Renewable energy production was mixed in August. Photovoltaic systems were exactly on plan, with Italy even above plan. However, wind power output remained weak, only 83 percent of the target was reached. This means that the buffer built up over the course of the year is also melting away.

"August was a very weak wind month", says Markus W. Voigt, CEO of aream group. "Until August 20, production in some regions was only between 40 and 50 percent of the expected target." However, the windy days towards the end of the month helped to bring the overall target achievement back up to 83 percent. "Looking at the year as a whole, the quota is 108 percent, so there is still a good buffer," says Voigt. However, this has been melting away for some time.

In terms of solar power production, Germany with its 100 percent target achievement is on a par with Spain, where 99 percent of the target was achieved. Italy, with 102 percent, was once again the leader in August. "Italy delivered above the target, even though the irradiation, i.e. the actual solar output, was actually around 1 percent below the target", says Voigt. This is also due to slightly lower temperatures than forecast. The resulting better ventilation and cooling lead to better production with the same amount of irradiation.

"Summer is naturally less windy and sunnier," says Voigt. Nevertheless, the differences are often astonishingly large. "Over the whole year, however, the values are always surprisingly close to the expected target. The more turbines are installed in Germany and Europe, the smaller the differences between the regions become. "In the top-down view, this applies to all plants, but also to every investor: A broadly diversified portfolio smooths the results," says Voigt. Thanks to regular income, returns and earnings can also be planned well.