German wind and solar output for the first half of 2013 was 36.7 TWh, a drop of 6.4% compared with a year earlier, German renewables research group IWR said Tuesday.
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Based on data provided by transmission system operators and published on the EEX transparency platform, Germany's wind turbines generated 22.4 TWh of electricity in the first quarter, down 9.5% from H1 2012, while solar panels generated 14.3 TWh, just 1% less than a year earlier, but to be seen in the context of still strong additions to solar PV capacity over the past 12 months.
January and February, in particular, registered low solar generation due to below-average hours of sunshine at the beginning of the year, while wind output in January 2012 reached a monthly record not repeated this year.
In June, however, there was a pick-up in renewable generation, with wind output up 18% year-on-year to 3.4 TWh, while solar output in June was up 16% at 4.3 TWh, it said.
June also saw another milestone for renewables with 60% of total electricity consumption covered by wind and solar during the afternoon hours of Sunday June 16, when combined wind and solar output reached almost 30,000 MW.
"There is currently no other country in the world where wind and solar installations can account for over 60% of the electricity supply," renewable energy institute IWR said in a statement.
Germany's installed wind capacity is forecast to rise to 33 GW by the end of 2013, while solar PV capacity now stands just below 34 GW, making wind and solar Germany's largest sources of power, when measured by installed capacity.
However, German electricity consumers may have to pay a quarter more for subsidies paid to renewable power producers in 2014 with the annual sum paid to operators of renewable energy installations expected to rise to Eur23 billion ($30 billion), German media reported last week.
Under Germany's EEG renewable energy law, feed-in-tariffs for renewable power producers, are financed through the so-called EEG-Umlage with only energy-intensive industrial exempt from the surcharge.
Chancellor Angela Merkel said June 12 that the expansion of renewable energy is creating problems and that a reform of the renewable energy law is a priority after the elections in September.