| By: | 
Grossi, Luigi; 
Heim, Sven; 
Hüschelrath, Kai; 
Waterson, Michael | 
| Abstract: | 
The harmonization and integration of separate national energy markets to an 
interconnected internal European market is a top priority of the European 
Commission. However, as energy policy largely remains subject to national 
sovereignty, a higher degree of integration can cause unilateral national 
policies to harm interconnected markets. We investigate the impact of two 
distinct national reforms in Germany - the phase-out of nuclear power plants 
after the Fukushima incident and the expansion of renewables promoted by fixed 
feed-in tariffs and unlimited priority feed-in - on neighbouring countries. We 
find that the phase-out triggered price increases of up to 19 percent in 
neighbouring countries whilst the renewable energy support schemes caused a 
price decrease of up to 0.17 percent for each percent of additional generation 
from German renewables. We also apply a novel approach to estimate the degree 
of market integration and find large differences between neighbouring 
countries in a range from 14 percent to 99 percent. Our findings point up the 
need for increased efforts to harmonize national energy policies, but also the 
need to consider the impact of unilateral environmental measures on other 
countries' supplies in the context of a partially integrated and partly 
unilateral system. | 
| Keywords: | 
Energy,Electricity,Market Integration,Nuclear Phase-Out,Renewables | 
| JEL: | 
L51 L94 Q41 Q48 Q54 | 
| Date: | 
2015 | 
| URL: | 
http://d.repec.org/n?u=RePEc:zbw:zewdip:15072&r=ind |