Fig. 4From: Governance of sustainability in the German biogas sector—adaptive management of the Renewable Energy Act between agriculture and the energy sectorFinancial incentives for biogas in Germany from 1990 to 2017, as stipulated in the consecutive Renewable Energy Acts (REA) (see Tables 3, 4, 5, 6, 7 and 8 in Appendix for more details). Basic remuneration means remuneration from electricity production only without further premiumsBack to article page