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Bergey Windpower Case Study
Pleasanton,
California (SE of San Francisco)
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Rural Residential System
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Ms. Marge Pearson installed a 10 kW Bergey Excel-S in 1985 to reduce her utility
bills from Pacific Gas & Electric (PG&E). The Pearson's live in
Pleasanton, California within a few miles of the Altamont Pass windfarm area, so
they enjoy a good wind resource. The wind turbine was installed while the house
was being built so her general contractor and electrical contractor did all the
work. One challenge was digging the trench for the wire run up the hill
behind the house. Another challenge was erecting the tower up on the
hill. To keep from having to take a crane up the hill the Pearson's chose
a BWC 80 ft. Tilt-up tower. By putting the turbine up on the hill the
Pearson's are tapping the best wind resource on their property. Since
installation the system has worked well with only a few minor electrical
problems. The Pearson's estimate that the wind system saves approximately
$175 per month on their utility bill. Since the system was installed when
state and federal tax credits were still available, the Pearson wind system has
already paid off its initial costs completely.
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