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This paper presents a technology roadmap developed for energy efficiency at Bonneville Power Administration (BPA). The paper presents 8 technology roadmaps for energy efficiency: heat pump water heaters, heat pumps w/o resistance, evaporative cooling, LED lighting, industrial process improvement, integrated building design (passive strategies), smart appliances, demand response. The paper also describes how the technologies and roadmaps were put together
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Hoffman et al. (2006) studied this question.
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