Incentives & Rebates


Wachusett Meadows Wildlife Sanctuary

Princeton Municipal Light Department saves our residential and commercial/industrial ratepayers money and energy with Incentive and Rebate Programs through our alliance with NEXT ZERO and others—including our latest program: Connected Homes.

Get started with a Free Home Energy Assessment. Call the Toll-Free Hotline: 888-333-7525 to schedule it today, performed by The Center for EcoTechnology (CET) and NEXTZERO. Schedule your Home Energy Assessment online.

The Economic Benefits of Municipal Light Plants graphic

CET helps people and businesses save energy and reduce waste. For more than 40 years, the non-profit organization has worked with partners throughout the region to help transform the way they live and work for a better community, economy, and environment. CET "makes green make sense". Learn more about CET.

IMPORTANT NOTE ABOUT EV CHARGERS: PMLD is always concerned with your power quality and reliability. Installing an EV Charger will put an additional load onto the distribution system and could cause a power quality issue. Please let PMLD know if you have installed an EV Charger, or are planning to install one. PMLD will inspect your transformer and upgrade it if necessary, at no cost to you.

NEW! PMLD's Commercial & Industrial Program

We now offer attractive Rebate, Incentive and Energy Audit opportunities for Commercial and Industrial customers, including a new Prescriptive HVAC Program. Learn more at Next Zero, in our Commercial & Industrial Flyer, or by calling NEXT ZERO at 413-308-1311.



Learn more and apply online for NEXT ZERO Home Energy Audits and Rebates here.

Learn more about Rebates

  • Energy Star Appliances
  • Home Efficiency Audits
  • EVs and Plug-in Hybrids
  • Heat Pump Heating & Cooling Flyers
  • Connected Homes and WiFi Thermostats
  • Rechargeable Electric Yard Equipment


download  Energy Star® Rebate Form
download  Heat Pump Rebate Form
download  Home Efficiency Incentive Rebate Form
download  Rechargeable Electric Yard Equipment Rebate Form

FlyerS | Fact Sheets | VIDEOS

download  Home Energy Audits
download  Home Energy Audit Facts
download  Home Energy Audit Videos
download  Energy Star® Rebates
download  Air Source Heat Pump Assessments
download  4 Reasons to Replace Your Heating System with a Heat Pump System
download  4 Reasons to Replace Your Water Heater with a Heat Pump Water Heater 
download  Rechargeable Electric Yard Equipment Rebate


PMLd and NEXTZERO have Prescriptive HVAC Program for business. It's a fast track process for reviewing and implementing HVAC projects. This program is for customers who have identified HVAC improvement projects and have procured cost quotations from licensed installers. Read more at NEXTZERO's Princeton Commercial webpages.

download  Commercial & Industrial Prescriptive HVAC Program
download  Commercial HVAC Application



PMLD parters with NEXT ZERO and others, who offer a wide array of Rebates and Incentives to assist you with the costs of implementing a variety of energy efficiency measures.

PMLD is now offering a new program: Connected Homes. With Connected Homes, Princeton residential customers can better manage their smart WiFi-connected devices in their homes and save money, while reducing their carbon footprint.

download  Connected Homes Program Introduction
download  Connected Homes Overview Flyer
download  Connected Homes 3 Reasons to Enroll Flyer
download  Connected Homes WiFi Thermostat Incentives Flyer

GET More information about Connected Homes



EV Discount Incentives

(None currently available. Check back.)

Scheduled Charging: Monitor and Control the Charging of Your EV from your Smartphone!

PMLD has partnered with its energy efficiency program manager, NEXTZERO, to provide a Free or Discounted WiFi-equipped Level 2 Residential Electric Vehicle Charger to customers signing on to the NEXT ZERO Scheduled Charging Program.

Vehicle Type EV Charger Incentive
Full Electric Vehicle Free
PHEV with less than 15 kWh Battery Capacity $200 Off
PHEV with 15 kWh Battery Capacity or Greater $300 Off


download 5 Reasons to Drive an Electric Vehicle Flyer
download Cost of EV Ownership
download See if your EV Model is Compatible
external link to US Dept. of Energy Vehicle Cost Calculator Compare different EV Models

Contact your local dealer(s) regarding additional Electric Vehicle Discounts and Rebates.

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