Residential Solar Rebate Program

WBMLP's Headquarters
WBMLP Headquarters

Program Overview

The new Massachusetts Municipal Light Plant Solar Program, offered through West Boylston Municipal Light Plant (WBMLP) and the Massachusetts Department of Energy Resources (DOER), provides our residential customers a rebate for the purchase and installation of a PV Solar System on their homes.

WBMLP’s goal is to install approximately 73 kW of new renewable solar energy in West Boylston.

Installation Requirements

Eligible solar installations must be 10 kW or less, with less than 20% shading, and face between 90 and 270 degrees. Municipal light plants are permitted to overlay their own regulations regarding solar installations over the state's program parameters.

Rebate Information

The program includes a solar rebate of up to $1.20/watt (WBMLP and MA DOER each contribute $.60/watt), capped at 50% of total actual installed costs or a project size maximum of 10kW DC for a $12,000 total rebate ($6,000 from WBMLP and $6,000 from MA DOER).

Renewable Energy Credits (RECs) earned from the installations are owned and retired by WBMLP so the environmental attributes benefit all of West Boylston’s customers.

Federal Tax Credits

  • 26% for systems placed in service after 12/31/2019 and before 01/01/2021, five-year carryover provision*
  • 22% for systems placed in service after 12/31/2020 and before 01/01/2022, five-year carryover provision*

State Tax Credits

  • 15% credit of the net expenditure for a renewable energy system, up to $1,000, three-year carryover provision*

* Verify and confirm the state and federal tax incentives as they are subject to fluctuation and change. As always, please consult with your tax advisor or accountant for the most up to date tax information for your situation.

2021 WBMLP Residential Solar Rebate Program


  • • Residential solar only.
  • • Maximum 10kW (DC) system size.
  • • Maximum 20% shading.
  • • Panel orientation must be greater than 90 degrees and less than 270 degrees (southerly facing).
  • • Rebate = $1.20 per watt, capped at 50% of project cost, up to $6,000.00 from WBMLP and $6,000 from Massachusetts Department of Energy Resources (DOER).
  • • Solar Rebate Program runs through June 30, 2021 or until all program funds are spent, whichever comes first.
  • • Construction must be complete within 12 months of application date.


  • ☀ STEP 1
  • Customer/Installer completes Interconnection Application available here, and submits it to WBMLP with the following documents:
    • Project cost proposal
    • Shading report
    • Solar design drawings from a licensed installer for your solar system.
  • ☀ STEP 2
    WBMLP reviews application and, if approved, sends customer/installer a Pre-Approval Letter via email.
  • ☀ STEP 3
    Customer/Installer applies for grant online and submits the following required documents:
    • WBMLP Pre-Approval Letter
    • Shading Report
    • MLP Solar Rebate Program Participant’s Agreement – signed by contractor and homeowner
    • Project Cost Proposal
    • Shading Report
    • Solar Design Drawings
    • Proof of Property Ownership (Deed, recent tax bill)
  • ☀ STEP 4
    MMWEC reviews Grant Application to ensure it meets program criteria, then forwards application to the DOER for final approval.
  • ☀ STEP 5
    DOER approves Grant Application; DOER issues an approval letter to MMWEC. MMWEC then sends the customer/installer the Grant Approval Letter as well as the MLP Solar Rebate Project Completion Form.
  • ☀ STEP 6
    Once installation and interconnection is complete, WBMLP provides customer a Certificate of Completion. Customer/Installer emails the Certificate of Completion and the MLP Solar Rebate Completion Form to MMWEC.
  • ☀ STEP 7
    Customer rebate payment will be mailed to customer within 90 days after receipt of MLP Solar Rebate Completion Form and Certificate of Completion.
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