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Section 83E II Offshore Wind RFP

Massachusetts EDCs (National Grid, Eversource, Unitil) seek long-term contracts for energy storage projects via RFP 83E II. The solicitation covers both transmission and distribution-connected storage, with bids due on an extended deadline (see RFP documents). Successful projects will receive multi-year contracts to provide capacity, energy, and grid services.

Massachusetts Department of Energy Resources (DOER), Eversource Energy, National Grid, Unitil MA

Categories

Distributed Energy Resources (DER) Capacity/energy solicitations Battery storage (utility-scale) Battery storage (customer-sited)

Important dates

  • DPU Order issued

    DPU Docket 26-75 order authorizing solicitation

  • Published

  • Appendix A bidder response form posted

    Initial RFP documents

  • RFP revised version published

    Including redline and clean versions

  • Bid submission date extension filed

    Informational filing to DPU Docket 26-75

  • Q&A Batch 4 posted

  • Q&A Batch 5 posted

  • Revised responses to Batch 1 and 3 posted

  • Q&A Batch 6 posted

AI overview

The Massachusetts Electric Distribution Companies (National Grid, Eversource, and Unitil) have issued the second round of the Section 83E Request for Proposals (RFP) for long-term contracts for energy storage projects. This solicitation seeks proposals for both transmission-connected and distribution-connected energy storage resources to enhance grid reliability, integrate renewable energy, and meet the Commonwealth's clean energy and climate goals. The RFP is conducted under the oversight of the Massachusetts Department of Public Utilities (DPU) Docket 26-75.

The RFP was originally released in July 2026, with revisions published on September 4, 2026, including a redline version showing changes and a clean version. The bid submission deadline was extended via an informational filing to the DPU on September 4, 2026. Key documents include the RFP document, bidder response forms (Appendix A), a CPPD form for project information, a bid fee submittal form, pro forma long-term contracts for transmission-connected (National Grid and Eversource/Unitil) and distribution-connected (separate terms and conditions), standards of conduct for each utility, and the DPU order authorizing the solicitation. Evaluation team rosters for each utility have been posted.

Bidders must submit completed response forms, financial models, and required fees. The RFP includes detailed technical requirements, contract terms, and evaluation criteria. The procurement aims to secure cost-effective energy storage resources that can provide multiple benefits including capacity, energy, ancillary services, and distribution system support. The timeline has included multiple Q&A batches with responses to bidders' questions posted on September 9, 10, and 18, and October 1, 2026.

The selected projects will enter into long-term contracts with the respective utility. The contracts cover both energy and capacity payments, with specific terms based on whether the project connects to the transmission or distribution system. The RFP is a key part of Massachusetts' strategy to deploy energy storage and achieve its target of 1,000 MWh of storage by 2025. This round (83E II) follows the initial 83E round and represents a significant opportunity for energy storage developers.

Resources & contact

Proposal Document

View proposal document

Solicitation number

83E II

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