A press release on the relevant legislation can be found here (in German): https://www.bundesregierung.de/breg-de/aktuelles/energieprei...
The most important section in this matter reads in English translation as follows:
"From January 2023, industrial customers will receive 70% of their natural gas consumption in 2021 from their suppliers at a guaranteed 7 cents per kilowatt hour. For heat consumption, the price will be capped at 7.5 cents per kilowatt hour, also for 70% of consumption in 2021. For the remaining consumption, industry will pay the regular market price."