Sustainably generate the energy you use is Reason # 4
SPUFFER:
Solar Power
Utility
For Finns'
Electric
Rides
A Washington State Private Small Electric Power Utility located
on the roof of our home
Residential
sustainable energy investment incentives utilized:
► 30% Federal
sustainable energy tax credit on system costs
► Washington State sales tax exemption for solar generated
electricity systems
► $0.15/kWh Washington
State solar electricity incentive until 2020 for each kWh generated
► Whenever kWh of electricity being generated exceeds that
being used in our home,
excess electrons (kWh) are sent to the grid and
our meter runs backwards (net metering)
● The information shown
below is near-real-time and historical data
for the energy production of our PV system.
(Click on "Today's Power time-lapse"
at bottom of "Overview" panel to access animation controls.
Click on
► control to animate power
production for each panel
– sampled at 15 minute intervals.)
● We symbolically placed SPUFFER in service on 9/11/2011
– first electricity charged EVs on 9/1/2011).
● Panel array consists of 14
Sanyo HIT 225W PV panels for a total nominal capacity of 3.2kW.
●
Diagram below is an accurate panel layout on our due south facing,
20 pitch roof.
● Total Lifetime Energy kWh (below) x 4 = the number
of miles SPUFFER's electricity has powered our EVs.
● We drive our two EVs less than a combined total of 12,000
miles annually.
● We no longer own an internal combustion engine vehicle.
● Seattle area averages 80 - 90% of the annual solar energy of Los
Angeles because of our long summer days.