Fueled not just by electrons but also by government subsidies, electric and hybrid cars counted for more than half of new registrations in Norway last year.

Norway is the undisputed world leader on electric cars, run almost exclusively by the nation’s abundant hydro power. The country has expressed a goal of phasing out the sale of fossil-fuelled vehicles by 2025.

Norway’s lead on electric cars has been driven by its government backing it with a range of incentives and perks as a way of meeting its climate change ambitions. Buyers do not pay import tax or value-added tax on plug-in cars, taking a big chunk out of upfront costs. Running costs are lower compared to ICE cars in Norway because electricity is cheaper than gasoline. Road tax is reduced, too, dropping to zero next year.

By and large, Norwegian electric car owners do not pay the variety of city emissions charges, tolls, and ferry fees and that other drivers in the country face. As icing on the cake, they can park their electric cars for free in many areas, even bypassing traffic by driving in some bus lanes.

READ MORE: Norway On Its Way To Becoming a ‘Fully Electric’ Society

With perks like that, it’s easy to understand why the take rate on electric cars is so high in Norway. Even excluding hybrid cars which generally only have a small electric motor that cannot be plugged in, electric car sales in Norway rose to 39 percent in 2017, up 10 percent from one year ago.

Norwegian publication BilNorge handily details the sales of individual models, showing the BMW i3 to be the top electrified seller last year in Norway, with over 5,000 units hitting the road in 2017. A total of 4,748 Model X crossovers were delivered, in addition to 3,712 Model S sedans. Nissan’s Leaf found 3,374 new homes.

It’s unclear whether this rate of growth will continue, as the government had planned to introduce an end to tax exemptions for the heaviest electric cars (by heaviest, they mean a car’s listed curb weight). This proposal was quickly dubbed the “Tesla Tax” as it would have only affect the Model S and Model X.

That strategy was quickly abandoned after a large public outcry and speculation the new rule would scupper sales of electric family cars – both existing models and upcoming ones like the Jag I-Pace. The uproar certainly underscores the public’s infatuation with electrified vehicles.

It’s important to note that deliveries of Tesla automobiles generally come in waves, meaning that a December boatload of Musk’s Finest showed up just in time to boost the country’s total number of electric car new registrations. Still, Norway’s accomplishment is no small feat, and the nation should be applauded for its forward thinking.