Electric-plane startup Eviation Aircraft Ltd. has signed up two more customers for its all-electric commuter aircraft.

Both buyers are American and are recognized names in the aviation industry, Chief Executive Officer Omer Bar-Yohay said Thursday in an interview with Bloomberg.

With the latest additions, the total orders for the company's electric airplane are now 150.

Eviation’s plane, the Alice, has been designed to take 9 passengers up to 650 miles at a cruise speed of 240 knots. It is powered by a 900 kWh Li-lon energy pack and its service ceiling is 30,000 feet.Running costs will be about $200 per flight hour versus $1,000 for a turboprop, though the model will be slower than some conventional craft.

Eviation now expects its first flight next year rather than before Christmas as initially targeted, with U.S. Federal Aviation Administration certification slipping toward 2022.

Work is already taking place on installing charging infrastructure for initial customer

Cape Air, a regional airline with operations in New York and New England, announced an order at the Paris Air Show in June. Talks are underway with a fourth possible client in Australia, while the CEO has previously said that prospective customers include major U.S. carriers like United Airlines Holdings Inc. and JetBlue Airways Corp., which are interested in planes to feed their hubs.

Eviation has $200 million of funding from backers including Singapore’s Clermont Group, which bought at 70% stake this year, and needs a further $500 million to enter serial production.