Hello I didn't find a similar question, but if it's redundant, please erase this thread. The instant electrical power is not constant (because of the consumption and of the production). So, how the instant power is adjusted in the electrical grid? There is a similar entry, but it has several open questions: -> I have heard that in case of surplus, the electrical power is derived to ground, but this seems weird to me. Is it true? -> They talk about the speed of the electrical power; how fast is the electrical power transfer? (post10). Thank you in advance :) Greetings.