Tibber is now available in Germany 
. (In addition to Norway and Sweden): https://www.home-assistant.io/integrations/tibber/
If you use this link to signup for Tibber, you get 50 euro to buy smart home products in the Tibber store: https://invite.tibber.com/6fd7a447
(You might need the latest dev version of Home Assistant to get it to work in Germany)