Table 3.10 Operation and Maintenance Costs of the SPS (5000 MW) Harron and Wadle also estimated annual operating and maintenance (O&M) expenses for the space transport, space construction, and repair of the satellites and the ground receiving station. These were not adjusted in any way except for conversion to 1978 dollars (with a multiplier of 1.08). Total annual expenses (shown in Table 3.10) of $224.8 x 10$ 1978 dollars are equivalent to an annual charge of 5.7 mills per kWh of net electrical output. 3.3.2 Conventional Coal-Fired Power Plant with Advanced Flue Gas Desulfurization (H-S Coal) The capital costs for the reference system were based on EEDB costs,22 adjusted to reflect a 5.9% increase in the steam system, insertion of the Wellman-Lord sulfur removal system (and removal of the conventional lime treater), an additional heat exchanger to increase stack gas temperatures, and a larger turbine generator to accomodate higher internal requirements. Direct and indirect capital costs are estimated at $452.1 million and $90.7 million (1978 dollars), respectively. A contingency allowance of 7% is added to account for the conventional nature of the plant. It is anticipated that the owner will spend approximately 9.2% of the cumulative subtotal on expenses such as consultants, permits, and site selection, and an allowance for funds during construction over the seven-year construction period is
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