Grid modernization and AMI filings and reports

Here you can view a list of grid modernization and advanced metering infrastructure filings and reports that were filed with the DPU.

1. Introduction

On this page you will find:

• the annual reports and term reports. In these filings, you will find program progress updates and data analyses.
• the annual grid modernization factor (GMF) and advanced metering infrastructure (AMI) filing materials for the electric companies. In these filings, the electric companies seek cost recovery for their pre-authorized grid modernization investments.
• the third-party evaluation reports.  In these filings, you will find evaluation reports that assess the performance of the electric companies’ grid modernization investments.  A consultant produces the evaluation reports.
• the GMF tariffs of each electric company approved by the Department of Public Utilities (DPU).

2. Filings approving the grid modernization plans

The DPU approved Eversource's grid modernization plans in D.P.U. 15-122, D.P.U. 20-74, and D.P.U. 21-80.

The DPU approved National Grid's grid modernization plans in D.P.U. 15-120 and D.P.U. 21-81.  

The DPU approved Unitil's grid modernization plans in D.P.U. 15-121 and D.P.U. 21-82.  

3. Eversource

Year	Case number	Annual / term report	Report data	Cost recovery case number
2025	D.P.U. 26-91	2022-2025 term report (PDF)	2022-2025 data (Excel)	D.P.U. 26-82/ D.P.U. 26-81
2024	D.P.U. 25-32	annual report (PDF)	2024 data part 1 (Excel) 2024 data part 2 (Excel)	D.P.U. 25-57/ D.P.U 25-58
2023	D.P.U. 24-40	annual report (PDF)	2023 data part 1 (Excel) 2023 data part 2 (Excel)	D.P.U. 24-58 / D.P.U. 24-45
2022	D.P.U. 23-30	annual report (PDF)	2022 data (Excel)	D.P.U. 23-49
2021	D.P.U. 22-40	2018-2021 term report (PDF)	2018-2021 data (Excel)	D.P.U. 22-50
2020	D.P.U. 21-30	annual report (PDF)	2020 data (Excel)	D.P.U. 21-58
2019	D.P.U. 20-46	annual report (PDF)	2019 data (Excel)	D.P.U. 20-54
2018	D.P.U. 20-45	annual report (PDF)	2018 data (Excel)	D.P.U. 19-23

4. National Grid

Year	Case number	Annual / term report	Report data	Cost recovery case number
2025	D.P.U. 26-92	2022-2025 term report (PDF)	2022-2025 data part 1 (Excel) 2022-2025 data part 2 (Excel)	D.P.U. 26-43 / D.P.U. 26-42
2024	D.P.U. 25-32	annual report (PDF)	2024 data (Excel)	D.P.U. 25-22 / D.P.U. 25-23
2023	D.P.U. 24-40	annual report (PDF)	2023 data (Excel)	D.P.U. 24-36 / D.P.U. 24-38
2022	D.P.U. 23-30	annual report (PDF)	2022 data (Excel)	D.P.U. 23-28
2021	D.P.U. 22-41	2018-2021 term report (PDF)	2018-2021 data (Excel)	D.P.U. 22-23
2020	D.P.U. 21-30	annual report (PDF)	2020 data (Excel)	D.P.U. 21-32
2019	D.P.U. 20-46	annual report (PDF)	2019 data part 1 (Excel) 2019 data part 2 (Excel)	D.P.U. 20-31
2018	D.P.U. 20-45	annual report (PDF)	2018 data (Excel)	D.P.U. 19-36

5. Unitil

Year	Case number	Annual / term report	Report data	Cost recovery case number
2025	D.P.U. 26-93	2022-2025 term report (PDF)	2022-2025 data part 1 (Excel) 2022-2025 data part 2 (Excel) 2022-2025 data part 3 (Excel)	D.P.U. 26-60
2024	D.P.U. 25-32	annual report (PDF)	2024 data (Excel)	D.P.U. 25-47
2023	D.P.U. 24-40	annual report (PDF)	2023 data (Excel)	D.P.U. 24-54
2022	D.P.U. 23-30	annual report (PDF)	2022 data (Excel)	D.P.U. 23-38
2021	D.P.U. 22-42	2018-2021 term report (PDF)	2018-2021 data (Excel)	D.P.U. 22-48
2020	D.P.U. 21-30	annual report (PDF)	2020 data (Excel)	D.P.U. 21-52
2019	D.P.U. 20-46	annual report (PDF)	2019 data (Excel)	none
2018	D.P.U. 20-45	annual report (PDF)	2018 data (Excel)	none

There are no cost recovery filings for 2018 and 2019.  According to a 2018 Unitil letter, there were no costs in 2018.  According to a 2019 Unitil letter, no projects submitted for cost recovery since no projects closed in 2019.

6. Grid modernization third-party evaluation reports

Year	Third-party evaluation report
2025	Automated Distribution Management System/Advanced Load Flow (ADMS/ALF) Distributed Energy Resource Management System (DERMS) Advanced Distribution Automation (ADA) Monitoring & Control (M&C) Volt/VAR Optimization (VVO)
2024	Automated Distribution Management System/Advanced Load Flow (ADMS/ALF) Distributed Energy Resource Management System (DERMS) Advanced Distribution Automation (ADA) Monitoring & Control (M&C) Volt/VAR Optimization (VVO)
2023	advanced distribution automation (ADA) advanced distribution management system/advanced load flow (ADMS/ALF) volt/VAR optimization monitoring and control (M&C)
2022	advanced distribution automation (ADA) advanced distribution management system/advanced load flow (ADMS/ALF) volt/VAR optimization communications monitoring and control (M&C)
2021	third-party evaluation report
2020	advanced distribution automation (ADA) advanced distribution management system/advanced load flow (ADMS/ALF) volt/VAR optimization communications monitoring and control (M&C)
2019	third-party evaluation report
2018	third-party evaluation report

7. GMF tariffs

You can find the GMF tariffs at the links below:

• Eversource
• National Grid
• Unitil
  1. select "Massachusetts" as the state and "electric" as the service
  2. click on "Electric Charges & Adjustments (Massachusetts)"
  3. scroll down to "Grid Modernization Factor (GMF)" 

Last updated:	July 31, 2026