Does water stay hot longer if boiled on the stove or in an electric teakettle vs boiling microwave?

Boiling water in an electric teakettle is the most energy-efficient method and typically retains heat the longest.

When heating water:

- Stovetops can lose heat energy to their surroundings.

- Microwaves heat water unevenly and inefficiently and cool rapidly due to energy loss during the microwaving process.