Powering Europe - European Wind Energy Association

Windpower’scontributiontofirmpower
As a consequence a large diversity can be seen in
the estimation of the capacity value in the practice of
system planning at European level by national TSOs,
for example in the annual System Adequacy Forecast
[SAF, 2010]. There is a need to establish and utilise
a harmonised method for wind power capacity credit
82
assessment in European generation adequacy forecast
and planning, in order to properly evaluate the
contribution of wind power to system adequacy. This
would also constitute a basis for valuating wind power
capacity in the future liberalised electricity market.
fiGURE 5: CaPaCity CREDit of winD PowER, REsUlts fRoM EiGht stUDiEs. thE iRElanD EstiMatEs wERE MaDE foR two
PowER systEM ConfiGURations; with 5 Gw anD 6.5 Gw PEak loaD [holttinEn, 2009]
Capacity credit
45%
40%
35%
30%
25%
20%
15%
10%
5%
Capacity credit of wind power
0%
0% 10% 20% 35% 40% 50% 60%
Wind power penetration as % of peak load
Germany
Mid Norway 3 wind farms
Mid Norway 1 wind farm
Ireland ESBNG 5GW
Ireland ESBNG 6.5GW
UK 2007
US Minnesota 2004
US Minnesota 2006
US New York on-off-shore
US California
fiGURE 6: inCREasE in CaPaCity CREDit in EURoPE DUE to winD EnERGy ExChanGE bEtwEEn thE CoUntRiEs in thE 2020
MEDiUM sCEnaRio (200 Mw, 12% PEnEtRation) [tRaDEwinD, 2009]. UCtE2 inClUDEs fRanCE, bEnElUx, GERMany, switzERlanD
anD aUstRia
Capacity credit [MW]
30,000
25,000
20,000
15,000
10,000
5,000
0
UCTE 2
Top ten wind countries
All European countries
No wind energy exchange Smoothing effect
Relative Capacity Credit,
percentage of installed capacity
16%
14%
12%
10%
8%
6%
4%
2%
0
UCTE 2
Top ten wind countries
All European countries
No wind energy exchange Smoothing effect
Powering Europe: wind energy and the electricity grid