Concord Municipal Light Plant


Concord Municipal Light Plant (CMLP) is proud to be a part of the Concord community. When creating this municipal utility, the founders believed that local control would mean better utility service. CMLP strives to provide its customers with an excellent customer service experience.

Energy Saving Rebates and Programs

Energy Assessment Free – once every 3 years 50% – prices based on building area.
LED Bulb Rebate Cost of bulb, up to $1 per bulb.
Capped at 50 bulbs per 12-month period.
Cost of bulb, up to $1 per bulb.
Capped at 60 bulbs per 12-month period.
High Efficiency Lighting Program (HELP)   The lessor of: $1,000 / kW reduced demand or 50% of project cost.
Capped at $50,000 every 3 years
Weatherization – Oil, Electric, Propane and Wood Heated Homes 50% of project costs.
Capped at $1,000 per 12-month period
Weatherization – Natural Gas heated homes and businesses See Mass Save or call them at 800-232-0672 See Mass Save or call
National Grid at 978-408-0701
Air Source Heat Pump Up to $4,000 per 12-month period Up to $10,000 per 12-month period
Ground Source Heat Pump Up to $7,500 per 12-month period Up to $6,250 per 12-month period
Heat Pump Water Heater $185 or $750 per 12-month period $185 or $750 per water heater, for up to five HPWHs per account, per 12-month period
Commercial Heating Equipment & Controls – Natural Gas heated businesses   See Mass Save or call
National Grid at 978-408-0701.
Time of Use (TOU) Rate  
Electric Vehicle (EV) Level 2 Charger $250 per car  
Electric Vehicle (EV) Off Peak Charging $5 – $10 monthly bill credit per car.  
Solar Panels $625 per kW (AC) of installed capacity.
Capped at $3,125 per address. Participation in the Municipal Light Plant (MLP) Solar Rebate Program. 
$625 per kW (AC) of installed capacity.
Capped at $3,125 per address.
Controlled Water Heating $19.66 per month  
Reducing the Summer Peak Demand

A free, on-site home energy assessment will identify the sources of energy waste driving up your heating and electricity bills. If you heat with any fuel source other than natural gas, CMLP’s energy auditor, Energy New England (ENE), will examine your home’s energy systems and produce an information-packed, photo-filled report tailored to your home explaining recommended measures, detailing cost savings, and showing your home’s scorecard compared to statewide averages. The assessment includes an analysis of your utility bills and covers home heating and cooling systems, water heating equipment, appliances, thermostats, lighting, and weatherization needs, as well as energy saving tips. In addition, each energy assessment comes with the installation of LEDs to replace all your incandescent and compact fluorescent light bulbs by the auditor for FREE.

For homes not heated with natural gas, call 888-772-4242 to schedule your Home Energy Assessment or SIGN UP today.

Natural gas heated homes should contact MassSave (866-527-7283) for an energy assessment.


CMLP covers 50% of the cost of full-scale energy assessments with its energy assessment provider, Energy New England (ENE). Please call CMLP’s Energy Specialist at 978-318-3149 for details.


CMLP offers a $1 rebate per light bulb for the purchase of LEDs. Residents may receive the rebate for up to 50 bulbs per 12-month period and businesses for up to 60 bulbs per 12-month period. *Note: Incandescent and LED bulbs can go into regular trash. All fluorescent bulbs contain mercury, which is toxic, and therefore must be recycled. All fluorescent bulbs (whether compact CFLs or linear fluorescents) can be recycled at the following nearby locations:

  • Concord Public Works – 133 Keyes Rd: compact CFLs and linear fluorescents
  • CMLP – 1175 Elm St: compact CFLs and linear fluorescents

CMLP’s High Efficiency Lighting Program (HELP) helps you manage your operating costs and add value to your business by upgrading to more energy efficient indoor and outdoor lighting and controls. CMLP will rebate the lessor of: $1,000 per kW reduced demand or 50% of project cost, capped at $50,000 every 3 years.

