Calgary Solar Companies: 24 Installers, Ranked by Google Reviews

Review volume is a strong starting signal — it’s why we lead with it — but it isn’t the whole picture on a purchase this size. Solar is a 25+ year decision, and the criteria below apply to any installer you’re considering, whether or not they appear in our ranking above. No installer pays for placement on this page, so we have no reason to soften this list.

Local install volume, not just years in business

“Years incorporated” and “years actually installing in Calgary” are different numbers. Ask directly: how many completed Calgary installations, not just quotes? A company with 500 local installs has seen far more of Calgary’s roof types — steep post-war pitches in the inner city, newer 200A-ready builds in the NE and SE — than one with 50.

Three warranties, not one

A Calgary residential system carries three separate warranties, and only one of them depends on the company you hired still being in business:

• Panel warranty: 25–30 years, backed by the manufacturer
• Inverter warranty: 10–25 years, backed by the manufacturer
• Workmanship warranty: typically 5–10 years, backed by the installer

Several Canadian solar companies have closed in the past five years, leaving customers with manufacturer coverage only and no one local to call for a workmanship issue. Ask how long the company has operated in Calgary specifically, not just how long the brand has existed.

APEGA-stamped engineering

Every legitimate residential solar installation in Alberta requires APEGA-stamped engineering — structural review for snow and wind load, plus electrical sizing and breaker coordination. This isn’t an optional upgrade; skipping it is a code violation. Ask to see a stamped drawing for a comparable Calgary installation before signing.

In-house or subcontracted?

When something needs service in year 8, who shows up? Installers with in-house crews typically diagnose and resolve issues faster than ones who subcontract to third-party electricians. Ask directly — “do you have an in-house service team, or do you subcontract?” — and expect a specific answer.

Calgary-specific context that changes the math

Alberta is Canada’s only fully deregulated retail electricity market, which means your net metering export credit rate depends on which retailer you choose, not a single fixed utility rate — a Calgary installer should be fluent across retailers, not just pushing one default. Calgary’s CEIP financing intake is closed as of August 2026 with the next round opening September 24, 2026 (see our incentives section above), so ask how the installer handles the application timing. And Calgary’s cold winters actually increase panel efficiency rather than hurting it — an installer who treats winter as a downside instead of explaining this is worth a second look.

Red flags

Green flags

The single best question to ask any Calgary solar company: “How many installations have you completed in Calgary specifically, and can I see a recent one?” A specific, verifiable answer is the strongest signal you’ll get in a 20-minute call.