Denver EV charging
 

We'll be somewhere around Denver in August for the Chris Stapleton concert.

Hertz have a Subaru Solterra for about half the price of an equivalent ICE SUV.

I have an I-Pace here so I'm used to the mechanics of using and EV but obviously unfamiliar with EV charging in the US and any chains or apps that would be useful.

Any tips?

Download the app PlugShare and configure it for the Solterra. This will give you a very accurate and crowd-sourced map of all available EV charging stations that will be compatible with your EV.

Once you find a few near your hotel and other points of interest, download the compendium apps for those charging stations. The most popular ones appear to be Chargepoint, Electrify America, EVgo, and Blink--but there are probably 5-6 more providers in the metro area, each with their own app. Most charging stations allow you to just use a credit card at the station without using the app, too.