Fuel price uncertainty has put the brakes on scrubber orders at Finnish technology company Wartsila.

"While the current pricing and availability of compliant fuels are supportive of investments in scrubber technology, uncertainty regarding future developments and limited delivery capacity for this year have delayed decision-making among some customers," it said.

Roger Holm, the president of Wartsila's marine solutions business, told TradeWinds that the company had sold out of scrubber slots for 2019.