It's very lucrative for the Norweigan energy producers, because it allows them them sell electricity at much higher prices on international markets, but voters

It's very lucrative for the Norweigan energy producers, because it allows them them sell electricity at much higher prices on international markets, but voters hate it because they used to be in a small closed market with an abundance of electricity (low prices), but now they're in a large european market bidding for household electricity against Brits (directly) and Germans (indirectly), causing higher prices.