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A Hawaii utility is putting the brakes on rooftop solar installations. Is it the start of a power company backlash against solar energy?
Fire crews are reporting trouble with roof-mounted photovoltaic panels: in building fires, they block access and create a shock hazard.
The Apollo solar roofing system for asphalt shingle roofs is made up of lightweight modules that use silicon solar cells to convert sunlight to electricity to generate up to 52 watts per module.
At just 12 pounds, these solar roofing modules don't require structural reinforcement and stilll resist wind uplift.
The WaterShed house took top honors in the overall competition.
AllEarth Renewables. The AllSun Tracker combines PV collectors, inverters, and controls with a ground-mounted, dual-axis tracker that uses GPS to follow the sun across the sky, producing up to 45% more energy than a standard fixed system, the firm says.
Concerns about spray foam; passive-house rift; deck failures; and more
Cost and complexity are the two main reasons you don't see a photovoltaic array on every rooftop in America (except in Seattle).
A look at the techniques used to add skylights and thermal solar collectors to a foam-core roof.
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