Wisconsin · Nonprofit
CLEAN WISCONSIN INC
CLEAN WISCONSIN INC (Wisconsin) receives grants from 57 organizations whose IRS filings report $14,014,080 to it, the largest being UNITED STATES ENERGY FOUNDATION ($2,719,500). 28 of them have funded it in more than one year.
- Revenue FY2025
- $5.0M
- Funders on record
- 57
- Grants received
- $14M
- Net assets
- $5.9M
What Clean Wisconsin Inc does
Mission
To protect and preserve wisconsin's clean air, water, and natural heritage.
As stated on its FY2025 Form 990.
Programs
Energy - working to increase the state's investment in energy efficient and renewable energy sources, thus reducing global warming gas emissions, by moving wisconsin forward with the clean energy jobs act, increasing energy efficiency in wisconsin, reducing wisconsin's contribution to global warming, protecting wisconsin from unsafe nuclear power plants and toxic waste, increasing renewable energy in wisconsin, and stopping alliant energy's proposed coal plant. Today's innovative technologies combined with abundant wisconsin resources, like wind and agriculture byproducts, offer an opportunity to create new jobs and economic activity with clean, efficient, and safe energy sources.
$1,796,937 spent$85,902 earned by the program57% of program spendingWater - working to protect and improve wisconsin's waters by passing and enforcing the great lakes compact, restoring the great lakes, protecting wisconsin's groundwater, reducing mercury pollution that is contaminating our lakes and fish and harming our citizens, and reducing the amount of animal waste, fertilizers and toxins polluting our lakes and rivers.
$1,362,297 spent$65,124 earned by the program43% of program spending
The 2 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $3,159,234.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2024 to 2025, from $4.6M to $6.6M (+44%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 8% · 2021 14% · 2025 1%. Grants only. Government contracts and fees sit inside program revenue.
96% of CLEAN WISCONSIN INC’s revenue is contributions — more donation-reliant than the typical peer (88% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Mark Redsten
President & CEO
Board chair
Josh Neudorfer
Chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 12 funders to 22 funders, grant income rose $1.0M → $2.5M.
18 of 57 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 30% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of CLEAN WISCONSIN INC’s funders (the co-funder graph). Top 30 of 57 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
CLEAN WISCONSIN INC has a broad base — no single funder exceeds 19% of grant income, and it takes 4 funders to reach half.
the vertical line marks half of all grant income — 4 funders to its left
58% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund CLEAN WISCONSIN INC.
Largest funder’s share by year: 2017 48% · 2018 33% · 2019 25% · 2020 25% · 2021 24% · 2022 27% · 2023 34% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
52% of CLEAN WISCONSIN INC's funders are still giving 3 years after their first grant; 49% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
CLEAN WISCONSIN INC draws 93% of its grant income from funders outside Wisconsin, across 10 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $4.1M arriving through sponsors registered in 13 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
CLEAN WISCONSIN INC runs a healthier operating margin than half of the 1,209 environment nonprofits its size.
this organization peer median middle 50% of peers· 1,209 environment nonprofits $1M–$10M, FY2025
Organizations like CLEAN WISCONSIN INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Wisconsin
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
83% of spending goes to programs.
Governance
Public support
66%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for CLEAN WISCONSIN INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds CLEAN WISCONSIN INC?
- CLEAN WISCONSIN INC (Wisconsin) receives grants from 57 organizations whose IRS filings report $14,014,080 to it, the largest being UNITED STATES ENERGY FOUNDATION ($2,719,500). 28 of them have funded it in more than one year.
- How many funders does CLEAN WISCONSIN INC have?
- IRS filings report 57 organizations giving $14,014,080 in grants to CLEAN WISCONSIN INC, 28 of which have funded it in more than one year.
- Who is the largest funder of CLEAN WISCONSIN INC?
- UNITED STATES ENERGY FOUNDATION is the largest funder on record, with $2,719,500 in grants. The full list of funders is on this page.
- How can an organization like CLEAN WISCONSIN INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Wisconsin. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Clean Wisconsin →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 57 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing