Sentences with phrase «rooftop rainwater collection system»
The structure is powered by an off - grid photovoltaic generator and a rooftop rainwater collection system.
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In addition, some of us were eating less meat, bicycling for errands and to meetings, one had a rainwater collection system, a couple had organic gardens, two had completely retrofitted their houses with thick insulation, good windows, heat pumps, energy - sipping appliances, and supplied their own electricity with lots of rooftop solar panels.