Destatis added that 56 percent of all the energy produced in Germany during that six-month period (258.9 billion kilowatt hours) came from conventional sources such as coal, natural gas or nuclear energy.
According to the Wiesbaden-based statistical agency, this figure is 20.9 percent more than in the same period last year.
Meanwhile, the share of energy generated by renewable sources such as wind, solar or biogas fell by 11.7 percent compared to the same period in 2020, to 44 percent.
According to official statistics, the lack of wind during the spring in Germany caused the share of wind power to plummet 21 percent compared to the same period last year.
This led to the share of wind power in the total amount fed into the German power grid to fall from 29.1 percent to 22.1 percent.
Behind coal and wind power, natural gas was the third most important energy source for electricity production in Germany in the first half of this year, with a share of 14.4 percent, ahead of nuclear power (12.4 percent).
According to the current legal situation, Germany should completely abandon coal-fired power production by 2038 at the latest.