To learn more about HELP, please visit CMLP’s web page.


Weatherization (insulating & air-sealing your home) is the best first step to improving the comfort of your home and reducing your heating costs and carbon footprint.

Natural Gas-Heated Homes
MassSave has many more generous rebates than those provided by CMLP. Contact the state at MassSave’s website or at (800) 232-0672.

Homes not heated with natural gas (electricity, propane, oil, wood):
CMLP will rebate 50% of eligible project costs, capped at $1,000 per 12-month period, per household. See CMLP’s links to appropriate forms.


Air-Source Heat Pump

Air source heat pumps have been used in warmer climates for decades, and due to a recent technology revolution are now a great heat source in New England’s cold climate. These clean heating and cooling technologies can greatly reduce your greenhouse gas emissions, reduce your energy costs, and improve the comfort of your home or business.

Rebates of up to $4,000 are available to CMLP’s residential customers and up to $10,000 per commercial account.​

Learn more about ASHP Rebates

Ground-Source Heat Pump
Ground-source heat pumps (GSHPs) can provide cost-effective and energy-efficient heating, cooling, and water heating. GSHPs utilize the nearly constant underground temperature to deliver heating and cooling. Although they require electricity to operate, efficient GSHPs can provide the same amount of heating for 65% – 75% less than traditional electric resistance heating. Rebates of up to $7,500 are available for residential customers and up to $6,250 for small businesses. Before making a purchase, make sure to review the eligibility criteria and other program information.

Learn More About GSHPs
Apply Now for a GSHP Rebate

Heat Pump Water Heater
CMLP rebates residents and commercial accounts for the purchase and installation by a licensed plumber of a Heat Pump Water Heater (HPWH). Residents or commercial customers  purchasing a HPWH for new construction or to replace oil, natural gas, or propane-fired water heaters are eligible for a $750 rebate. Residents or commerical customers purchasing a HPWH to replace an electric resistance water heater are eligible for a $185 rebate. Please see full eligibility criteria described on the application form. 

Heat Pump Water Heater Rebate Application


Natural Gas heated businesses in Concord are eligible for multiple rebates from MassSave. Contact Dan Sancomb, National Grid’s Senior Commercial Energy Efficiency Representative, at 978-408-0701 or to learn more.


CMLP’s residential Time of Use Rate charges lower than the basic 3-tier residential rate during off-peak hours and higher than the tiered rate during peak hours. Off-peak hours are 10pm to noon on weekdays and 24 hours a day on weekends (118 hours per week). On-peak hours are noon to 10 pm on weekdays (50 hours per week). By shifting much of your electric usage to off-peak hours, you can work with CMLP to reduce peak demand charges, helping keep all customers’ bills lower. Peak demand charges refer to the extra cost of electricity during times when there is the greatest demand for electricity throughout the regional electric grid. Please note that if you sign up for the Time of Use Rate, you must stay on it for a minimum of one year. To learn more about CMLP’s Time of Use (TOU) Rate, please view the Residential Time of Use Rate.


Are you considering the purchase of an electric vehicle? Do you already own one?  CMLP has two programs that can help offset the cost of charging your EV.

Electric Vehicle (EV) Level 2 Charger Program
If you chose to install a Level 2 Charger for your electric vehicle, CMLP offers a $250 rebate towards the cost of purchase and installation. Learn more at

Electric Vehicle (EV) Off Peak Charging
Under certain circumstances you may gain more value in installing a Time of Use meter for charging your electric vehicle at night, or you may be better off signing up for CMLP’s EV Miles Program, which gives you a $5 – $10 monthly credit on your electric bill. This decision depends on a number of factors, including your pre-existing meter setup and whether you want to use the Time of Use rate for your entire house or your garage.

