A. United States
In 1988, there were 219-PV systems identified with a total installed capacity of 11 MW connected to utility systems [12]. Their size distribution is shown in Fig. 5, in which the largest plants appear according to segment size rather than total plant size. All these had been installed in the 1978-1988 period. Most installations over 5 kW are associated with federal, state, or utility demonstration projects. There are two significant exceptions, both privately financed: the 1.0-MW (rated) Hesperia-Lugo project installed in 1982 and the 6.5-MW (rated) Carrisa Plains project installed in 1984; both in California. The operating performance and experience with most of the larger installations have been documented well in the literature [13]-[23].