Reference : Photovoltaic solar panel in Wallonia: Estimating the rebound effect
E-prints/Working papers : First made available on ORBi
Business & economic sciences : Microeconomics
Photovoltaic solar panel in Wallonia: Estimating the rebound effect
Boccard, Nicolas []
Gautier, Axel mailto [Université de Liège - ULiège > HEC Liège : UER > Economie industrielle >]
[en] Rebond effect ; Solar PV ; Net metering
[en] In Wallonia (Belgium), the public support for residential solar photovoltaic panels has two interesting features. First, the subsidies for solar production, in the form of tradable green certificates, were particularly generous which encouraged households to have large installations. Second, the region used a net metering system to record power exchanges with the grid. With net metering, the meter runs backwards when power is supplied to the grid. But, if production exceeds consumption on a yearly basis, the production surpluses are freely available for consumption. In this context, we test for a possible rebound effect. Based on a large sample of residential PV installation in Wallonia, we observe in our data and estimations, that a large proportion of households oversize their installation to benefit from the subsidies and, later consume most of their excess production. The effect is highly significant and production surpluses are almost entirely consumed. There are thus evidence of a strong increase in energy consumption by residential PV owners.

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