Learn more about each of your options by visiting CMLP’s Electric Vehicle Charging page. For any questions regarding EV charging, including a custom analysis of your EV charging options, contact Laura Scott at 978-318-3102 or

If you only want to charge during off-peak hours, consider having an EV charger on a second meter. Although this option does require the installation of a second meter at an expense to you, the second meter would be on CMLP’s Time of Use (TOU) Rate. The TOU Rate is beneficial if you charge during off-peak hours for at least 50%-60% of your usage on that meter.

You also have the option of changing your current house meter to a TOU Rate. This would require being mindful of all electrical usage in your house (lights, computers, EV charging stations, TVs, clothes washers, dishwashers, etc.) to avoid usage during peak times. As noted above, please be aware that the TOU Rate schedule must be taken for a minimum of one year.

By shifting your EV charging to off-peak hours, you can help reduce CMLP peak demand charges to help keep all customers’ bills lower. Peak demand charges refer to the extra cost of electricity during the times when there is the greatest demand for electricity throughout the regional electric grid.

Learn more about each of your options by visiting CMLP’s Electric Vehicle Charging. For any questions regarding EV charging, contact Customer Service at 978-318-3101 or


For solar photovoltaic (PV) panel installations, CMLP offers residents and businesses rebates of $625 per kW (AC) of installed capacity, capped at $3,125 per address. On average, the time from interconnection application submittal to approval from CMLP to operate the PV system after panels are installed is 2 months. Visit CMLP to learn the stages involved in the process and link to required documents.


Are you looking for ways to save on your electricity costs? Do you have a traditional electric resistance hot water heater? If so, you can cut your electricity costs by participating in CMLP’s controlled water heating program. CMLP currently has a network of more than 360 Concord residents enrolled in this program.

A switch will be installed on your electric water heater that allows CMLP to turn it off daily (for approximately 4 hours) when buying power from the regional grid is the most expensive. [Note: CMLP recommends a minimum hot water tank size of 50 gallons (larger is better) in order to provide you with enough stored hot water for your needs during the times when your water heater is being controlled.]  Each month, CMLP will give you a credit of $19.66 on your bill for your participation. This credit represents the monthly costs avoided by CMLP when controlling your water heater.

To sign up for the program, contact Customer Service at 978-318-3101 or by email. You can also sign up for daily email updates about CMLP’s load management strategy to help you plan your energy use for the day.


CMLP hopes you will join its efforts in helping to reduce the Town of Concord’s summer electrical peak and the cost of electricity to all Concordians. By reducing electricity use during peak hours, everyone benefits from not only lower electric rates but also a cleaner environment, as the least efficient electric generating plants operate during peaks to provide enough capacity.

Thirty percent of your electric bill is directly related to the amount of electricity Concord uses for just one hour during the entire year. That one hour, known as the peak demand hour, typically occurs on a hot weekday afternoon during the summer months (June to September) between 12PM and 6PM. Make sure to read about the 2016 Google Group Results to learn more.

How You Can Help
CMLP asks you to voluntarily reduce your electricity use when a peak electric demand hour is predicted. Please follow CMLP on Twitter (@CMLPmedia) or join the Google Group (send an email with the subject and body blank) to receive notifications for when a peak demand hour is expected. CMLP will send a message to the Google Group, its Twitter followers, and the Town of Concord’s website the day before CMLP believes a peak is POSSIBLE or LIKELY. At that point, you can decide to voluntarily reduce your electricity use during the predicted peak.

Here are ways you can reduce your electricity use during the peak:

  • Turn up AC thermostats several degrees
  • Close all windows and draw shades
  • Refrain from using pool pumps, washers, dryers, and dehumidifiers
  • Cook dinner on the grill, or plan a cold picnic supper
  • Use a timer for appliances to avoid operation during peak hours

If possible, it is best to minimize electricity use 2 hours before and after the predicted peak in order to have a better chance of hitting the actual peak demand hour. CMLP will do its best to minimize the number of POSSIBLE and LIKELY calls that are made during the summer.

To learn more about summer peak electricity demand, please visit CMLP.