They paid to decommission fossils early, and amortized it over the future. So it's going to drop like a rock once those debts are paid and the last plants shut down, with fewer remaining customers and lighter load on the grid. But until then, consumers will be paying higher bills.
Similar to the UK - See item 18. https://committees.parliament.uk/writtenevidence/141240/html...
That is not what your link says?
Perhaps they did not mean point 18, but I found it interesting anyway.
The existing gas infrastructure represents a large amount of taxpayer investment, not due to be paid off until 2070. But it’s estimated that there won’t be any users of that infrastructure beyond 2050.