Belmont Light is no longer accepting applications for the solar rebate program.

Non-rebate interconnection applications will continue to be accepted.


The chart above represents the total amount Belmont Light has pledged to the MLP Solar Program. Because this is a joint program, funds may run out prior to the full expenditure of Belmont Light’s allotted pledge.

As part of the Municipal Light Solar Rebate Program (MLP Solar Program), Belmont Light has pledged funds, which the Department of Energy Resources (DOER) will match. Approved projects will receive one-time rebates of up to $1.20 per watt off the cost of the installed system and awards will be dispensed on a first-come, first-serve basis while program funds last or June 30, 2021, whichever comes first. Any installation work done prior to rebate approval is done at your own risk.

A valid email address must be provided for DOER to contact the customer. If customer does not have an email address, customer should designate someone to be a contact for the DOER, Belmont Light and ENE.

By participating in the program, the owner of a facility receiving a rebate agrees to provide its RPS Class I Renewable Energy Certificates (“RECs”) to Belmont Light for the lifetime of the facility.  Monitoring will be done by a separate production meter to be installed by the solar contractor at the time of system installation. All RECs acquired through the Solar Rebate Program will be retired by Belmont Light to achieve a higher level of renewable energy in our portfolio.

NOTE: Applications must be received by Energy New England by June 30, 2021 to be considered for funding.


  • Program is available to residential and commercial customers in good standing
  • System must be owned by the customer
  • System must be installed between 90° and 270°
  • System size is capped at 25kW DC-STC (Systems larger than this can be installed with permission from Belmont Light but will not be eligible for any rebate funds)
  • Shade reports must show annual access is at least 80%
  • Preferred inverter manufacturers: Solar Edge, Sunverge or Pika
  • All systems must have a Locus Production Meter (Model: R-LGate-CatM1-ENE) installed

Shade Analysis Requirements

Per the DOER’s Program manual, the following shade analysis will be accepted:

  • Solmetric SunEye
  • Solar Pathfinder
  • Wiley ASSET Software
  • Aurora software with LIDAR data available
  • Bright Harvest
  • Scanifly

Please contact the DOER at DOER.MLPSolar@mass.gov prior to submitting a shading analysis that is not listed above. During application submit DOER approval along with shading analysis.

Application Instructions

The rebate application process will follow the standard interconnection process with the additional steps and documents required:

  1. Submit Interconnection Application and supporting documents to interconnections@belmontlight.com
  2. Application reviewed and approved by Belmont Light (typically within 10 business days of when application fee and all required documents are received by Belmont Light)
  3. Once the Interconnection Application is approved by Belmont Light, applications must be submitted directly to ENE online. Submit the following documents along with the approved Interconnection Application:
  4. After review and approval, the application is sent to DOER for processing (typically takes 6-8 weeks for processing)
  5. Upon approval of the rebate, customer and contractor will receive a Rebate Reservation Notification
  6. After completion of installation and inspection, please submit the following with the Certificate of Completion:
    • Project Completion Form (provided in Rebate Reservation Notification email)
    • Locus Meter Connection Form
    • Installation invoice
    • If applicable, Change Request form (provided in Rebate Reservation Notification email)
  7. Completed documents will be gathered and sent along with Permission to Operate letter to ENE and DOER for processing
  8. Upon receipt of all documents, rebate check will be issued to customer within 90 days

Program Resources

Energy New England’s Program Website: Contains program description, FAQs and program documents

Customer Information Packet: Outlines customer responsibilities, application process, program timelines, documents and contains some FAQs

Contractor Bid Comparison Form for Customers

Contractor Packet: Contains information about the application process, program documents, Locus Production Meter and FAQs

DOER’s MLP Solar Rebate Program Website: Program overview and technical requirements from Department of Environmental Resources

DOER MLP Solar Rebate Program Manual: Document detailing program outline, timelines and requirements

Page Updated: 07/14/2021