Energiewende und Übertragungsnetzausbau: Sind Erdkabel ein Instrument zur Steigerung der gesellschaftlichen Akzeptanz des Leitungsbaus? Eine empirische Untersuchung auf Basis der Kontingenten Bewertungsmethode

Transmission network development has led to protests throughout Germany. Many studies present underground cables as a means to increase public agreement to transmission line construction and network development. This paper verifies this thesis analyzing the willingness-to-pay of private households for underground cable employment, which allows for a distinct analysis of strategic behavior and opportunity costs that is omitted in classic questionnaire designs. The results of a contingent valuation study conducted in November and December 2012 in four regions of Germany, which are affected by transmission line development in different ways, are presented. At first glance, an analysis of 1.003 household responses confirms common findings with a majority of households favoring underground cables (about 60 %), albeit preferences vary strongly between sample regions. Willingness-to-pay, however, relativizes this result. A near share of 50 % of households voting for underground cables is not willing to accept an increase in electricity prices to finance respective projects (free riders). The fact that positive willingness-to-pay does not correlate positively with increasing lengths of underground cables in 60 % of cases underlines that underground cables are not supported unconditionally. All-in-all, a flat public approval of underground cable technology cannot be presumed based on WTP-evaluation. Preferences about underground cables and corresponding WTP are explained with demographic characteristics and attitudes using regression models. Fundamental thoughts on energy- and environmental policies do not serve to explain responses. Instead, regional factors and subjective opinions on how to finance such kind of infrastructure measures influence preferences for underground cables.