Enter Values

Welcome to our community service PV performance predictor/benchmark page. By entering a few vital statistics about your PV system, we'll provide you output and system parameter values your system should be producing given available environmental conditions. Please enter what you can, and proceed -skip if no information is available. Click 'show benchmark' when done. svrw3

NOTE: By entering information in these pages, you are agreeing to public disclosure of your PV installation. Wattminder-Yang Associates will be held harmless by any visitor to this site. Special reward for registered and periodic visitors: you may get a free, indepth engineering report on your system when sufficient information becomes available.

Enter Values
Default values are appropriate for an array of 24 180 Watt panels located in Sunnyvale, CA.
Zip code (leave blank to enter your location)
City (leave blank to enter your location)
Site (name of site)
Time (mm/dd hh:mm, hh:mm), leave blank for current server time of (09/06 17:56:20 PDT)
Latitude (only used when city is unspecified)
Longitude (only used when city is unspecified)
Cell temperature (degrees centigrade)
Measured irradiance value (watts/meter²) Full sunlight is about 1000 W/m²
Total number of panels at site
Type of panel
Array tilt (degrees below zenith) Standard in California is 22:37:12
Array azimuth (degrees east of north)
Overall site efficiency
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