SAN JOSE, Calif. — The days of free Tesla supercharging are coming to an end.

The Palo Alto, California-based automaker said Monday it would phase in fees for using its fast-charging network. Teslas ordered after Jan. 1 will receive a 400-kilowatt-hour credit — good for roughly 1,000 miles — every year. Additional charging will cost users, although Tesla did not set a price. Existing Tesla owners should not be affected, the company said.

“There will be a small fee to supercharge, which will be charged incrementally and cost less than the price of filling up a comparable gas car,” the company said. All vehicles will come equipped with hardware necessary for fast-charging.

CEO Elon Musk hinted about adding fees for fast charging in May, saying the company could not afford to give free electricity to drivers with its $35,000 Model 3 sedan. The vehicle is expected to roll out late next year.

Tesla installed more than 4,600 fast-charging stations in its so-called Supercharger Network. The network stretches across the U.S. and can deliver as much as 170 miles of range in 30 minutes.

Introduced four years ago, the free stations became popular and regular stops for Tesla owners, creating lines and jockeying for charging spots.