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Welcome to the Bring Your Own Charger® program!

At this time, enrollment is closed.

Sagewell is working with the Massachusetts Department of Energy Resources to better understand EV charging behavior. Specifically, we are studying the effectiveness of programming vehicles to charge overnight, as well as the resulting impact on electric demand and any additional carbon emissions savings than can be achieved.

You can earn $25 or $50 by programming your EV to charge overnight.

To enroll, you will need:

  • A plug-in electric vehicle with an in-car charging timer (nearly all EVs have this) OR a smart charger with programmable timer

  • Your VIN (vehicle identification number) OR charger make, model, and serial number (if you have one)

  • A picture of your smart charger’s or vehicle’s charging timer programmed to charge overnight


Sagewell's Bring Your Own Charger® program provides you with a $25 incentive in exchange for you agreeing to the following:

  • On weekdays, charge overnight at any time between 10 p.m. and noon the next day.

  • On weekends, charge at any time between 10 p.m. Friday and noon on Monday.

  • Provide a picture of your smart charger’s or vehicle’s charging timer programmed to charge between 10 p.m. and noon during weekdays.

  • If you have a ChargePoint or eMotorWerks charger and supply your device’s serial number, you will receive an additional $25 incentive.

Click the button below to enroll, or see the FAQ below.


- What is the BYOC?

Electric vehicles are great for many reasons, but if everyone with an EV charges their car at the same time, particularly in the hot summer months, the strain on the electric infrastructure, as well as the financial costs, can be enormous. The Bring Your Own Charger program is a way to manage EV charging so that the electrical strain occurs during hours when appliances like heating/cooling devices, washers/dryers, and water heaters are not running.


-Can I enroll in BYOC even if I don’t have a Level 2 (240-volt) charger?

Yes! EV drivers can join regardless of the charging level of their home charger.


-Why do you need my vehicle's VIN? Isn't that private information?

VINs do not contain any personal information about the driver of the vehicle, only general information about the car itself. Every VIN is publicly available, and there are a number of online VIN look-up services. We only use your vehicle's VIN to verify that it is a plug-in vehicle and is eligible for the program.

-Where can I find my vehicle's VIN?

The easiest place to find your VIN is on your registration or title. It is also printed on all vehicles, often where the dashboard and front windscreen meet, or on the inside driver door panel.


-Where can I find my charger’s serial number?

If you have an eMotorWerks charger, the serial number is a 28-digit number found on the side of the device, as well as in the eMotorWerks app if you’ve connected the charger to WiFi. If you have a ChargePoint charger, the serial number is a 12-digit number found on the bottom of the device, as well as in the ChargePoint app if you’ve connected the charger to WiFi.

-My family has more than one EV. May I enroll each EV in the Program?

Yes! Each enrolled EV is eligible for the $25 (or $50) incentive.

-How do I program my car?

Visit for instructions for common EV models. If you are still having trouble, contact Sagewell at 617-963-8141, or email

-Why do you only want the serial number of ChargePoint and eMotorWerks chargers?

We have relationships with those manufacturers, and they will give us access to your charging data with your permission. We use the charging data to verify the accuracy of the Bring Your Own Charger algorithms. You are welcome to use any brand of home charger you like.