SOLAR POWER SYSTEM PRODUCTION HISTORY
Location is 33.75, -118.33. Azimuth = 155 deg, tilt = 26 deg.
24 Panels: Kyocera Solar, Inc.:KC175GT
Inverter: PV Powered LLC:PVP4800
DC Rating 4.2kW STC, 3.72kW PTC
The dashed line is a geometric computation, with the varying sun angles with season & time.
Variations at any given date (note, 30-day average) are due to atmospheric conditions.
Note that the scale baseline is 10, not zero.
The graph shows a small loss of average performance over the first 15 years.
2008 was a standout in October, but a slouch in February.
2022 was variously more, and less, than 2008.
2023 so far has been plauged by cloud cover.
SOLAR POWER SYSTEM PRODUCTION LONGEVITY TREND
Overall, year 2008 achieved 75% of the geom calculation; while 2022 achieved 71%.
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Version: 2023 10 18 1600 by A. Cellier