pollution free energy source

Now energy is produced from the following sources

• Coal -(Disadvantages: Pollution/Strip Mining)
• Natural Gas - (Disadvantages:Cost and Lack of Infrastructure)
• Hydro - (Disadvantages:Limited Availability/Environmental Concerns)
• Wind - (Disadvantages:Limited Site and Resource Availability)
• Solar Photovoltaic - (Disadvantages:Higher Cost)
• Nuclear – (Disadvantages:Waste disposal)

Among this power sources Solar PV (Photovoltaic) systems effectively deliver 10 Watts per square foot. Not one square inch of new land would be required to site PV. Theoretically, there are adequate residential, commercial, Government rooftops, and parking structures in California to power a substantial percentage of our State's electrical needs from solar.
At today's prices, a typical solar system costs approximately $6.00/watt, installed and has an operating life in excess of 25 years. For all intents and purposes, maintenance and operating costs are minimal.