Monitor energy useage at the RJR Ranch, Pullman, WA (N46 40.558 W117 16.276 Elev: 2352 ft.) Equipment list: Sixteen Kyocera KC-130 solar panels, pole mounted in four groups of four panels. SMA 2500U power inverter in grid-tie configuration. System startup: May 19, 2008

Wednesday, July 2, 2008

Time connected to the grid: 16 hrs
Electricity produced: 18.20 kWH
Solar Energy: 650 (Langley's)
Utility meter reads: 2223
Weather: Clear & Sunny
Comment: Heavy electric car usage ... I average a couple of 20-40 mile trips per day. Basically, my PV system is providing all the power I need for the car, with not much excess left over. On May 19th, the "Utility meter" read 2226. Today it reads 2223. This means that since the beginning, I have produced 30 kWH of excess power beyond what was needed for car charging. (You multiply the meter reading x10.) The total power produced since start, however, is 611 kWH. This is about what an average house uses in one month.

For questions mailto: roger@RJRsolar.com

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