London (Platts)--23Feb2015/940 am EST/1440 GMT

German day-ahead power prices remained at their lowest level this month Monday as wind power output above 10 GW boosted supply ahead of a dip in wind mid-week, sources said.

Baseload power for day-ahead delivery was last heard OTC at Eur33/MWh, Eur5.60 above Monday's closing price last Friday, but still the lowest for working-day-ahead in OTC trading this month, Platts data showed.

Tuesday peakload last traded at Eur36/MWh, 60 euro cents below Monday's price on Friday, the lowest in day-ahead OTC peakload power since January 28, the data shows.

Epex Spot settled Tuesday above OTC at Eur34.64/MWh baseload and Eur39.17/MWh peakload.

Further out on the prompt, week-ahead baseload was heard trading at Eur31.05/MWh, compared with a Eur32/MWh close for this week last Friday.

Wind output on Tuesday was forecast to remain above average levels at around 14 GW, down from a revised 16 GW forecast for Monday after actual production peaked above 20 GW early Monday morning, according to sources.

Solar power output for Tuesday was forecast to rise to around 4 GW for average peakload hours, according to another source.

However, solar levels remain below last year's levels during week 9 with actual solar generation reached 20 GW by February 24 last year, EEX transparency data showed.

Germany added a record 5 GW wind capacity in 2014 to lift installed wind power capacity above 39 GW, compared with 38 GW of solar PV capacity after new solar installations in 2014 dropped to their lowest since 2007.

Also on the supply side, nuclear availability was pegged at 11.9 GW Tuesday, but was set to fall steadily over coming weeks with the 1.3 GW Grafenrheinfeld reactor in so-called stretching mode for economic reasons ahead of its planned decommissioning in May, some seven months ahead of its licence expiry date set by Germany's nuclear phase-out timetable.

Lignite availability was pegged at 19.1 GW Tuesday with hard coal plant availability rebounding to 13.2 GW, according to EEX transparency data.

On the near curve, March baseload dropped 25 euro cents to Eur31.95/MWh.

Further out on the curve, Calendar 2016 baseload shed another 10 euro cents to Eur32.60/MWh. The contract fell 5% last week after reaching a 2015 high above Eur34/MWh last Monday.

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