The Pipistrel Alpha Electro is a new all-electric battery powered small plane that's apparently primarily intended for use as a flight school trainer.
Batteries are heavy though, so the Alpha Electro only has a 20 kWh battery pack, which is enough for an hour of flight (plus an additional 30 minutes of pants-shitting terror if you dip into the reserve). But that's apparently enough time to make it useful as a trainer, and it's less expensive to operate and maintain than a combustion-powered plane.
Sounds compelling, but I wonder how much of a future there is for battery-powered aircraft. Unless batteries get a lot lighter or a lot more power-dense, it doesn't seem like they'll be feasible as a power source for anything that needs to stay in the air for more than a couple of hours, or that needs to carry lots of people or cargo.