Yes, the Nissan Ariya will be able to tow up to 1500kg. That's pretty good and enough to tow a small caravan. Electric cars actually make quite a lot of sense for towing - their instant pulling power means it should be a pretty easy and relaxed experience. As you say, though, it'd be interesting to see how much the range is hammered with a caravan in tow. Currently, only expensive electric SUVs like the Tesla Model X, Mercedes-Benz EQC, Audi e-tron And Jaguar I-Pace are rated for towing. We're not aware of any companies providing charging bays for tow cars with trailers.