[ferdek]

They also failed to grasp that outside temperature might not be the only factor affecting power consumed for heating, assuming we want to keep constant inside temperature. The most obvious is sunlight - when it's 0C outside, my home requires much less energy when the sun is shining through the windows and on the roof.

[Kbelicius]

Are you saying that EU saw more than usual amount of sunlight this past winter? Where can one find such data?

[WeylandYutani]

https://www.knmi.nl/nederland-nu/klimatologie/geografische-o...

[ferdek]

Which, if I read that right, indicates that for Netherlands, winter months in 2022-2023 had more sunlight than in 2021-2022?

EDIT: Another data point would be total solar energy production in winter divided by installed power, per month, in comparison to previous winter.