Do Solar Panels Produce More Electricity In Cold or Hot Weather?

Do solar panels produce more electricity in cold weather or hot weather?

You could consider this a trick question.  Photovoltaic solar systems operate most efficiently in cold weather, but the longer sunny days associated with hot weather generally produce more kWh per average day.  So although your solar panels may work “better” on cold winter days, you will probably get more solar production through the hot summer months.

With the recent cold weather, many of Royal Solar’s commercial solar installations are operating very efficiently.  The panels are maximized and the inverters are humming along.  However, the short winter days only allow this peak efficiency to last for a couple hours per day.

So when do solar systems actually produce the most electricity?

Typically, the longer cool days in the spring are when solar electric systems produce the most electricity.

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