(Links to carbon decision, updates prices, adds wind peak)
FRANKFURT, Sept 13 (Reuters) - German year-ahead power prices rose 2.3 percent to a new 3-1/2 year of 35.8 euros ($42.70) per megawatt hour (MWh) on Wednesday afternoon, extending earlier gains as carbon rallied and coal, gas and oil also gained.
* Power in recent days has been boosted by firmer gas, oil and coal prices. German Cal ‘18, a benchmark for the European market, is now 28 percent above its 2017 low in March.
* In addition, carbon emissions rights which generators must hold to cover their output, were responding well to signs of EU resolve to reform the market, which boosted power.
* December 2017 expiry EU carbon allowances climbed 4.2 percent to 7.16 euros a tonne - an eight-month high - after the European Parliament adopted a plan to protect carbon prices against fall-out in the event of a hard Brexit.
* France’s year-ahead power contract, which is less liquid than its German counterpart, gained 1.6 percent to 42.05 euros/MWh.
* Coal cif Europe for 2018 delivery, another important price element for a large proportion of generators, added 1.9 percent to $82.15 a tonne, taking prices back to levels last seen in May 2014.
* Spot power prices rose on an anticipated decline in wind power, which will tighten supply.
* German Thursday baseload power delivery was up 57 percent at 23.5 euros/MWh.
* The price of French day-ahead power was 13.5 percent higher at 31.5 euros/MWh.
* German wind turbine output on Thursday will lose 3.1 gigawatts (GW) from levels expected for Wednesday to 25.3 GW over a 24-hour period, Thomson Reuters data showed. This would still be half of all installed capacity.
* Utilities had said overnight that hourly levels on Wednesday might breach the current German hourly wind record of 38 GW, but latest indications on the EEX bourse’s data pages showed an intraday peak of 32.4 GW was reached in the morning.
* Germany has nearly 50 GW of total installed wind capacity.
* In eastern Europe, Czech Thursday power was 4.9 euros or 26 percent higher at 23.7 euros. The Czech year-ahead contract rose 50 cents or 1.4 percent to 35.9 euros/MWh. ($1 = 0.8384 euros) (Reporting by Vera Eckert; Editing by Susan Thomas and Mark Potter)