Option 1. EV Charging on Second Meter

(see meter socket wiring diagrams for 200 amp and 320 amp systems here)

If you install a fast charging 240v/50 amp circuit, you can opt for a second meter to allow for off-peak charging at a lower rate. Your electrician can give you an estimate to install extra wiring and an additional meter socket, which can add a small additional cost to the expense of installing a 240 volt circuit. Working with CMLP's electrician, your electrician can advise you on the best placement of the meter socket. Your electrician can contact our electrician, Marty Boermeester, at 978-318-3141, with questions and to meet at your home before or during the job to discuss the work planned.

Although you would need to pay your electrician for the extra wiring and meter socket work, CMLP would install, for free, the second electric meter itself and this meter would be on the Time Of Use (TOU) Rate. This rate allows for continued off-peak charging at a lower rate than the standard Residential Rate:

• Off-peak charging
  • rate of $0.15757 / kWh (includes Capacity, Transmission, Distribution, and Energy charges)
  • 10PM until 12PM noon (14 hours), Monday through Friday
  • all weekend hours
  • total of 118 hours per week
• On-peak charging
  • rate of $0.27612 / kWh (includes Capacity, Transmission, Distribution, and Energy charges)
  • 12PM noon until 10PM, Monday through Friday
  • total of 50 hours per week

Please note that CMLP does not control when your EV charges. You must program the off-peak charging times in your car or home charging station. Be aware that if you charge during on-peak hours, the on-peak rates will apply. This rate schedule must be adopted for a minimum of one year.  

Once your electrician completes the work, the Town Building Department inspects the wires and contacts CMLP’s Metering Division to let us know the site has passed its inspection. Next, our electrician verifies the work and installs the new meter for EV charging.

Solar Panels

If you have or plan to install solar panels, and wish to adopt the TOU Rate for EV charging, see here for special considerations.

If you have an EV and you’ve already adopted the TOU Rate for EV charging, and you have or plan to install solar panels, see here for special considerations.