International Sustainable Energy Foundation: $36.9M Revenue, $23.3M Expenses
Austin, Texas · EIN 872509491 · Filing year 2023
International Sustainable Energy Foundation reported $36.9M in total revenue, $23.3M in total expenses, and $45.2M in total assets on its 2023 IRS Form 990. Total compensation for current officers and key employees was $75K (0.20% of revenue). NonprofitTruth efficiency grade: A (83/100).
Source: ProPublica Nonprofit Explorer — IRS Form 990 filings, filing year 2023.
Key Facts (2023 Form 990)
- Total Revenue
- $36.9M
- Total Expenses
- $23.3M
- Total Assets
- $45.2M
- Reserve Months
- 23.3 months
- Surplus / (Deficit)
- $13.6M
- EIN
- 872509491
- Latest 990 Year
- 2023
- Current-Officer Compensation
- $75K
- Officer Comp % of Revenue
- 0.20%
On the NonprofitTruth efficiency rubric, International Sustainable Energy Foundation pulls an A — the highest available grade. The 83/100 composite reflects strong financial reserves, controlled officer compensation, and the kind of multi-year financial discipline that grant-makers look for.
At $36.9M in 2023 revenue, International Sustainable Energy Foundation sits in the mid-range of the U.S. nonprofit distribution. Most organizations of this scale operate regionally or focus on a single program area. Financial health is a strength: International Sustainable Energy Foundation carries a healthy operating-reserve cushion against $23.3M in annual expenses, the kind of balance-sheet stability that helps an organization weather funding gaps without cutting programs.
Multi-year revenue history is incomplete in the available filings, so the trend direction can't be assessed reliably from the current dataset. Officer compensation is modest relative to organizational size: International Sustainable Energy Foundation reports $75,469 in total compensation for current officers and key employees (Form 990 Part IX, line 5) against $36.9M in revenue. The ratio is well within the bands third-party charity raters consider reasonable at this scale. International Sustainable Energy Foundation works in Environment & Animals — environmental, conservation, animal-welfare, and natural-resources programs. The sector spans large international conservation groups and small local land trusts; the financial profile varies accordingly.
How International Sustainable Energy Foundation Compares
International Sustainable Energy Foundation earns a NonprofitTruth efficiency grade of A (83/100). That is 20 points above the Environment & Animals category average. Compensation for current officers and key employees represents 0.20% of total revenue. The organization holds 23.3 months of operating reserves, indicating strong financial cushion.
990 Financial Snapshot
Based on IRS tax-exempt organization data, International Sustainable Energy Foundation reported $36.9M in revenue against $23.3M in total functional expenses for filing year 2023, holding roughly 23.3 months of operating reserves. A program-vs-overhead split is not shown here because total program service expenses (Form 990 Part IX, line 25, column B) are not available in the ProPublica Nonprofit Explorer feed this site ingests; that breakdown can be read directly from the organization’s e-filed 990.
The 990 reports $75K in total compensation for current officers, directors, trustees, and key employees (Part IX, line 5) — 0.20% of total revenue. This is an aggregate across all listed officers; per-person amounts appear on Schedule J.
Revenue History
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International Sustainable Energy Foundation has a NonprofitTruth Efficiency Score of A (83/100), a financial-structure summary based on operating reserves, multi-year revenue consistency, and officer compensation relative to revenue — all drawn from the organization's IRS Form 990.
International Sustainable Energy Foundation, Donor FAQ
International Sustainable Energy Foundation has a NonprofitTruth Efficiency Score of A (83/100), a financial-structure summary based on operating reserves, multi-year revenue consistency, and officer compensation relative to revenue — all drawn from the organization's IRS Form 990.
International Sustainable Energy Foundation reports $75K in total compensation for current officers, directors, trustees, and key employees (IRS Form 990 Part IX, line 5), representing 0.20% of the organization's $36.9M in annual revenue. This is an aggregate figure for all listed officers, not a single executive's salary; per-person pay is detailed on Schedule J of the 990.
International Sustainable Energy Foundation reported $36.9M in annual revenue and $23.3M in total expenses for filing year 2023. The organization holds $45.2M in total assets.
International Sustainable Energy Foundation holds approximately 23.3 months of operating reserves (total assets relative to annual expenses) based on its 2023 IRS Form 990, one input into its A efficiency grade.
International Sustainable Energy Foundation is a registered 501(c) organization with EIN 872509491, based in Austin, Texas. Financial data is sourced from publicly available IRS 990 filings via ProPublica Nonprofit Explorer.
Similar Environment & Animals Nonprofits
Financial data is sourced from IRS Form 990 filings via ProPublica Nonprofit Explorer. The Efficiency Score combines three signals the 990 feed actually reports: financial health / operating reserves (40%), multi-year revenue consistency (35%), and current-officer compensation relative to revenue (25%). It does not include a program-spending ratio, because total program service expenses are not exposed by the ProPublica feed; no program ratio is estimated. Filing data may lag 6-18 months from the tax year.