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Massachusetts Technical Standards Review Group

This site has been created to serve as a central internet resource for t
he Massachusetts Technical Standards Review
Group (TSRG).  The 
TSRG was assembled through an agreement among the DG Working Group members. Details
about this agreement can be found on page 30 of the 
Proposed Changes to the Uniform Standards for Interconnecting
Distributed Generation in Massachusetts
the final report of the Distributed Generation Working Group (September 14, 2012).
The MA-TSRG Final By-Laws are available here.


Utility Membership
ChairBabak Enyati, National Grid / Babak.Enayati@nationalgrid.com
Brett Jacobson, NSTAR / brett.jacobson@eversource.com
Cynthia Janke, 
WMECo / 413-585-1750 / cynthia.janke@eversource.com (alternate: Erik Morgan)
John Bonazoli, Unitil / bonazoli@unitil.com

Non-Utility Membership

Vice-Chair:  Solar RepMichael Brigandi, Borrego Solar / mbrigandi@borregosolar.com
CHP Rep:  Tony Morreale, LIG Consultants / tmorreale@ligconsultants.com
Gov/Cust Rep: Michael Coddington, Principal Engineer, NREL 
Ex Officio Membership
Nancy Stevens, Director of Consumer Division, Interconnection Ombudsperson, Massachusetts DPU

TSRG Web Page Administrator
Gerry Bingham, MBA, Sr. Coordinator for Distributed Energy Resources, MA DOER / gerry.bingham@state.ma.us

Common Technical Guideline 

The Common Technical Guideline highlights commonalities and differences in the interconnection practices and requirements of the four investor-owned utilities in MA. The document should serve as reference material for interconnecting customers served by the IOUs in the state.  

2017 Common Technical Standards Manual (Word; posted 12/5/17)  

Previous Versions:  2016 Common Technical Standards Manual (posted 8/1/16) | Common Technical Guideline Matrix (July 2015) | 2013 Guideline | 2013 Guideline Quick-Reference Matrix 


Special Meeting (POSTPONED) (DATE: TBD)
Pending non-utility TSRG representative response to implementation of ISO-NE inverter ride-through requirements (proposed implementation: June 1, 2018)

Meeting #17 (March 22, 2017; 8:00 AM)

Columbia Gas
4 Technology Drive / Westborough, MA 01581


Meeting #16 (November 28, 2017; 8:00 AM) 

Meeting #15 (August 29, 2017; 8:00 AM) 
National Grid – Worcester 939 Southbridge St. / Worcester, MA 01610

FINAL AGENDA (posted 8/17/17)
MINUTES (posted 11/6/17)

Meeting #14 (May 16, 2017; 8:00 AM) 
National Grid – Worcester 939 Southbridge St. / Worcester, MA 01610

DRAFT AGENDA (posted 5/15/17)
MINUTES (posted 5/30/17)
Materials Shared:
Stiffness Factor Test (PPT) (Keith Jones / Eversource)
Implementation of Revised IEEE Standard 1547 (PPT) (Dave Forrest / ISO-NE) 
Smart Inverter Technology Project Update (PPT) (Samer Arafa / National Grid)

Meeting #13 (February 24, 2017; 8:00 AM) 
AGENDA (posted 2/21/17)
MINUTES (posted 3/15/17)
Materials Shared:

Meeting #12 (December 2, 2016) 
AGENDA (posted 11/15/16)
MINUTES (posted 1/3/17)
Group Guidelines (posted 1/3/17)
Materials Under Review:
National Grid's New Unintentional Islanding Protection Practice
New York JU's Supplemental Unintentional Islanding
MA-TSRG Final By-Laws

Meeting #11 (September 7, 2016) 
AGENDA (posted 8/31/16)
Minutes (posted 9/23/16)
Materials Under Review:  MA-TSRG Final By-Laws

Meeting #10 (July 27, 2016)

Meeting #9 (March 17, 2016)


Meeting #8 (December 3, 2015)
Minutes (draft posted 12/19/15)

Meeting #7 (September 23, 2015)
Minutes (draft posted 10/5/15)


Meeting #6 (July 8, 2015) 

Meeting #5 (April 1, 2015) 
  • Hosting Capacity reading material provided by DOER: EPRI's publicly available Study entitled, "The Integrated Grid: A Cost-Benefit Framework," describes least-cost methods for determining PV Hosting Capacity with existing Impact Studies and System Planning activities.

Meeting #4 (September 17, 2014) 

   -  Minutes
   -  National Grid Presentation: Company Owned Solar - Phase II (PDF)
   -  NSTAR Responses to Agenda Items covered during their absence

Meeting #3 (April 16, 2014) 

Special Meeting (January 29, 2014)

Special Meeting (December 2, 2013)

Meeting #2 (September 16, 2013)

Supporting Materials 
If a non-TSRG member would like to share any documents or practices, please contact Babak Enayati through email (Babak.Enayati@nationalgrid.com).

TOPIC: Company-Specific Technical Requirements
2017 Common Technical Standards Manual (Word; posted 12/5/17)  
Previous Versions

National Grid: Requirements for Parallel Generation Connected to a National Grid Owned EPS (The MA Standard is in Electric Service Bulletin 756 - Attachment C)
NSTAR: 12 Point Verification (This document is in revision.)
TOPIC: Penetration Screen Review

Key Background Materials