April 2020 shows how important the mix of different renewable energies is for investors: While the fine weather led to increased output from the sun, wind energy was below plan. There were also differences internationally.

Thanks to the good weather, the output of photovoltaic systems in Germany was around 39 percent above plan. "The same good weather caused a decrease of about 8.5 percent for wind energy," says Markus W. Voigt, CEO of the renewable energy specialist aream Group. "This shows once again how important the mix of energy types in a portfolio is for investors".

This also allows international diversification within portfolios: "In April 2020, Germany was clearly at the top of the European rankings with its solar up by 38 percent", says Voigt. "Italy followed with results between target and actual irradiation values. In contrast, Spain, which is otherwise very sunny, reported a drop of 16 percent in solar radiation. Here the production of photovoltaic systems was correspondingly lower.

The fact that renewable energies are a natural product is also shown by the deviation of the years among each other: In April 2019, the solar result in Germany was quite high at 15 percent, while in Italy a drop of nine percent was recorded at that time. "As strong as the fluctuations are between the years, the countries and also the renewable energy sources, in a well-mixed portfolio these values smooth out and become a calculable and profitable investment for investors," says Voigt.