Solar energy is a clean, renewable energy source. Once a solar plant is built there is no fuel cost only maintenance. Why does solar energy not play a bigger role in energy production today?
A) The technology to make solar energy is not yet available.
B) Environmental groups are against solar energy as a power source.
C) The cost of maintenance still is more expensive then all other energy technologies.
D) The original cost of a solar plant still takes too long to be recovered by future savings.