Interconnection filings across the US grid operators.
All
ISO-NE130
FERC107
MISO83
PJM49
NYISO41
SPP19
CAISO18
ERCOT16
MISO
04 Dec 2026
MISO issues Large Load modeling requirements for 50 MW+ loads and computational loads (BPM-03X)
MISO’s Business Practices Manual for Large Loads says Large Load facilities are those with “Demand of 50 MW or more” at a single substation behind one or more points of withdrawal, while “Computational Load” is a subset with “25 MW or more of Demand from information technology equipment.” The manual
ISO-NE
10 Nov 2026
ISO-NE agenda includes integration of large loads (Nov. 10, 2026)
At ISO New England’s November 10, 2026 open board meeting, the agenda included management reports on “Integration of Large Loads,” signaling policy discussion relevant to large-load interconnection in Massachusetts and the ISO-NE footprint.
MISO
30 Oct 2026
Issue Submission Report: Generation and Load Alignment
MISO’s Issue Submission Report on “Generation and Load Alignment” says it is “proposing a new process that aligns large load studies with the generation needed to serve those loads,” and that doing so will “apply consistent assumptions, reduce timing mismatches, and produce more optimized network up
ISO-NE
27 Oct 2026
ISO-NE proposes large-load cost recovery and local service schedule revisions (PTO-AC presentation)
In an ISO New England PTO-AC presentation on 2026-10-27, the PTOs proposed large-load cost recovery provisions aimed to “Prevent transmission cost shifting to existing customers” and “Ensure full recovery of Large Load transmission upgrade costs.” ISO-NE’s local tariff changes would add three new se
ISO-NE
23 Oct 2026
ISO-NE issues scheduling external transactions procedure update (CROP.31001)
ISO New England’s CROP.31001 Scheduling External Transactions procedure, effective 2026-10-23, sets operating rules for interchange scheduling and curtailment rather than describing a specific data-center project. ISO-NE says the CTS interface normally allows a 300 MW ramp per 15-minute interval, wi
ISO-NE
23 Oct 2026
ISO-NE highlights large-load growth in consumer forum (Office Hours)
ISO New England’s Oct. 23, 2026 Office Hours presentation says the region is facing “large-load growth” and that Q&As “center on keeping electricity reliable and affordable while demand from electrification, data centers and other large loads grows.” The deck also says ISO-NE’s 2026 Regional Electri
ISO-NE
ISO-NE posts 2026 transmission planning base case library with RI Revolution Wind included (2026 Transmission Planning Base Case Library)
ISO New England’s 2026 Transmission Planning Base Case Library says its 2031 and 2036 topology cases include future Rhode Island generation, naming “RI – Revolution Wind” among the major future resources and using a June 1 cutoff for projects expected to be in service by 2036.
ISO-NE
23 Oct 2026
ISO-NE presents 2027 load forecast methodology and large-load modeling approach
ISO-NE’s October 23, 2026 Load Forecast Committee presentation says the long-term load forecast is used for regional resource adequacy, reliability, transmission planning, and maintenance coordination, and that its large-load forecast is built from Transmission Owner surveys and follow-up discussion
ISO-NE
22 Oct 2026
ISO-NE reviews large-load redispatch and jurisdiction for non-firm service (no docket)
ISO New England says its proposed price-based re-dispatch mechanism for Large Load Transmission Customers taking non-firm service is meant to address FERC’s large-load show-cause concerns and jurisdictional issues, including FERC’s finding that the ISO-NE tariff should reflect “Eligible Customers ta
ISO-NE
22 Oct 2026
ISO-NE issues 2027 Annual Work Plan (n/a)
ISO New England's 2027 Annual Work Plan says FERC has issued an order “intended to speed up the integration of large energy users, such as data centers, while adding consumer safeguards,” and that ISO-NE “plans to submit a compliance filing by Nov. 16, 2026.” The plan also says stakeholder discussio
PJM
22 Oct 2026
PJM and FERC focus on large-load reliability challenges (n/a)
PJM and FERC used the annual Reliability Technical Conference to flag reliability and integration risks from accelerating data-center load growth. PJM said mounting supply concerns from large-load customers are colliding with slower development of new generation and transmission, and it is developin
FERC
22 Oct 2026
FERC and NRC announce joint meeting on grid reliability and managing load increases (AD06-6-000)
FERC and the NRC will hold a joint public meeting at NRC Headquarters to discuss “grid reliability” and “managing load increases,” with staff from both agencies and the North American Electric Reliability Corporation briefing the Commissioners, according to FERC.