Table II. Development of Crystalline Solar Cell. 2. Cost of Solar Cell The cost of terrestrial-use solar cells has been cut to less than l/2Oth of the initial cost in the early days in Japan, following the subsequent rise in demand and the development of manufacturing techniques. The cost has reached about ¥1,000 per watt. Production capacity Fig. 1 is increasing to about 10 MW per year, that is 1,000 times that of the early days of production. Fig. 1 shows the actual and projected cost learning curve for terrestrial solar cells. The curve is drawn on the expectation for future development according to the guidelines of the ‘Sunshine Project'. The symbol © of Fig. 1 shows the results for solar cells made from single crystal in the Japanese market, and the symbol @ shows the predicted cost learning curve of the
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