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Solar Yield vs Temperature.

 
Solar Photovoltaic (PV)
Last Post by Toodles 57 minutes ago
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Toodles
 Toodles
(@toodles)
Famed Member Contributor
Joined: 4 years ago
Posts: 2748
Topic starter 31/05/2026 3:27 pm   [#3033]

The recent hot spell has taken its’ toll on energy production; though the spec. sheet for a solar panel may well show the percentage loss against elevated temperatures, it really comes home when the sort of temperatures we have been experiencing this last week or so occur. Our 8.1 kWp. array will often produce ~6.4 kW for the core times at this time of year (as indeed it has been doing today with external temperatures in the low 20’s C.). When the sun shines in a clear blue sky but the temperature is hovering at ~ 30 degrees or so C., then the highest output drops to ~ 5.2 kW during those same core hours. Admittedly ten of our 21 panels are ground mounted in the garden and I suspect don’t feel so much breeze as those on the various roofs and thus warm all the more. Should I send a request to the Met Office for full sun from 05:00 - 20:00 but with a cap on the temperature of perhaps 24 degrees C?😉 Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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