Solaire · June 17, 2026
Commercial Solar in Quebec: 5 Mistakes SMEs Make Before Getting Started
Thinking about going solar? Avoid these 5 common mistakes Quebec SMEs make before even signing a contract.
More and more commercial and industrial building owners across Quebec are looking at solar energy as a strategic tool to reduce electricity costs and cut their carbon footprint. But between initial enthusiasm and signing an installation contract, several critical decisions are made, often without the right information.
The result: underperforming projects, missed savings, or worse, poor investments. Here are the 5 most common mistakes we see in the field, and how to avoid them.
Commercial solar in Quebec: 5 mistakes SMEs make before getting started
Mistake #1: choosing an installer without considering their conflict of interest
The first step for many SMEs is to call a solar installer directly. Nothing wrong with that, except you're asking someone with a financial stake in selling you a project whether or not you should buy one.
An installer has a direct commercial interest in convincing you that your roof is ideal, that payback will be quick, and that subsidies will cover a good portion of costs. That may or may not be true, but it isn't objective advice.
What to do instead: engage an independent consultant before contacting installers. A neutral assessment lets you determine whether your building is truly a good candidate, and allows you to go to tender with clear, defensible specs.
Mistake #2: ignoring the condition of the roof before planning solar
This is one of the most costly mistakes, and one of the most avoidable. Solar panels have a service life of 25 to 30 years. If your roof membrane needs replacing in 5 or 8 years, you'll need to remove the panels, redo the roofing, then reinstall. Additional cost: $40,000 to $100,000+, depending on system size.
Yet the vast majority of commercial solar projects in Quebec are planned without a serious assessment of the building envelope.
- What is the remaining service life of your membrane?
- Are there any active or past water infiltrations?
- Are drains functional and properly positioned to handle additional load?
- Can the roof structure support the weight of panels and mounting rails?
What to do instead: have the roof inspected by a commercial roofing expert BEFORE commissioning a solar installer. AL Pro Solutions provides comprehensive roof inspections with structured reports, a step that can prevent major surprises mid-project.
Mistake #3: underestimating the impact of Hydro-Québec's Rate M
Most SMEs consuming more than 50 kW of power are billed under Hydro-Québec's Rate M. This rate includes a demand component ($/kW) in addition to the energy component ($/kWh), and this distinction changes everything in the solar ROI calculation.
Solar reduces your kWh consumption, but it doesn't necessarily eliminate your demand peaks, especially in winter, when solar production is lowest and energy demand is highest.
A project sized without accounting for Rate M might promise annual savings of $80,000... and deliver only $40,000 in practice.
What to do instead: require a detailed rate analysis that models your real savings based on your last 12 months of Hydro-Québec bills, separating energy and demand components.
Mistake #4: confusing the available subsidy programs
The financial incentives for commercial solar in Quebec are real and substantial, but they're often misunderstood, underused, or misrepresented by salespeople eager to close a deal. The three main programs to know in 2026:
- Hydro-Québec's OSE 6.0 Program: up to $1,000/kW installed, capped at 40% of total project cost
- Federal Clean Technology Investment Tax Credit (CT ITC): 30% refundable credit on eligible costs
- Accelerated Capital Cost Allowance (CCA): Classes 43.1 and 43.2 allow 100% deduction in year one
These programs don't apply to every project. They have specific eligibility criteria, caps, and application deadlines. Miscombining them can result in double-counting, or a missed eligibility window.
What to do instead: ask your advisor to produce a detailed incentive table specific to YOUR project, showing net amounts after grants and tax credits.
Mistake #5: failing to consider battery storage from the design stage
Solar without storage is like an engine without a tank: it works, but only when the sun shines. For businesses billed under Rate M, adding a Battery Energy Storage System (BESS) can turn a good project into a great one.
By storing daytime solar energy and releasing it during evening or winter demand peaks, businesses can optimize both energy cost reductions and peak demand charge reductions.
The problem? Many SMEs don't ask about storage at the design stage, then need to integrate it as a retrofit, at significantly higher cost and with more complex installation constraints.
What to do instead: evaluate the scenario with and without BESS as part of your feasibility study. The incremental cost of integrating storage upfront is typically much lower than a later retrofit.
Summary: the right sequence for a successful solar project
- Independent roof inspection
- Hydro-Québec bill analysis (consumption profile and rate structure)
- Solar feasibility study with and without storage
- Identification of applicable subsidies and tax credits
- Structured tender process with qualified installers
- Project management and installation supervision
AL Pro Solutions guides commercial and industrial businesses throughout Greater Montreal, Laval, and Quebec through each of these steps, with no conflict of interest and no equipment to sell. Our role is to help you make the best decision for your building and your bottom line.
Considering a solar project? Get an independent analysis within 48 hours.
📧 al@alprosolutions.ca · 📞 514 222-0998 · 🌐 alprosolutions.ca
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Contact AL Pro Solutions : +1 514 222-0998 · al@alprosolutions.ca