What are you doing to use this amount of energy? I DO have an always on computer, an old fridge, a laundry machine (no dish-cleaner, though, I do that by hand) and electric water heating. I use ~290kWh/month in a 2 person household. That costs me to around 80 Euros / month. Most of my consumption stems from the electrical water boiler and stove (daily cooking).

In Germany heating is most often and depending on where you live done with gas, oil or district heating plants (in cities). Electrical heating has pretty much been phased out (you'll find electrical "storage" heaters in very old apartments only).