California Independent System Operator Corporation
250 Outcropping Way, Folsom, CA · IRS data through FY2024
Revenue, expenses and net assets
Revenue Expenses Net assets
| Tax year | Revenue | Expenses | Net assets |
|---|---|---|---|
| FY2024 | $285,941,806 | $292,763,479 | $200,748,234 |
| FY2023 | $272,540,764 | $277,699,154 | $212,263,771 |
| FY2022 | $255,713,716 | $250,885,967 | $210,911,090 |
| FY2021 | $249,597,089 | $229,434,464 | $232,423,679 |
| FY2020 | $249,838,855 | $224,279,628 | $216,040,477 |
| FY2019 | $229,176,886 | $213,615,259 | $186,460,025 |
| FY2018 | $228,194,347 | $221,993,868 | $166,307,468 |
| FY2017 | $224,035,523 | $203,371,945 | $161,897,784 |
| FY2016 | $213,853,844 | $203,245,216 | $134,502,989 |
| FY2015 | $216,011,750 | $201,085,015 | $124,731,394 |
| FY2014 | $215,716,005 | $214,431,493 | $111,451,674 |
| FY2013 | $213,678,728 | $254,571,385 | $110,910,324 |
| FY2012 | $213,186,565 | $248,509,341 | $155,109,460 |
| FY2011 | $191,613,537 | $239,054,231 | $191,118,035 |
Form 990 filings
The returns filed by California Independent System Operator Corporation (EIN 94-3274043), including Form 990 PDFs and e-file data by year, are available in ProPublica's Nonprofit Explorer. The figures on this page come from IRS data files built from those returns.
Where the revenue came from
| Source | Amount | % of revenue |
|---|---|---|
| Contributions & grants | $0 | 0% |
| Program service revenue | $272,216,015 | 95% |
| Other revenue | $13,725,791 | 5% |
Where the money was spent
| Category | Amount | % of expenses |
|---|---|---|
| Program services | $261,286,939 | 89% |
| Management & general | $31,476,540 | 11% |
| Fundraising | $0 | 0% |
What the numbers show
- Program service revenue made up 95% of total revenue in FY2024.
- Program services accounted for 89% of functional expenses, management & general 11%, and fundraising 0%.
- 89% of functional expenses went to program services in FY2024. That is higher than 65.2% of 23 Public & Societal Benefit organizations in CA.
- Net assets covered about 8.2 months of expenses at the end of the reporting year. That puts it in the 38th percentile among 725 Public & Societal Benefit organizations in CA.
- Total revenue was higher than 99.7% of 746 Public & Societal Benefit organizations in CA.
- Total revenue rose from $191,613,537 in FY2011 to $285,941,806 in FY2024. Revenue increased in 11 and decreased in 2 of 13 year-over-year comparisons.
- Expenses exceeded revenue in 5 of 14 reported years (FY2011, FY2012, FY2013, FY2023, FY2024).
- Net assets grew from $191,118,035 to $200,748,234 between FY2011 and FY2024.
- Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (supporting organization, type unspecified).
Figures compared against other organizations of the same NTEE program area in the same state. See the methodology page for how these are calculated and the guide to reading nonprofit financials for their limits.
About this organization
IRS status
| Ruling year | 1998 |
| Subsection | 501(c)(3) |
| Classification | Public charity |
| Program area (NTEE) | W99 — Public & Societal Benefit (in CA) |
| Donations | Listed in the IRS Publication 78 data as eligible to receive tax-deductible contributions (supporting organization, type unspecified). |
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Source: Internal Revenue Service — Exempt Organizations Business Master File (downloaded November 4, 2026), Statistics of Income extracts, Form 990 e-file data, Publication 78 and the Automatic Revocation list. Figures are as reported by the organization; IRS processing may adjust them. This is not a charity rating and not tax advice. Confirm deductibility in IRS Tax Exempt Organization Search.
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