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German weekend power prices under rising pressure

  • Märkte: Electricity
  • 21.05.13

London, 21 May (Argus) — Falling weekend prices in the German day-ahead power market have added to the pressure on summer forward contracts in the wholesale market, as the market reassess the impact of rising wind and solar electricity on prices during low demand periods.

The June and third-quarter 2013 contracts have come under increasing pressure in the German power wholesale market and have tested new contract lows since the start of May.

Falling prices and expectations of more ample supply in neighbouring markets have weighed on summer forward contracts, but falling weekend prices in the German day-ahead market also added to the pressure.

Weekend prices have averaged €30.42/MWh on the Epex Spot exchange where the majority of the country's renewable power output is sold. It is lower than average weekend prices of €37.39/MWh from January to mid-May last year, €46.69/MWh over the same period in 2011 and €35.13/MWh in 2010.

Pressure on weekend prices has increased in particular since the end of April, with the last three weekends averaging just €15.26/MWh on the exchange. German solar power production has ticked higher as sharply rising solar power capacity in recent years has more than offset below average sunshine hours in the past few weeks. Solar power made up over 10pc of the country's generation mix in weeks 19 and 20, data from German research institute Fraunhofer show.

The below-average sunshine hours so far this spring suggest that the German day-ahead market may yet fall further.

Sharply lower prices in the EU emissions trading scheme (ETS) have added to the pressure on prices in recent weeks, because it allows generators to keep some of their lignite and coal-fired plants on line, which they would have otherwise ramped down over the weekend to avoid losses during low price periods.


Inverted prices

The push towards rising solar power production has resulted in an increasing number of days in which the peak-load day ahead settles below the base-load price. Peak-load prices have settled below the base-load on 13 out of 40 weekend days so far this year in the day-ahead auction on the Epex Spot exchange. This includes four out of six weekend days so far in May.

Peak-load prices settled below the base load on 10 days by mid-May and 30 days overall last year, which compares with just eight weekend days in 2011 and five in 2010.

Germany added around 7.5GW of new solar power capacity in 2011, around 7.6GW in 2012 and close to 800MW in January-March this year. Inverted peak-load prices will likely become even more common during low demand periods in the future, with Germany expected to add more renewable power capacity each year.

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