The title of this post, is the same as that of this article on Reuters.

This is the first paragraph.

United Airlines said on Tuesday it would buy 100 19-seat ES-19 electric planes from Swedish start-up Heart Aerospace, as the U.S. carrier eyes battery-powered aircraft for regional routes.

It looks fairly conventional, except that you don't find many four-engined propeller driven aircraft these days.

This page on the Heart Aerospace web site, gives more details of the company and its plane.

I suggest you read the FAQ, as the last five sections give details on the use of the planes, as short-haul airliners and island hoppers.

What's A Typical Route That The ES-19 Will Fly In 2026?

In answer to this question, the FAQ says this.

Our early adopter market will be very short flights where there is high demand. This will include island-hopping and flying over mountainous terrain, where the flight distance is significantly less than the road routes available.

I can certainly see these planes and other 19-seaters  island hopping and on cross-country routes all over the British Isles.

Other 19-seater Aircraft You May Have Flown

I have only flow in one and that was an Embraer Bandeirante from Norwich to Stavanger.

Others will have flown in a De Havilland Canada Twin Otter or the Britten-Norman Trilander.

Conclusion

This well-backed Swedish design could be a very widely-used airliner, if it meets the ambitious in-service date of 2026.

 

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