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EVALUATING ENERGY EFFICIENCY: A DOMESTIC SOLAR HOT WATER PROGRAM IN NORTHEAST FLORIDA

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Date
2007-04-18
Author
Moore, Ben
Advisor
Weinthal, Erika
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Abstract
Energy efficient technologies are a major tool for reducing electricity usage as well as greenhouse gas emissions. Nevertheless, serious market barriers impede the diffusion of these solutions. Many utilities offer programs and incentives to surmount these barriers. However, few empirical studies exist that quantitatively document the impacts of such initiatives. This project investigates a utility rebate program aimed at encouraging the adoption of domestic solar hot water (DSHW) systems in northeast Florida residences. Four years of household consumption, temperature, and one year of block group level demographic data is analyzed using multiple and multilevel, or hierarchical, regression analysis techniques. Four estimators are developed to estimate the causal impact of the program. The first estimator utilizes a random selection of non-participating households within the utility’s service territory and a subset of participating households for that year to establish control and treatment groups. The remaining estimators represent a random effects model, a fixed effects model, and a mediating multilevel model of the causal effect of the program for the years 2003 through 2006, respectively. These latter models derive control and treatment groups from pre- and post-treatment cohorts of program participants. Each estimator exhibits particular strengths and weaknesses. In aggregate, they provide a bound for the average impact of DSHW technology on monthly household electricity consumption. The results of this analysis indicate a direct causal relationship between the adoption of DSHW and energy savings. In particular, it estimates a statistically significant reduction in monthly electricity consumption ranging from 71 to 118 kWh for the average household, corresponding to 3-8% of total usage. Finally, economic and environmental policy implications of these results are considered and indicate that financial incentives as well as other strategies are necessary to aid the diffusion of DSHW technologies.
Type
Master's project
Department
Nicholas School of the Environment and Earth Sciences
Subject
Domestic Solar Hot Water (DSHW)
Northeast Florida
Energy Efficiency
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https://hdl.handle.net/10161/276
Citation
Moore, Ben (2007). EVALUATING ENERGY EFFICIENCY: A DOMESTIC SOLAR HOT WATER PROGRAM IN NORTHEAST FLORIDA. Master's project, Duke University. Retrieved from https://hdl.handle.net/10161/276.
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This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

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