Compare to other energies
• Cost of electricity from coal-burning plants is anywhere between 8-20 cents/kWh, while photovoltaic
power generation is anywhere between $0.50-1/kWh.
• Does not reflect the true costs of burning coal and its emissions to the nonpolluting method of the
latter.
• Underlying problem is weighing efficiency against cost.
- Crystalline silicon-more efficient, more expensive to manufacture
- Amorphous silicon-half as efficient, less expensive to produce.