If you do have an Energi, and are wondering about electrical compatibility, you should be fine. The Energi only pulls about 3.25 kW from a 240V charger, and the chargers around here can supply 6kW or more.
Like fbov said, if you're not sure between Energi and Hybrid check for the charge port in the left front fender, but also the badging (Energi or Hybrid), the "EV" button on the dash, the trunk floor level higher than the folded-down seats.