for goodness sake, please do Pareto Analysis, and
focus on the top few, not the bottom few.
focus on vital few, not trivial many.
room heaters & air conditioners use tons of electricity.
lightings, computers (except bitcoin miners) use relatively low electricity.
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When I talk about turning off the lights, I am talking about "wasted power".
Using a heater or A/C unit when needed is not wasting power. Leaving the lights on in a room you are not using is "wasted power".
Even bitcoin mining is not "wasted power", because the mining is performing a useful function for the purpose it is being used. Lights on in an empty room serves NO purpose.