EU Policies and Regulation on CO2, Renewables and Energy Efficiency: A Critical Assessment of Recent Experiences - Green Energy and Efficiency: An Economic Perspective - page 37

Fig. 6 Planned ( blue ) versus estimated ( red / dotted ) trend in EU onshore wind power

Fig. 7 Planned ( blue ) versus estimated ( red/dotted ) trend in EU solar photovoltaic energy Source
Report from the Commission to the European Parliament, the Council, the European Economic
and Social Committee and the Committee of the Regions. Renewable Energy Progress Report.
COM [ 27 ], p. 175 nal. Brussels, 27 03 2013

In general terms, experience shows that systems which work for one type of
technology do not necessarily work for others based on very different cost levels or
levels of technological development. Empirical evidence also reveals that sup-
porting frameworks have in general been effective in promoting the roll-out of
renewable energies in Europe. However, enough priority has not been given to
ef ciency, which is set to become an increasingly important issue as the share of

renewable energies in the energy mix grows.
Premium systems in particular may be considered to have been effective in the
light of the expanding roll-out of renewable energies in European electricity sys-
tems. However, from the point of view of ef

ciency, there have been major

drawbacks. One very signi cant consequence of the disproportionate development

of some renewable technologies is the increasing need for support, which is funded
in most systems by electricity consumers (via the revenue collected from electricity
tariffs). This has increased the cost of the electricity supply even more in those