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California · Nonprofit

WATTTIME CORPORATION

WATTTIME CORPORATION (California) receives grants from 17 organizations whose IRS filings report $20,260,734 to it, the largest being TIDES FOUNDATION ($6,896,637). 9 of them have funded it in more than one year.

Revenue FY2025
$16M
Funders on record
17
Grants received
$20M
Net assets
$7.1M
9/17 repeat funderspeak grant-dependency 70%
01What it does

What Watttime Corporation does

Mission

To raise awareness about the potential to reduce environmental harm by shifting electricity use to particular times; to encourage the development and spread of common protocols for this practice.

As stated on its FY2025 Form 990.

Program

  1. Below are some key highlights of watttimes progress on several fronts in fy25. 1. Aer assistance: watttime continued to grow the number of people we were able to help automate their devices to shift electricity to times that reduce environmental harm (which we call automated emissions reduction or aer). In fy25 we supported over 1 billion devices to use aer. 2. Aer education: we also continued to raise awareness of aer through giving talks, news publication, and by publishing free data to enable aer free on several sites, such as carbontreasuremap.org, and gridemissionsdata.io. 3. Research to make aer more effective: in fy25 we developed a novel technique to make aer even more effective at reducing environmental harm, by adding in build marginal emissions data. More information at gem.wiki/mbers. 4. Supporting harmonization of methods. In fy25, watttime continued to support the development and spread of common protocols to shift electricity use to cleaner time, most notably by supporting the technical working group for the widely used greenhouse gas protocol. 5. Climate trace emissions data research: watttime serves as both the electricity sector lead, and the overall coordinating…

    $16,233,366 spentof which $5,130,937 as grants$3,011,001 earned by the program
    100% of program spending

The program described on its FY2024 Form 990. Program spending in total: $16,233,366.

02The organization over time

The organization over time

Each line starts at 100 in 2018, so what you read is the shape rather than the size: 150 means half as much again as 2018, 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.

100 = 20182018 Revenue 100 ($577k) Expenses 100 ($1.1M) Net assets -40 ($-493355)2019 Revenue 280 ($1.6M) Expenses 135 ($1.4M) Net assets -26 ($-325101)2020 Revenue 890 ($5.1M) Expenses 335 ($3.6M) Net assets 100 ($1.2M)2021 Revenue 1552 ($9.0M) Expenses 644 ($6.9M) Net assets 268 ($3.3M)2022 Revenue 2313 ($13M) Expenses 1120 ($12M) Net assets 381 ($4.7M)2023 Revenue 2096 ($12M) Expenses 1165 ($12M) Net assets 347 ($4.3M)2024 Revenue 3692 ($21M) Expenses 1568 ($17M) Net assets 714 ($8.8M)2025 Revenue 2852 ($16M) Expenses 1693 ($18M) Net assets 578 ($7.1M)
'18'19'20'21'22'23'24'25
Revenue (2852)Expenses (1693)Net assets (578)Peer revenue range

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 $11M to $18M (+63%).

$461k
$1.4M
$3.1M
$5.6M
$7.2M
$5.8M
$11M
$18M
'18'19'20'21'22'23'24'25
Total assetsTotal liabilities

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.

2018
2019
2020
2021
2022
2023
2024
2025
ContributionsProgram revenueInvestmentOther

81% of WATTTIME CORPORATION’s revenue is contributions — more donation-reliant than the typical peer (52% for the typical peer).

This organization
Typical peer · 155 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 8 reported years ran a deficit.

−$493k
’18
$168k
’19
$1.6M
’20
$2.1M
’21
$1.3M
’22
−$375k
’23
$4.5M
’24
−$1.7M
’25
4.6
months of
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.

Board chair

Lynn Thoman

Chair

As listed on its FY2025 Form 990.

'18'19'20'21'22'23'24'25
Listed6661111111010
Joined·+1+1+6+1+4+3+1
No longer listed·1111441
03Who funds it

Who funds it, year by year

2018 → 2023: the base broadened from 2 funders to 9 funders, grant income rose $75k → $8.5M.

5 of 17 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 35% 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 WATTTIME CORPORATION’s funders (the co-funder graph). 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

WATTTIME CORPORATION leans on a few funders — its largest provides 34% of grant income and the top three 77%; half comes from just 2 funders.

the vertical line marks half of all grant income — 2 funders to its left

55% 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 WATTTIME CORPORATION.

34%
largest funder
77%
top three
~4
effective funders

Largest funder’s share by year: 2018 67% · 2019 90% · 2020 45% · 2021 42% · 2022 53% · 2023 35% — 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

50% of WATTTIME CORPORATION's funders are still giving 3 years after their first grant; 53% give in more than one year at all.

first grant+1y+2y+3y+4y

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

WATTTIME CORPORATION draws 57% of its grant income from funders outside California, across 7 states in all.

NY
MA
WY
CA
CO
DE
GA

In-state vs out-of-state, by year

’18
’19
’20
’21
’22
’23
California out of state home

Funder states come from each funder’s own filing. $7.2M arriving through sponsors registered in 5 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.

04Its place in the field

Against its field

WATTTIME CORPORATION has grown faster than three-quarters of the 78 science & tech nonprofits its size.

Operating margin−10% · bottom quartile
Months of reserve4.6mo · above the median
Revenue growth (annualized)61% · top quartile

this organization peer median middle 50% of peers· 78 science & tech nonprofits $10M–$100M, FY2025

Organizations like WATTTIME CORPORATION

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 California

Nationally

05Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Where the money goes

90% of spending goes to programs.

Program 90%Management 10%Fundraising 1%

Governance

3
board members
67%
independent
✓Conflict-of-interest policy✓Whistleblower policy✓Document retention✓Board reviewed the 990✓Audited financials

Public support

38%

Share of support from the public (Schedule A) — the basis for its public-charity status.

Footprint & structure

Files a return copy in 1 state

CA

Screen this organization

A dated, signed PDF of the compliance screen for WATTTIME CORPORATION: 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.

A paid feature, included from the $75 plan up. Sign in to download.

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 WATTTIME CORPORATION?
WATTTIME CORPORATION (California) receives grants from 17 organizations whose IRS filings report $20,260,734 to it, the largest being TIDES FOUNDATION ($6,896,637). 9 of them have funded it in more than one year.
How many funders does WATTTIME CORPORATION have?
IRS filings report 17 organizations giving $20,260,734 in grants to WATTTIME CORPORATION, 9 of which have funded it in more than one year.
Who is the largest funder of WATTTIME CORPORATION?
TIDES FOUNDATION is the largest funder on record, with $6,896,637 in grants. The full list of funders is on this page.
How can an organization like WATTTIME CORPORATION find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in California. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2018–2025), and the filings of 17 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 14, 2026. What this page cannot tell you · view filing