ISO NEW ENGLAND INC

As filed

Subsection

03

NTEE code

C35

Classification

1000

Street

1 SULLIVAN RD

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Other organizations at this address

1 other organization in the IRS Business Master File lists the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

• ISO NEW ENGLAND RETIREE MEDICAL DENTAL AND LIFE TR

  EIN 13-7379593

Mission and programs · 2025

• ISO NEW ENGLAND INC. (ISO-NE) IS THE NOT-FOR-PROFIT ORGANIZATION AUTHORIZED BY THE FEDERAL GOVERNMENT TO PERFORM THREE CRITICAL FUNCTIONS TO ENSURE THE RELIABLE SUPPLY OF ELECTRICITY THROUGHOUT NEW ENGLAND. THROUGH ITS FIRST FUNCTION, ENERGY ADMINISTRATION, ISO-NE ENSURES THE CONSTANT AVAILABILITY OF COMPETITIVELY PRICED ELECTRICITY FOR THE REGION'S 15.1 MILLION RESIDENTS BY DESIGNING, REFINING, AND ADMINISTERING IN A FAIR AND UNBIASED MANNER THE REGION'S WHOLESALE ELECTRICITY MARKETS. DURING 2025, ISO-NE WAS RESPONSIBLE FOR THE FAIR ADMINISTRATION OF APPROXIMATELY $11.3 BILLION OF MARKET TRANSACTIONS.

  Expenses $129,155,526 · Revenue $146,427,614

• THROUGH ITS SECOND ACTIVITY, RELIABILITY ADMINISTRATION, ISO-NE ENSURES THE RELIABLE DAY-TO-DAY OPERATION OF THE REGION'S HIGH VOLTAGE TRANSMISSION SYSTEM. AMONG OTHER THINGS, THIS INVOLVES (I) COORDINATING THE OPERATION OF THE REGION'S NEARLY 400 DISPATCHABLE POWER PLANTS AND 9,000 MILES OF HIGH VOLTAGE TRANSMISSION LINES; (II) MANAGING THE MOVEMENT OF HIGH-VOLTAGE ELECTRICITY INTO, WITHIN, AND OUT OF NEW ENGLAND; (III) ENSURING THAT THE SIX-STATE NEW ENGLAND REGION HAS THE POWER SYSTEM RESOURCES NECESSARY TO MEET CONSUMER DEMAND FOR ELECTRICITY AND RELIABILITY REQUIREMENTS; (IV) COORDINATING HOW TRANSMISSION LINES, GENERATION, AND OTHER TECHNOLOGIES CONNECT TO AND OPERATE ON THE REGIONAL POWER GRID RELIABLY; AND (V), WORKING WITH THE INDUSTRY TO DEVELOP TRANSMISSION INFRASTRUCTURE SOLUTIONS THAT ARE ESSENTIAL FOR MAINTAINING POWER SYSTEM RELIABILITY. DURING 2025, ISO-NE COORDINATED THE GENERATION AND TRANSMISSION OF THE APPROXIMATELY 117,744 GIGAWATT-HOURS OF POWER CONSUMED IN THE REGION.

  Expenses $80,138,831 · Grants $13,500 · Revenue $90,833,733

• THROUGH ITS THIRD ACTIVITY, SCHEDULING SERVICES, ISO-NE FORECASTS AND SCHEDULES THE ELECTRICITY NEEDED IN THE REGION FOR EVERY SECOND OF EVERY DAY AND ENSURES THERE IS ENOUGH ELECTRICITY GENERATED TO MEET DEMAND AS WELL AS RESOURCES NEEDED MAINTAIN RELIABILITY CRITERIA. IN CONDUCTING THIS ACTIVITY, ISO-NE (I) MONITORS THE FLOW OF ELECTRICITY INTO, OUT OF, AND OVER NEW ENGLAND'S HIGH-VOLTAGE TRANSMISSION SYSTEM AND (II) SCHEDULES HUNDREDS OF DIVERSE POWER RESOURCES AND TRANSMISSION COMPONENTS TO SUPPLY ELECTRICITY TO MEET THE REGION'S DEMAND AND REQUIRED RESERVE MARGIN. ISO-NE IS RESPONSIBLE FOR ENSURING THAT THE GRID CAN WITHSTAND THE SUDDEN LOSS OF A POWER PLANT OR TRANSMISSION EQUIPMENT CAUSED BY WEATHER, MECHANICAL FAILURE, OR OTHER EVENT.

