling for your address rather than a forecast. A slope facing generally south produces the most, east and west slopes still produce but give up output, and a north slope rarely repays the hardware.
The 17 percent figure in the roof rule is a useful reminder that low-slope roofs are common here, and they behave differently. A shallow roof sheds snow more slowly, and a panel under snow produces nothing until it clears, so winter output on a flat roof runs behind a pitched one even when the annual totals look similar. It also collects more dirt and debris, which matters over years rather than weeks.
Shading is the expensive variable in either case, because it removes production in the middle of the day when the array would otherwise be strongest. Ask for a shading assessment that covers the whole year rather than the afternoon of the site visit: a bare tree in April is a full canopy by July.
Hydro-Quebec, the two approvals and the credit bank
Hydro-Quebec distributes electricity in Levis, and adding solar means enrolling in the option d'autoproduction. A licensed CMEQ electrician files the installation request rather than you, and Hydro-Quebec evaluates whether the local network can accept your generation before granting conditional acceptance. That is a real gate rather than a formality, and it sits between a signed contract and a system allowed to export.
Residential billing is Tarif D, a two-tier block rate rather than a time-of-use rate. No hour of the day is cheaper or dearer, so there is nothing to gain by shifting when you run appliances. What solar does is remove consumption from the top of your usage, which tends to be the kilowatt hours billed at the higher tier price.
Surplus energy banks as a credit in kilowatt hours and offsets later consumption at parity, carrying summer production into winter bills. The bank resets every 24 months, and any balance sitting in it at that moment is settled well below the retail price you pay to buy electricity back. Capacity is not what limits you, since the option is capped at 1,000 kW. Your own annual consumption is, so size the array to 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, usually landing around 5,000 $ to 6,000 $ on a residential system. Installations must be completed on or after June 30, 2025, and the claim goes 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.
Treat the claim as a deliverable with an owner. Decide in the contract whether you or the installer submits it, keep the itemised cost breakdown, and set your own reminder against the 9 month window measured from the installation date, because it cannot be reopened afterwards.
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.