Nebraska Solar Demo

 

 haskell solar with names

Six solar panels consisting of panels from 4 different manufacturers make up the solar array at the Haskell ag lab in Northeast Nebraska

Nebraska Solar Demonstration 

Six solar panels stand at the Haskell Ag Lab in Northeast Nebraska.  Live output is recorded and broadcast live. 

View live solar data 


 

Sanyo 210  Amorphous Silicon Rated Efficiency 16.7%  

Trina 225  Polycrystaline Silicon Rated Efficiency 15%    

Solon 230  Mono and Polycrystaline Rated Efficiency 15.9%   

Sharp 224  Polycrystaline Silicon Rated Efficiency 13.7%

Sharp 224

Sharp 224


Haskell Solar Array Economics 

Total Cost

1.39 kilowatt solar array

$3.25 per Watt installed
(larger = lower cost per Watt)

Total cost $4,517

Estimated Production

  • 1.39 kW x 5 hour per day x 365 days per year x 0.80 (system efficiency factor) = 2,029 kWh per year
  • PV Watts (pvwatts.nrel.gov) = 2081 kWh per year

Actual Production

2,114 kWh per year June 2012 to May 2013
2,241 kWh per year June 2013 to May 2014
2,025 kWh per year June 2014 to May 2015
2,180 kWh per year June 2015 to May 2016

Simple Payback

2,140 kWh (4 year ave) x $0.10 per kWh = $214 in electricity
Payback $4,517/$192 = 21 years

 

REAP grant and fed tax credit                   Federal tax credit only
Payback = 11.4 years                                    Payback = 14.4 years
Rate of Return = 7.2%                                   Rate of Return = 4.7%
Net Present Value = $1,688                       Net Present Value = $835

 System Life Expectancy 30 Years
   (Rate of Return and Net Present Value calculated at 30 years)