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Energy is the conserved quantity associated to time-translation invariance and represents the work a system is capable of doing. Use this tag for questions about energy, and consider adding the [energy-conservation] tag if it is specifically about its conservation.

4 votes

Does it require more energy to maintain higher temperature in the same environment?

Then measure your energy usage to maintain that temperature at different outside temperatures. … You will find (instinctively) that the colder it is outside, the more energy is required to maintain the internal temperature. …
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