DOER and the Distribution Companies have completed the evaluation of bids received in response to the Section 83E Storage request for proposals (“Section 83E 1 RFP”). The bid evaluation process included monitoring and assistance by an Independent Evaluator.

DOER selected Energizar (FlatIron Energy), River Mill Storage (Rhynland Energy), Trimount ESS (Jupiter Power), and Salt Cod (FlatIron Energy) for a total of 1,268 MW of energy storage capacity.

The final acceptance of the bids and the award of contracts is conditional upon successful negotiation of mutually acceptable long-term contracts between the bidders and each of the Massachusetts Distribution Companies, as well as required regulatory approvals of such contracts, as provided by the RFP.

DOER has notified the Department that it is in the process of finalizing selection in consultation with the Independent Evaluator and the Evaluation Team is extending the Bid Selection Date.  All subsequent solicitation schedule dates will remain the same as detailed in the Department’s Order.  

DOER will keep the Department informed of the progress towards the selection of proposals and the ultimate execution of contracts consistent with the remainder of the Section 83E timetable in the Order.

February 21, 2025

Request for Public Comment on 83E Round 1 Solicitation for Mid-duration Energy Storage Projects by the Massachusetts Distribution Companies & the Massachusetts Department of Energy Resources

The Massachusetts Department of Energy Resources (DOER), the Massachusetts Electric Distribution Companies (EDCs), and the Attorney General’s Office (AGO) (collectively “RFP Drafting Parties”) welcome public comments on the following areas relevant to a forthcoming Request for Proposals (RFP) for a first-round solicitation for mid-duration energy storage projects under Section 83E (83E Round 1). The RFP Drafting Parties provide the areas for comment in the link to prompts below to solicit input from interested parties and stakeholders on specific questions of interest related to 83E Round 1, which is for procurement of environmental attributes only. While the RFP Drafting Parties are currently focused on 83E Round 1, please provide and mark any comments on considerations for Round 2 and other future Section 83E Procurements. Interested parties and stakeholders are invited to provide comments in response to the prompts below and/or on any other topics related to 83E Round 1. 

Whenever possible, please provide explanations or justifications for any recommendations provided. Please note that the RFP Drafting Parties will consider comments in drafting the RFP but not otherwise respond to comments received.   

Submission Instructions: Please submit all comments via email to Thomas.Ferguson@mass.gov as soon as possible, but no later than 5:00pm on March 7, 2025. Please include “83E Round 1 Comments” and the name of the individual or organization submitting comments in the subject line.   

Confidentiality: Please note that all comments received will be posted publicly on the MACleanEnergy.com webpage following the submission deadline; unless a party indicates its submission contains proprietary or commercially sensitive business information that should be treated as confidential energy information, to the extent permitted by law.  Public information is highly preferred as the RFP Team may cite and refer to public comments. Confidential submissions should be clearly marked “CONFIDENTIAL” and submitted along with a public version with any such confidential information redacted.  Commenters are encouraged to limit redactions to the extent possible.  

Pursuant to DOER’s authority under Massachusetts General Law Chapter 25A, Section 7, and Section 83E certain energy and other information collected by DOER can be maintained for the sole and confidential use of the Commonwealth, its agencies, and offices. DOER may also apply any applicable exemption under the Commonwealth’s public records law. DOER shall also confidentially provide any and all confidential comments or responses to the EDCs, the AGO, the Section 83E Independent Evaluator, and possibly to the Massachusetts Department of Public Utilities (collectively, “Massachusetts Parties”) in a manner as determined by DOER, in its sole discretion.  In the event confidential information is submitted to DOER and confidential treatment is not afforded for any reason, by a governmental agency or otherwise, or any confidential information is inadvertently made public, DOER and the Massachusetts Parties shall not be held responsible.   

Link to prompts