How much solar energy can Alberta panels produce?

What does a typical year of production look like?

Output follows daylight and the height of the sun. June brings long days and a high sun, so a south-facing array makes its best months from late spring to early autumn. December has short days and a low sun, and snow may sit on the panels, so production is a fraction of the summer peak. The ratio varies by city and roof, but a summer-to-winter gap of several times is common at Alberta's latitudes.

Clear skies help the shoulder months. Dry winter weather often delivers bright days in February and March, and the sun climbs quickly after the solstice. For a regional comparison of sunshine, see Alberta sunshine hours by city, and for the sizing metric, peak sun hours in Canada.

How do you turn sun into kilowatt-hours?

A rough method multiplies system size by the yearly yield per kilowatt. Suppose a 7 kilowatt array and an assumed 1,200 kilowatt-hours per kilowatt per year. That gives about 8,400 kilowatt-hours (7 x 1,200). If a household uses 9,000 kilowatt-hours a year, the array covers a large share of annual use on paper. It is an illustration with assumed numbers, not a forecast.

Real production depends on tilt, direction, shade, panel type, inverter losses and snow. A good estimate states each assumption, as covered in how to read a solar production estimate. To size the system for your own use, the guide to how many panels you need walks through the steps.

Why does the seasonal mismatch matter?

Households use the most energy in the dark months, when heating, lighting and longer indoor hours push consumption up, and solar produces the least. The grid fills the gap, and in summer the surplus flows out. How export credits bridge the seasons depends on the utility's rules, which you can check using Alberta net metering explained. Batteries shift energy within a day, but they do not carry summer surplus into winter, a limit explained in solar battery storage in Canada.

The mismatch is the reason seasonal storage ideas exist at all. Drake Landing in Okotoks stored summer heat in a field of boreholes for winter use, and our borehole storage page describes how it worked. The same logic applies to heat but not easily to electricity at household scale.

What reduces or increases output in Alberta?

Orientation and tilt matter, as does shade from trees and neighbouring buildings, covered in solar panel shading and fixes. Cold air raises panel efficiency, and bright snow can add reflected light, while snow cover on the panels removes output until it slides off. Hail, dust and smoke can also reduce yield in some years. Annual figures hide these ups and downs, so ask installers for monthly production estimates, not just a total.

• South-facing, unshaded roofs give the highest yield.
• East and west faces lose a modest share but suit morning and evening use.
• Winter output is small, so do not size expectations from December alone.

What should you check before you commit?

Compare the production estimates in at least three quotes, using the same assumptions. Check how exports are credited today and in writing. Ask what monitoring is included so you can compare real output against the forecast, as in solar system monitoring. Then see solar panels in Alberta for the broader checklist.

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