Energy Conservation – Reducing energy consumption and becoming more efficient in using existing energy sources
In order to understand the term "energy conservation," we need to first understand the word "conservation".
Conservation – using resources carefully (spread them as carefully and as little as possible).
The jam conserve (conservation) was spread thinly because there was so little left in the jar.
So energy conservation is spreading or using the energy as carefully and as sparingly as possible.
Ways to spread our limited energy so it is more carefully used include: