FEEM working papers "Note di lavoro" series
2013 .082

Free Riding, Upsizing, and Energy Efficiency Incentives in Maryland Homes

Autori: Anna Alberini, Will Gans, Charles Towe
Serie: Energy: Resources and Markets
Editor: Giuseppe Sammarco
Tipo: Journal
Parole chiave: Energy Efficiency, Household Behavior, Energy Efficiency Incentives, Electricity Usage, Rebound Effect, Free Rider
Numero JEL: Q41, D12, H3
JEL: Energy Economics
Pagine: Volume 52, Supplement 1, Pages S30-S40
Data: 12/2015


We use a unique dataset that combines the responses from an original survey of households, information about the structural characteristics of their homes, utility-provided longitudinal electricity usage records, plus utility program participation information, to study the uptake of energy efficiency incentives and their effect on residential electricity consumption.  Attention is restricted to homes where heating and cooling are provided exclusively by heat pumps, which  are common in our study area—four counties in Maryland—and were covered by federal, state and utility incentives during our study period (2007-2012). We deploy a difference-in-difference study design. We find that replacing an existing heat pump with a new one does reduce electricity usage: the average treatment effect is an 8% reduction.  However, the effect differs dramatically across households based upon whether they receive an incentive towards the purchase of a new heat pump.  Among those that receive the purchase incentive, the effect is small or nil, and indeed, the larger the incentive, the smaller the reduction in electricity usage. Those that do not receive incentives reduce usage by about 16%. Our results appear to be driven by the numerous free riders in our sample and by persons who—inferred from their responses to survey questions—might be exploiting the subsidy to purchase a larger system and increase usage, with no emissions reductions benefits to society.


Suggested citation: Alberini, A., W. Gans, C. Towe, (2013), 'Free Riding, Upsizing, and Energy Efficiency Incentives in Maryland Homes', Nota di Lavoro 82.2013, Milan, Italy: Fondazione Eni Enrico Mattei.

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