  Expenses $57,390,603 · Revenue $65,055,986

As filed on the 2025 return.

Officers and directors · 2025

As listed in Part VII of the 2025 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

The first 25 listed. Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

• 2025

  Revenue

  $303,262,191

  Expenses

  $303,262,191

  Contributions

  $0

  Grants paid

  $13,500

• 2024

  Revenue

  $264,594,190

  Expenses

  $264,594,190

  Contributions

  $0

  Grants paid

  $13,500

• 2023

  Revenue

  $235,600,056

  Expenses

  $235,600,056

  Contributions

  $0

  Grants paid

  $13,500

• 2022

  Revenue

  $210,813,398

  Expenses

  $210,813,398

  Contributions

  $0

  Grants paid

  $17,900

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

• 2021 · 990

  Revenue

  $201,685,559

  Expenses

  $201,685,559

  Assets (EOY)

  $660,644,997

• 2020 · 990

  Revenue

  $195,643,356

  Expenses

  $195,643,356

  Assets (EOY)

  $546,417,316

• 2019 · 990

  Revenue

  $194,266,780

  Expenses

  $194,266,780

  Assets (EOY)

  $566,816,092

• 2018 · 990

  Revenue

  $193,047,934

  Expenses

  $193,047,934

  Assets (EOY)

  $547,211,218

• 2017 · 990

  Revenue

  $184,412,903

  Expenses

  $184,417,903

  Assets (EOY)

  $474,577,474

• 2016 · 990

  Revenue

  $181,579,382

  Expenses

  $181,579,382

  Assets (EOY)

  $449,814,425

• 2015 · 990

  Revenue

  $174,655,653

  Expenses

  $174,655,653

  Assets (EOY)

  $412,873,681

• 2014 · 990

  Revenue

  $163,167,107

  Expenses

  $163,167,107

  Assets (EOY)

  $605,648,771

• 2013 · 990

  Revenue

  $157,283,828

  Expenses

  $157,283,828

  Assets (EOY)

  $693,555,481

• 2012 · 990

  Revenue

  — not reported

  Expenses

  $148,848,236

  Assets (EOY)

  $503,520,545

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

• UNIVERSITY OF MASSACHUSETTS AMHERST

  $11,900

  2022 · SUPPORT FOR THE COLLEGE OF ENGINEERING INDUSTRY PARTNER PROGRAMS

• UNIVERSITY OF MASSACHUSETTS AMHERST

  $7,500

  2023 · SUPPORT FOR THE COLLEGE OF ENGINEERING INDUSTRY PARTNER PROGRAM FOR THE ACADEMIC YEAR 2023

• UNIVERSITY OF MASSACHUSETTS AMHERST

  $7,500

  2025 · SUPPORT FOR THE COLLEGE OF ENGINEERING INDUSTRY PARTNER PROGRAM

• IEEE FOUNDATION INC

  $6,000

  2022 · SUPPORT OF THE REGION 1 RECIPIENTS FOR THE IEEE PES SCHOLARSHIP PLUS INITIATIVE FUND.

• IEEE FOUNDATION INC

  $6,000

  2024 · SUPPORT OF THE REGION 1 RECIPIENTS FOR THE IEEE PES SCHOLARSHIP PLUS INITIATIVE FUND

• IEEE FOUNDATION INC

  $6,000

  2023 · SUPPORT OF THE REGION 1 RECIPIENTS FOR THE IEEE PES SCHOLARSHIP PLUS INITIATIVE FUND

• IEEE FOUNDATION INC

  $6,000

  2025 · SUPPORT OF THE REGION 1 RECIPIENTS FOR THE IEEE PES SCHOLARSHIP PLUS INITIATIVE FUND

Where these grants went next →

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Other IRS files