Sustainability

Solar PV Irradiance Versus DC Output

A nice clear day with very good irradiance levels all day. Comparing the DC output of the solar system (the yellow line), it can be seen there was snow or a heavy frost on the solar panels that prevented full power output until it melted off at about 10 a.m.

DC output

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Solar Thermal System Monitoring

On a day when the outside ambient temperature is 35 degrees, the water in the solar thermal tank is already 110 degrees!

Solar Thermal System

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PV System Info Feb. 26, 2012

Consistent irradiance levels, but current from string 4 falling off.

PV System Info Feb. 26, 2012

A look via the webcam shows the initial shading on string 4 caused by the higher roof

PV System Info Feb. 26, 2012

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PV System Info on Jan. 30, 2012

Good irradiance level, but the solar PV power output is very low. A look through the webcam shows snow cover still on the solar panels (see below).

PV System Info on Jan. 30, 2012

Snow cover is preventing power production from the solar PV system until the snow slides off the panels.

Zero energy green home with snow on roof

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PV System Info

A well-behaved solar PV system…irradiance levels high, PV current, and power levels high

solar PV system

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Geothermal System Info

Monitoring the zero energy green home's 4-well geothermal system

4-well Geothermal System

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WGRZ's Green Home Video

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Thank You to Our Donors

Click the links below to learn about the businesses who donated to the zero energy green home:

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