As of July 13th, our solar array has been in service for one year. I am glad to share that its performance has exceeded our expectations.
The array provided over 128,131 kilowatt-hours of energy. This amounts to a little over 28% more energy than the 100,000 kilowatt-hours we estimated. The solar system has also provided about 85% of our capacity on the summer peak days. The graph on the right shows our headquarters’ hourly usage for our peak days in June. As we proposed in our Iowa Office of Energy Independence grant application, the solar array does an excellent job of tracking our office’s load. As the graph shows, on the hottest day in June, our load on the grid fell as the day got hotter. Our on-peak demand from the grid occurred about 9 a.m. and at 2 p.m., the time of the Cooperative’s peak for the month, the grid was only providing about 15 % of our capacity. The array has also reduced our “carbon footprint” by approximately 128 tons of carbon dioxide.