From Renewable Energy World:
Recent advancements to address these challenges have included solar subsidies, third-party leasing options and clean energy-specific crowd-funding platforms. In concert with a precipitous drop in PV module prices in the last five years and notable economies of scale, never before has broad-based solar seemed so viable.
But no matter how durable the bucket, if the well is dry you can't drink the water. Only about one quarter of residential roof area is suitable for hosting an on-site solar system, according to the National Renewable Energy Laboratory. This means that 75 percent of the population, including renters and those with small or shaded roofs, cannot participate in the rooftop solar revolution. What options exist for the majority, and how does the solar industry successfully navigate this obstacle?
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Solar Gardens Institute http://www.solargardens.org