Mission
Research and development of geothermal systems
Public Charity
Hotrock Energy Research Organization
Hotrock Energy Research Organization is a Public Charity headquartered in Seattle, WA. Financial data from the 2025 filing: $712K revenue, $695K expenses, $43K total assets. 1 publicly reported grants to this organization, totaling roughly $36K, appear in IRS filings.
EIN: 473849152
Seattle, WA
Engineering & Technology
NTEE: U40
Latest filing: 2025
Total Revenue$712K
Total Expenses$695K
Total Assets$43K
Grant Records1
Funding Total$36K
Filing Years2020–2025
Where $100 goes at Hotrock Energy Research Organization
How Hotrock Energy Research Organization divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.
$93
Programs
the work itself
$7
Management
running the organization
$0
Fundraising
none reported
No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.
Inside the $93 for programs
$93
Provide education and outreach, perform research and testing, and provide feasibility studies and pilot projects to move geothermal technology forward
Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.
Sample Grants Received
TO SUPPORT THE LAUNDRY LIST PROJECT
$36,000
Showing up to 5 of 1 total records — full history available with membership.
Officers & Directors
Director
Britt Ide
Director, Secretary
Jill Watz
Director
Steven Klein
President, Treasurer
Susan Petty
Director
Tim Mcdonald
Officer compensation and complete director data available with membership.
Top Grant Purposes
Financial Trends
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $712K | $695K | $43K |
| 2024 | $306K | $326K | $25K |
| 2023 | $115K | $84K | $45K |
| 2022 | $174K | $170K | $16K |
| 2020 | $189K | $187K | $11K |
Between 2020 and 2025, reported annual revenue grew from $189K to $712K (+276%), with total assets most recently reported at $43K.
Interactive year-over-year charts and full filing details available with membership.