Here's a nice chart for the US [1]. You are correct that because of colder climates European power demand tends to peak more in winter. I can't find a similar c

Here's a nice chart for the US [1]. You are correct that because of colder climates European power demand tends to peak more in winter. I can't find a similar chart to this (ideally broken down by country) but I did find this [2] > Even though it may seem counterintuitive due to their climate, Nordic countries are remarkably well-suited for PV installations. Solar irradiation levels during the long summer days, when the sun barely sets, make these regions perfectly viable for solar power generation. In fact, it’s a burgeoning industry that’s increasingly turning heads towards the north. > Solar PV cells operate more optimally at lower temperatures. Cold environments help maintain the cells’ operational temperature, allowing them to work at peak efficiency. The Nordic regions often enjoy strong sunshine, and when this is coupled with the reflective properties of snow, solar irradiance is significantly increased. A good example of this was during the first COVID lockdown when Western Europe saw record irradiance levels. [1]: https://www.eia.gov/todayinenergy/detail.php?id=42915 https://www.eia.gov/todayinenergy/detail.php?id=42915 [2]: https://ratedpower.com/blog/nordic-solar-success-story/ https://ratedpower.com/blog/nordic-solar-success-story/