There was a study in germany on this.. 20 % are enough for 80 % yield.. Sorry only have german link: https://www.oekolandbau.de/landwirtschaft/betrieb/oekonomi

There was a study in germany on this.. 20 % are enough for 80 % yield.. Sorry only have german link: https://www.oekolandbau.de/landwirtschaft/betrieb/oekonomie/diversifizierung/agrophotovoltaik-acker-und-solarenergie-optimal-kombinieren/ https://www.oekolandbau.de/landwirtschaft/betrieb/oekonomie/...