Solar Panels

CMLP offers two rebate programs providing thousands of dollars towards the cost of installing solar panels at your home or business.  You’ll want to take advantage of both programs, if your system meets eligibility requirements. 

MLP Solar Program Rebate: Offers a one-time incentive of $1,200 per kW(DC) of solar photovoltaic (PV) capacity installed, capped at 50% of system cost or $30,000, whichever is less.  This incentive is funded through matching contributions of $600 per kW(DC) from CMLP and from the Massachusetts Department of Energy Resources (DOER).  Residential and commercial arrays of 25 kW DC or less installed by customers in good standing are eligible.  DOER extended the program so applications can now be submitted through 12/30/2020, and all projects must be completed by 12/30/2021. 

CMLP Solar PV Rebate: Offers an additional one-time rebate of $625 per kW(DC) of installed solar PV generation capacity, capped at $3,125 per service address.  Residential installations up to 167 kW AC and commercial installations of any size are eligible.  There is no expected expiration date for this rebate.

***IMPORTANT NOTE: If your property already has or you are considering installing a sub-meter - such as for an EV (electric vehicle), winter electric heating rate, etc. - please read this page and its sub-pages to familiarize yourself with the options and trade-offs when combining sub-meters with solar panels.***

Steps to Installing Solar

Here are the steps involved in applying for both rebates and installing solar at your home or business.  If you are applying for the CMLP Solar PV Rebate only, the following steps are not relevant for you: 1, 4.1, 7, 8, and 17 - 21.

  1. Learn about the MLP Solar Program, which is administered for CMLP by Energy New England (ENE). Click here for an overview of the program and steps for getting started.
  2. We recommend that you identify at least three solar installers from whom to solicit proposals for your new solar PV system.  You’ll find information to help you with this step at ENE’s MLP Solar Program website and at CMLP’s Lease/Buy/Choose an Installer webpage.  People who’ve already installed solar are also a good source of information about installer performance.  Check online reviews, talk with people you know, or ask CMLP’s Energy Specialist Pamela Cady (; 978-318-3149) to put you in touch with Concord homeowners or businesses who’ve installed solar.
  3. When soliciting proposals from solar installers, tell them you are interested in applying for an MLP Solar Program Rebate and the CMLP Solar PV Rebate.  Confirm that they’re familiar with the PV system and production meter design, installation and equipment criteria for the MLP Solar Program and the CMLP Solar PV Rebate and interconnection requirements outlined in the next step.
  4. Once you’ve signed a contract with a solar installer, work with them to complete the following documents needed to apply for an MLP Solar Program rebate
    1. MLP Solar Program Rebate documents required by DOER:
      1. MLP Solar Program Rebate Application (found here)
      2. Participant’s Agreement (found here)
      3. Proof of property ownership (deed or recent tax bill)
      4. Copy of contract between installer and homeowner / business owner
      5. Shade analysis
        (DOER-approved shading tools can be found here in Contractor Packet or Program Manual)
    2. CMLP Solar PV Rebate and interconnection documents required by CMLP:
      1. Residential or Commercial Interconnection Application
        (or Battery-Only Supplement for buildings with a pre-existing solar array)
      2. CMLP Solar PV Rebate Application
      3. CMLP Solar PV Rebate Terms and Conditions
      4. Residential or Commercial Net Metering Policy Acknowledgement
      5. Wiring diagram
      6. Specification sheets for all equipment
        (i.e. solar PV panels, inverters and energy storage systems, if applicable)
  5. Installer uploads all MLP Solar documents via an online portal.  They also bundle and send all CMLP solar paperwork via email to CMLP.
  6. CMLP staff reviews paperwork and sends signed copies to homeowner, installer, and ENE with approval if all requirements are met.  (Note: Current CMLP electrical distribution system limitations may preclude the installation of residential or commercial systems over 25 kW without an accompanying energy storage system.  Decisions are made on a case by case basis after engineering review.)
  7. ENE reviews paperwork, submits completed Rebate Request packages to DOER and notifies the customer, installer, and CMLP.
  8. DOER issues an Award Notification and notifies ENE.
  9. ENE notifies the customer, installer, and CMLP that the project has full Approval to Install 
    (Installer must file for separate permits with Concord’s Building Department).
  10. Solar PV panels installed on property.
  11. Town Electrical Inspector visits site to give approval.
  12. CMLP Electrician installs "send and receive" meter
    (a brief power outage is required; new meter installed next to solar meter; property owner does not need to be on site).
  13. CMLP Engineer signs Approval to Operate (on-site visit not usually needed).
  14. CMLP emails property owner & installer official Approval to Operate.
  15. Property owner begins generating their own power!
  16. Property owner receives one-time check by mail from Town of Concord for CMLP Solar PV Rebate (if rebate check requested rather than on-bill credit).  This arrives 4 – 6 weeks after Approval to Operate email.  (Note:If customer applied for both the CMLP Solar PV Rebate and the MLP Solar Program Rebate, separate checks for each rebate will arrive at different times.)  
  17. Installer uploads MLP Solar Program Validation Request documents here:
    1. Copy of CMLP’s Approval to Operate email
    2. CMLP interconnection agreement, with approval to operate signature (attached to CMLP email)
    3. Project Completion Form (provided by DOER upon reservation of award)
    4. Photographs of (1) the Locus meter powered on and (2) legible meter ID#
    5. Locus Meter Connection Form
    6. Change Request Form (if applicable)
    7. Invoice
  18. ENE and DOER review the Validation Request documents.
  19. DOER approves the MLP Solar Program rebate, with email notification sent to customer, installer, and CMLP.
  20. ENE invoices DOER and CMLP for the MLP Solar Program Rebate funds.  Once funds have been received, ENE mails MLP Solar Program rebate check to customer.
  21. ENE connects Locus meter and provides CMLP, installer, and customer with access.

If you have any questions, please contact:
                 Concord Municipal Light Plant
                 PO Box 1029
                 1175 Elm Street
                 Concord MA 01742
                 ATTN: Pamela Cady
                 (978) 318-3149