Rivian Automotive Inc. said it will now sell its electric delivery van designed for Amazon.com Inc. to other customers, a move to boost revenue from fleet operators as consumer demand for battery-powered cars slows.

Shares of Rivian Automotive rose Monday after the company said it would start selling its all-electric delivery vans to other companies besides Amazon.com. Rivian shares were up 3.4% at $12.90 in midday trading on Monday,

Rivian’s electric van is now available to be purchased by anyone with a commercial fleet, the automaker said today. For several years, Rivian’s van was exclusive to Amazon. Now, the platform on which the e-commerce giant based its delivery van is open to anyone with a fleet of commercial vehicles and some money to burn.