Norway has a fiscal deficit every year, in order to cover the deficit we're allowed to spend a couple percent of our holdings in the Oil Fund to. To my understanding, this is done by selling assets on a monthly basis in exchange for Norwegian currency by Norges Bank. [0]

One could argue that the government would not be able to offer subsidies on EVs without that option.

0: https://www.norges-bank.no/en/topics/liquidity-and-markets/F...