Solar electricity sounds awesome until you actually go to buy it... for 2000watt AC you are looking at around $5,000 before installation, and then there is maintenance, battery banks, etc.... In fact the idea that any large population can use solar or wind to get any meaningful amount of electricity is pure propaganda/fantasy, solar and wind combined provide like 1% of the worlds energy and the process to create solar panels is more damaging to the environment and humans than nuclear... If you have the $ to put solar on the roof of a home more power to you, its not a terrible investment and it could pay off many years down the road, but if you are thinking of it as a way of cutting costs of mining short term... think again