Renewable Energy Technology Assessments - Kauai Island Utility ...

Kaua’i Island Utility Cooperative
Renewable Energy Technology Assessments 9.0 Wind
Analyses yielded an approximate capacity factor of 34 percent at 50 meters for an
annual energy yield of 19 GWh. Figure 9-11 shows power consumption for a Thursday in
April 1996 with projected seasonal capacity factors for a 6.6 MW Anahola project. The
projected production from this site has a modest afternoon peak in all seasons, somewhat
following the load pattern.
Wind Capacity Factor
60%
50%
40%
30%
20%
10%
0%
Winter
Fall
Spring
Summer
Load: Thurs. April 4, 1996
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Figure 9-11. Diurnal and Seasonal Capacity Factor with KIUC Summer Loads and
Project Output, Anahola Area.
9.6 Cost of Energy
9.6.1 Capital Costs
Three general capital cost scenarios were developed: (1) Flat 6.6 MW, (2) Ridge
6.6 MW, and (3) Ridge 2 MW. The first assumed a relatively flat and accessible 6.6 MW
project site representing the Kalaheo and Poipu sites. The second assumed a 6.6 MW
ridgeline site to represent the Omao, Hanapepe, Anahola, and Maha’ulepu sites. The
third scenario assumed a 2 MW ridgeline site to represent the Kokee site. The main
difference between the flat and ridgeline costs analyses was that labor costs were
21 March 2005 9-21 Black & Veatch
60
50
40
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10
0
Load (MW)