Electric Company Boundaries: NECo and BVE

Who can tell which side is NECo and which side is BVE? If you know which utility went HPS first it will help you a lot. All the lights are 250W HPS.

Even though these two were separate at one time, they're both now run by National Grid, so this isn't really a true boundary, though everything is still separate since that's the way everything was laid out back in the day. NGrid doesn't still keep boundaries in their new construction though, obviously.