It absolutely is standard in germany: German Environment Agency does it this way [0] Fraunhofer Society does it this way [1] German Ministry for Economic Affai

It absolutely is standard in germany: German Environment Agency does it this way [0] Fraunhofer Society does it this way [1] German Ministry for Economic Affairs and Energy does it this way[2] Agora Energywende (important think tank) does it this way [3] AG Energiebilanzen does it this way [4] [0] https://www.umweltbundesamt.de/bild/strommix-in-deutschland https://www.umweltbundesamt.de/bild/strommix-in-deutschland [1] https://www.ise.fraunhofer.de/content/dam/ise/de/documents/publications/studies/daten-zu-erneuerbaren-energien/ISE_Stromerzeugung_2018_Halbjahr.pdf#page=9 https://www.ise.fraunhofer.de/content/dam/ise/de/documents/p... [2] https://www.bmwi.de/Redaktion/DE/Downloads/Energiedaten/energiedaten-gesamt-pdf-grafiken.pdf__blob=publicationFile&v=38 https://www.bmwi.de/Redaktion/DE/Downloads/Energiedaten/ener... [3] https://www.agora-energiewende.de/service/agorameter/chart/power_generation/11.07.2019/14.07.2019/ https://www.agora-energiewende.de/service/agorameter/chart/p... [4] https://ag-energiebilanzen.de/ https://ag-energiebilanzen.de/