求翻译：电力系统的功能是将能量从某种自然存在的形式转换为电的形式，并输送到各个用户。能量很少以电的形式消费，而是转换成其他形式，如热能、光能和机械能。是什么意思？

Power system's function is to convert energy from one form of naturally occurring forms of, and to the individual user. Little energy in the form of electricity consumption, but converted to other forms, such as light and heat energy, mechanical energy.