Most of the entries were built with recycled/reused materials and sport rainwater tanks and solar photovoltaic systems. Many of their owners use them to brew their own biodiesel, practice beekeeping, woodworking or horticulture. … street lighting is similarly highlighted, as is a hot water system that heats water directly at the source, ie, the tap or faucet, limiting hot losses in pipes and wasted water being run before hot water reaches the tap from a distant tank. …

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