Small-scale renewable energy applications can contribute considerably to global climate protection while playing an important role in improving the quality of life in the developing world. Solar water heating (SWH) is particularly promising; it is one of the simplest and least expensive ways to harness renewable energy and can be comparatively cost-effective for reducing greenhouse gas (GHG) emissions. With financial and other types of support via carbon trading mechanisms, SWH technology could be a valuable component of climate change mitigation efforts.
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