Rates vary by utility but generally offer lower distribution charges in colder months, encouraging broader heat pump adoption.
Each utility’s program is unique—contact your utility directly for details and enrollment links.
Eversource has more info and an online form to upload a photo of your heat pump’s sticker.
MassSave may have automatically enrolled you but does not seem to have done so for many.
Cool! Eversource too, also only a couple chargers and not ours. Though ours has a “PV divert” feature, which tries to only use excess production (if you hook up an MQTT topic with that info), and that saves on transmission charges at least.