Performance Data

Original Palo Alto site with data is available here

Below you can see the same data, but I hijacked the frame and edited it a bit.

Palo Alto Demonstration Sites

Five sites, located in the City of Palo Alto, demonstrate a variety of photovoltaic products and applications, both in a residential and commercial setting. At each site, performance data is recorded, stored, and then posted to the internet for viewing. By monitoring these 5 sites we aim to learn more about the performance characteristics of photovoltaic systems and apply lessons learned to optimizing future installations.

The PV performance data from each site is available for viewing in tabular or graphic format. Monthly data may also be downloaded in ASCII format.

/ / <------ Just click here for a neat graph

NET = includes PV output, Building Load, and the NET Utility Meter result
PV+SolarIrradiance = PV output vs. Solar Irradiance (Plane of Array)
EV + Building Load = Electrical Vehicle charging, if installed, vs. Building Load
Enviro Data = Solar Irradiance (Plane of Array), Ambient Temperature, & PV Cell Temperature
PV+Temps = PV output, Ambient Temperature, & Cell Temperature

1. / /  
Three table options are available: 
1) Daily summary for 30 day period defined by the user

2) Daily summary for the last 30 days. 
3) Monthly totals. 

Demo Site

System Size [kW DC stc] (kW ACptc)

PV Mfr & cell type

Download Monthly

Ebenhoech Home

2.88 (2.568)

Astropower mono crystalline Si

ASCII- Ebenhoech

Gunn High School

5.52 (4.688)

Astropower mono crystalline Si


Gyr/Friedman Home


AstroPower mono crystalline silicon + Atlantis SunSlate mono crystalline Si [system has battery backup]

ASCII- Gyr/Friedman

Pennisula Conservation Center (PCC)


Solarex (BP Solar) poly crystalline Si


Slater Home

( 3.15)

BP Solar mono crystalline Si

ASCII- Slater

System Size: kW DC stc = how much DC power the modules will produce under full sunlight at standard test conditions (stc). kW ACptc = rated AC power output of the system after the DC power has been converted to AC power compatible with the utility grid, under PVUSA test conditions (ptc). Real world expected peak output should be about 70% of the kW DCstc rating. Various factors affect performance including: shading, orientation, cell temperature, and dirt.