For some magical reason, all electronic devices you personally operate consume no actual power from the grid or from batteries. They will function flawlessly without actually requiring a power supply, will never need to be charged, will cost nothing for the electricity bill, cannot power-throttle, be affected by blackouts or need a change of batteries.

You can no longer operate anything at all that uses natural gas for power or for (non-waste) heat. This includes certain boilers, clothes dryers, models of car, and anything else that does exist or will exist using natural gas.