Earlier quoted context omitted.
Average power usage for a 1 person household in Germany is 1300 kwh/year (roughly, numbers vary, but not to a degree that it matters). That's about 150W sustained. So 1500W for a large sign, that's like 150 high power LED light bulbs, I guess that checks out. Anything that reduces ads in the public sphere is fine by me.
Not sure where this number comes from. Statistisches Bundesamt says it's 1,958 kwh. https://www.destatis.de/EN/Themes/Society-Environment/Enviro... Interestingly, for 2 person households they state 3,196 kwh and for 3+ person households 4,919 kwh. Energy consumption scales worse than I expected. I assumed there would be more synergy in shared households.
While we might not be close to the average consumption in Germany, because our house is quite new, I'm regularly wondering what other households are doing with that much energy.