Stay there. I assume anyway that contract prices will only play a minor role this winter. From October onwards, there is already the surcharge of 2-5 cents, and it is quite likely that the price cap will be lifted due to shortages. In this respect, a contract commitment will probably be of little use to you.
PS: Incorrectly reported meter readings are, to my knowledge, punishable by law
I didn’t mean incorrectly reported meter readings, but simply a lower consumption declaration and thus the need to pay additional charges.
Example: You consume 18,000 kWh per year but only report 10,000 kWh to lower the monthly installment and pay the rest later if you actually consume more. (Which you already know anyway.) This way, you don’t risk losing the already paid installments if the service provider goes bankrupt after a price increase. That was the case with BEV. Many customers paid an installment they never actually consumed but never see their money again.