a: Solar energy ~
b: low-grade ore
What:
"Solar energy is like the low-grade ore. The sun's rays must be "mined," or collected, and then transformed into
useful heat or electricity before they are worth anything. A solar energy system helps you get "free" solar energy, just as the mining equipment helps you get "free" gold. But, like
mining equipment, a solar energy system can be very expensive - perhaps more than the sun's energy is worth. "
Useful?
Writer: Buckley
LCC:
Where:
Date: Mar 4 2014 1:31 PM
# 5228 Critique Analogy