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Publisher: Journals Gateway
The Review of Economics and Statistics (2023) 105 (4): 798–817.
Published: 11 July 2023
Abstract
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Evaluations of energy efficiency programs reveal that realized savings consistently fall short of projections. We decompose this “performance wedge” using data from the Illinois Home Weatherization Assistance Program (IHWAP) and a machine learning-based event study research design. We find that bias in engineering models can account for up to 41% of the wedge, primarily from overestimated savings in wall insulation. Heterogeneity in workmanship can also account for a large fraction (43%) of the wedge, while the rebound effect can explain only 6%. We find substantial heterogeneity in energy-related benefits from IHWAP projects, suggesting opportunities for better targeting of investments.
Includes: Supplementary data