Low cost solar cells

To make a significant impact on the total National energy supply by any form of solar energy utilization, two basic conditions will have to be met: 1). The systems will have to be installed over an adequately large area, and 2). The systems will have to be sold at an adequately low price to permit such large scale instalation without upsetting the economic system. The second statement means, that complete photovoltaic systems, which will be in competition with other methods of generating electric power such as coal fired or nuclear plants will have to be sold in the range of 20 to 100 $/m²of receiver area based on current values. The annual production rate required to achieve significant impact within 20 years is around 500km², a million times the current production rate.