A 70-year-old electrical power transformer that has kept the lights on in Plainfield and a handful of neighboring towns since the 1980s has undergone a significant $7.2 million upgrade by Eversource.
On a sweltering July day this past summer, straphangers trying to get home on the J train were left to sweat it out on the platform. A 60-year-old power transformer in the subway system’s ...