Journal
RENEWABLE ENERGY
Volume 170, Issue -, Pages 1081-1095Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2021.02.031
Keywords
Solar water heating; Residential; Household; Consumer adoption; Barriers
Funding
- California Energy Commission [PIR-15-002]
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Solar water heating in California has a long history but faces barriers to widespread adoption, primarily due to users' prevalent disappointment in energy savings and bill reductions, as well as high rates of technical problems.
Solar water heating provides domestic hot water with lower greenhouse gas emissions compared to more typical natural-gas water heating. Solar water heating has a long history, particularly in places where the climate is favorable, such as California where state-backed incentive programs have been successful in creating small bursts of adoption. However, widespread adoption of solar water heating has not occurred in California despite these conditions. This research surveyed 227 single-family households with solar water heating across the state of California to understand their motivations and experiences, and draw implications regarding barriers to adoption. The survey explored households' experiences across five stages of adoption, as outlined in Rogers' Diffusion of Innovation theory: Knowledge, Persuasion, Decision, Implementation, and Confirmation. Findings revealed challenges at each stage. Most notably, prevalent disappointment in lower-than-expected energy and bill savings (31%) and high rates of technical problems (41%) appear to be the most significant issues. (c) 2021 Elsevier Ltd. All rights reserved.
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