10k kWh per year seems really low. Does that include heating?
This post has been an interesting eye-opener for me. Somehow I've never really thought about the numbers deeply, but, having a 100-watt lightbulb on for 8 hours is almost 1kWh. My and my partners' computers + home server, at a mix of wattages and uses but mostly left on a lot, are probably using 15-20kWh daily. That's... a lot of power.
The EU average is 3.7k kWh.