Tesla will be building a supercharger at the Mass Pike I-90 Westbound service plaza in Charlton, MA as indicated in the pin added to the Tesla supercharger coming soon map earlier this year. I believe the site plan is done and it's possible a pole for the utility service may already be in place to prepare for construction. As this is shown as Q1 on the tesla map, it's likely construction could start any time now.
Anyone seeing the pin on the Tesla map probably already concluded this, but has been confirmed by Tesla.
Anyone seeing the pin on the Tesla map probably already concluded this, but has been confirmed by Tesla.