
482 Principles of Sustainable Energy Systems
© 2008 Taylor & Francis Group, LLC
added a series of SEGS power plants with total generating capacity of 354 MW
e
. Figure 8.26
shows a schematic of the SEGS VIII and IX plants. Table 8.11 provides information about the
solar eld, power block, and other general information about SEGS I and SEGS IX plants. All
of these plants use solar energy to heat the working uid and natural gas as the auxiliary
fuel to achieve the desired temperature. On average, 75% of the energy is obtained from
the sun and 25% from natural gas. With power plant electrical conversion efciencies on
the order of 40% and the so