NYISO: New York Independent System Operator

Nonprofit profile at a glance

EIN
141815612
IRS 990 coverage
2010–2025
Official website data refreshed
Sep 2026
Forms available
Form 990 2025, Form 990-T 2020
Location
Rensselaer, NY, USA
Phone
5183566000
Rating
81
Verdict
STRONG
Rating confidence
Moderate
Sector
Public Utilities

Official website

Reported finances

Revenue
$274,786,972
Expenses
$274,786,972
Assets
$869,133,029
Liabilities
$869,133,029

Source: IRS Form 990. Selected filing: tax year 2025. Amounts in USD.

Leadership & pay

35 people listed

Executive titles in this filing

  • RICHARD J DEWEY (PRESIDENT & CHIEF EXECUTIVE OFFICER)
  • AARON D MARKHAM (VICE PRESIDENT, OPERATIONS)
  • CHERYL L HUSSEY (VICE PRESIDENT, CHIEF FINANCIAL OFFICER)
  • DENEEN BYRNE (VICE PRESIDENT, HUMAN RESOURCES)
  • DOUGLAS CHAPMAN (SENIOR VICE PRESIDENT, CHIEF INFORMATION OFFICER)
  • EMILIE R N CHRAPOWITZKY (EXECUTIVE VICE PRESIDENT & CHIEF OPERATING OFFICER)

Highest reported compensation

  • RICHARD J DEWEY (PRESIDENT & CHIEF EXECUTIVE OFFICER): $2,790,112 total reported compensation
  • EMILIE R N CHRAPOWITZKY (EXECUTIVE VICE PRESIDENT & CHIEF OPERATING OFFICER): $1,459,408 total reported compensation
  • ROBERT FERNANDEZ (EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER): $1,286,645 total reported compensation

Source: IRS Form 990. Selected filing: tax year 2025. Names and roles reflect this filing, not necessarily current officeholders.

Overview

Mission

The NYISO’s mission is to ensure power system reliability and competitive markets in a clean energy future. A core activity through which we serve that mission is to perform in-depth analyses of power system data and then provide information on the changing electric system to all stakeholders. Hidden Stay Informed. FAQ Learn more about the organization responsible for managing New York’s electric grid and its competitive wholesale electric marketplace Contact Us Discover how to get in touch with us Hidden.

What it reported doing in 2025

Nyiso, governed by an independent board of directors and a committee structure comprised of stakeholder representatives, is subject to the oversight of the federal energy regulatory commission, and regulated in certain aspects by the New York state public service commission. Its operations are also overseen by electric system reliability organizations, including the north american electric reliability corporation, the northeast power coordinating council, and the New York state reliability council. Nyiso's efforts to serve the public interest and provide benefit to consumers include: i. Operating the bulk electricity grid in New York state, managing the flow of power on more than 11,000 circuit-miles of high-voltage transmission lines, from over 700 power generating units, on a minute-to-minute basis, 24 hours-a-day, seven days-a-week. Ii. Administering and monitoring New York's wholesale electricity markets, involving more than 400 market participants in daily and hourly auctions that match the buyers and sellers of power. Iii. Conducting long-term planning assessments of New York state's electricity resources and power needs, and evaluating the feasibility of projects proposed to meet those needs. Iv. Providing authoritative and objective data and analysis on energy issues to policy makers, regulators, market participants and other stakeholders. V. Developing and deploying communications and data management systems to optimize the dispatch of power on the bulk power system and implement wholesale electricity market design.

Operating model

Revenue model
Other-operating. 97% of the money available for current operations came from other operating revenue.
Distribution model
Direct operator. The filing allocates 100% of reported program-service expenses outside its grant, affiliate-payment, and member-benefit lines. This expense classification does not rule out separately announced grant awards.

The verdict

STRONG - The filed numbers largely add up and a large share of available resources goes toward mission work. Expenses are high relative to revenue and liabilities are high compared with assets.

Rating breakdown

  • Financial Efficiency: 67
  • Transparency & Controls: 96
  • Accountability: 94
  • Sustainability: 33
  • Growth: 100

Detailed rating inputs

Financial Efficiency

  • Mission deployment rate: 75.9%; rating input score 76
  • Program expense ratio: 75.3%; rating input score 75
  • Fundraising efficiency: Limited

Transparency & Controls

  • Consistency checks: 100%; rating input score 100; 66th percentile among comparable filings
  • Pay-setting controls: 5 of 6 controls in place; rating input score 83
    • Compensation committee: Pass
    • Independent consultant: Pass
    • Other Form 990s reviewed: Pass
    • Written employment contract: Missing
    • Compensation survey or study: Pass
    • Board or committee approval: Pass
  • Foreign activity oversight: Limited
  • Grant itemization coverage: 100%; rating input score 100; 81st percentile among comparable filings
  • Major donor itemization: Limited
  • Related-party transparency: Yes; rating input score 100

Accountability

  • Independent voting board: 90%; rating input score 90; 19th percentile among comparable filings
  • Governance controls: 9 of 9 controls in place; rating input score 100
    • Conflict-of-interest policy: Pass
    • Whistleblower policy: Pass
    • Document-retention policy: Pass
    • CEO compensation review process: Pass
    • Other executive compensation review process: Pass
    • Form 990 shared with the board: Pass
    • Board meeting minutes documented: Pass
    • Audit committee oversight: Pass
    • Independent financial-statement audit: Pass

Sustainability

  • Operating margin: 0%; rating input score 23; 23rd percentile among comparable filings
  • Total-asset coverage ratio: 3.16; rating input score 70; 70th percentile among comparable filings
  • Liabilities to assets ratio: 1; rating input score 3; 3rd percentile among comparable filings
  • Officer compensation ratio: 7.9%; rating input score 8; 8th percentile among comparable filings

Growth

  • Program expense growth: 4% per year; rating input score 100; 30th percentile among comparable filings
  • Revenue growth: 3.6% per year; rating input score 100; 29th percentile among comparable filings
  • Asset growth: 2.8% per year; rating input score 100; 15th percentile among comparable filings

Details

  • What they do: Mission, programs, and operating context captured from the official website.
  • Where the money goes: 75.9% of revenue deployed · 75.3% of spending went to programs
  • Governance: 9 of 10 board members independent · 9 of 9 filing controls reported
  • Programs: 1 filed program accomplishment · $206.9M in reported program spending
  • Leadership: top reported pay $2.8M · 35 people listed · 5 of 6 pay-setting controls reported
  • Highest-paid contractors: 5 contractors listed · $27.7M reported
  • Consistency: 44 of 44 current checks pass
  • Schedules: 8 filed schedules · includes grants, executive pay, and related organizations
  • Filing history: 16 filing years from 2010 to 2025
  • Contacts: How to reach this organization
  • Money network: 36 filed money-flow records
  • Related organizations: 2 filed related-organization links
  • Grant readiness: Federal tax and exclusion status, award history, and grant-maker relationships.
  • People: Everyone the filings name, and which of them the filings identify by more than a name.

Key Signals

Signals prioritize questions for review. They are not findings of misconduct.

  • High — Sustainability: Operating margin scored 23/100.
  • High — Sustainability: Liabilities to assets ratio scored 3/100.
  • High — Sustainability: Officer compensation ratio scored 8/100.