Photovoltiac
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Blue Heron EcoHaus: Insulation, Air-Sealing, and a Solar Array
Double-stud walls filled with dense-packed cellulose plus a 6.2-kilowatt photovoltaic system promise long-term energy savings
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Goldman Sachs Is Our Best Bet Against Climate Change
Although it's not everyone's first choice as a White Knight, the financial giant can help transform the renewables market