I think it's the root of the problem: when you are running your 10K Watt resistance heater full blast it's very likely that every neighbor is doing the same at

I think it's the root of the problem: when you are running your 10K Watt resistance heater full blast it's very likely that every neighbor is doing the same at the same time (both because it's also cold for them and they also have electric heat as the whole neighborhood probably does not have a gas line).