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Wind Turbines and Solar Tree_MG_6771.JPG
Vertical axis wind turbines and a solar tracking tree at the Zero Net Energy Center under construction near San Francisco, California.
Vertical axis wind turbines and a solar tracking tree at the Zero Net Energy Center under construction near San Francisco, California.
The East Bay
alternative energy
construction
green power
solar panel
solar power
solar tracking tree
urban wind power
vertical axis wind turbine
wind power
wind turbine
zero net