1. Greenhouse gas emissions fell 8.7 percent in 2020;German Federal Environment Ministry and the Federal Environment Agency,2021
2. Announcement of the guideline to subsidize the sale of electrically powered vehicles (environmental bonus) [In German: Bekanntmachung der Richtlinie zur Förderung des Absatzes von elektrisch betriebenen Fahrzeugen (Umweltbonus)];German Federal Ministry for Economic Affairs and Energy,2020
3. 2020 Sales in Europe: Electric cars and plug-in hybrids on the rise;Kane,2021
4. Germany kicks in another 100M for wallbox subsidies; 400M total now;Congress,2021
5. Another 100 million Euros for Wallbox subsidies [In German: Weitere 100 Millionen Euro für Wallbox-Förderung];German Federal Ministry of Transport and Digital Infrastructure,2021