TK Spektrum

Boilers may only be operated with fossil fuels until December 31, 2044. After this date, heating with fossil natural gas is no longer permitted. Gas boilers are therefore only possible after December 31, 2044 if they are operated 100 percent with “green gases”.
If a gas heating system is installed from 2024 onwards, the operator must ensure that

• from 2029 with 15 percent,
• from 2035 with 30 percent and
• 60 percent of the heat provided in the system is generated from biomass or green or blue hydrogen from 2040 onwards