International District Energy Association
The association six convention goers founded in Toledo in 1909 for the companies that heat buildings from a central plant, grown into an international table where the operators of hidden thermal networks and the firms that supply them meet, measure each other and make the case for pipes most people never see.
Financial profile
International District Energy Assn · EIN 52-1918849 · 501(c)(6)
| Fiscal year | Total revenue | Contributions | Program services | Total expenses | Net assets | Year end |
|---|---|---|---|---|---|---|
| FY2025 | $6,367,030 | $165,326 | $5,909,648 | $5,691,653 | $7,852,662 | Dec 2025 |
| FY2024 | $6,194,079 | $0 | $5,906,407 | $5,295,844 | $7,177,285 | Dec 2024 |
| FY2023 | $5,671,739 | $0 | $5,427,412 | $4,875,804 | $6,279,050 | Dec 2023 |
| FY2022 | $5,321,001 | $0 | $5,273,329 | $4,083,907 | $5,483,111 | Dec 2022 |
| FY2021 | $4,433,245 | $185,557 | $4,247,368 | $3,082,188 | $4,246,017 | Dec 2021 |
| FY2020 | $2,274,322 | $0 | $2,262,790 | $3,196,279 | $2,894,960 | Dec 2020 |
Figures exactly as reported. A blank cell was blank on the form. The fiscal year links to the filing.
Peer societies
Five societies IDEA is read alongside.
APPA
American Public Power Association
The national association of community-owned electric utilities, representing the public power systems owned…
49 companies named
A
ASHRAE
A technical society whose authoritative standards for building energy, ventilation, and indoor air quality…
12 companies named
NHA
National Hydropower Association
The trade association of the companies that own, build and supply American water power, working to keep an…
47 companies named
AEE
Association of Energy Engineers
The credentialing home of the energy manager, founded in 1977, which turned the work of cutting energy use in…
145 companies named
AESP
Association of Energy Services Professionals
The professional home of the people who design and deliver utility customer energy programs, begun in 1989 by…
5 companies named
Who backs IDEA
Every company IDEA names publicly as a supporter, exactly as published. Companies also named by other associations on Sociogene come first.
| Company | Support as published | Also named by |
|---|---|---|
| Burns & McDonnell | Meeting sponsor | ANS ACMP DACC EEI GHP +3 |
| Eaton.png | Meeting sponsor | AACC B DCC EEI EI +3 |
| Empower | Meeting sponsor | CADA CCA IFEBP NAGDC NASRA +3 |
| Jacobs.png | Meeting sponsor | AAPA ACECN APTA AWRA AWWA +3 |
| Johnson Controls, Inc. | Meeting sponsor | AEE AFSA A AI DCC +3 |
| Olsson | Meeting sponsor | AHMP APA AREMW ASES AWWA +3 |
| Owens Corning FOAMGLAS | Exhibitor | AAOHN AIA CRCC CFA CDRA +3 |
| PwC | Meeting sponsor | ACC AHLA A AFP BAI +3 |
| Stantec Consulting Ltd. | Meeting sponsor | AWMA APTA AREMW AWRA AWWA +3 |
| Trane | Meeting sponsor | AEE AAOHN A BOMAI CACC +3 |
| Veolia | Exhibitor | AHMP AAUW ASES AIST MC +3 |
| Victaulic | Exhibitor | AKC AFSA ASPE ASA NAEC +3 |
| Whiting Turner | Meeting sponsor | AACC AZA CBICC GCP MCCC +3 |
| WSP | Meeting sponsor | AWMA AAPA ACECN APA APTA +3 |
| Xylem | Exhibitor | ASCA ACC AWWA AWWAC CERF +3 |
| PCL Construction | Meeting sponsor | AREMW AWWA CCC DBIA NRCMA +2 |
| Siemens Energy | Meeting sponsor | EEI GRCC NPPA PRCI SS +1 |
| Carrier Corporation | Exhibitor | MCAA NAHB NASEO S |
| ChemTreat, Inc. | Exhibitor | AISI AIST MBAA AA |
| Emerson | Exhibitor | AEE API MCCI NFPA |
| Grundfos.png | Meeting sponsor | ASPE A NGWA WateReuse |
| Ramboll | Meeting sponsor | AWMA NACWA NAEM ULI |
| Armstrong Fluid Technology | Exhibitor | AIST NFPA SFPE |
| Badger Meter | Exhibitor | AWWA RAMC WateReuse |
| CHA Consulting, Inc. | Exhibitor | CRCC EEI BCNYS |
| Salas O'Brien | Exhibitor | AOCS IES ICRI |
| Stanley Consultants | Meeting sponsor | AAEES NPPA SAME |
| Chem-Aqua, Inc. | Meeting sponsor | PIA USPEA |
| Cordia | Meeting sponsor | BOMAI PCBI |
| GEA North America | Exhibitor | MBAA SPE |
| RoviSys | Meeting sponsor | ISPE AMT |
| Solar Turbines Incorporated | Meeting sponsor | INGAA PRCI |
| Vicinity Energy | Meeting sponsor | GKCCC GOCC |
| Affiliated Engineers | Meeting sponsor | AKC |
| Armstrong International | Exhibitor | ASPE |
| Baltimore Aircoil Company | Exhibitor | AA |
| Black & McDonald Limited | Meeting sponsor | EEI |
| BOND | Meeting sponsor | GBCC |
| CB&I | Exhibitor | API |
| CleanAir Engineering | Exhibitor | AWMA |
| Corix | Meeting sponsor | GCP |
| DN | Exhibitor | AWWA |
| DSA, Inc. | Exhibitor | NSSF |
| EnergyCAP | Exhibitor | AEE |
| Everllence | Exhibitor | CLIA |
| KFI_Engineers.png | Meeting sponsor | SFPE |
| Kurita America | Exhibitor | AIST |
| Nalco Water, an Ecolab Company | Exhibitor | AMPP |
| Siemens_Smart_Infrastructure.png | Meeting sponsor | EI |
| Walker Blue, LLC | Exhibitor | AEE |
| 2G Energy Inc. | Meeting sponsor | Only IDEA, so far |
| Accruent | Exhibitor | Only IDEA, so far |
| ADAMS Valves, Inc. | Exhibitor | Only IDEA, so far |
| Aecon Utilities | Exhibitor | Only IDEA, so far |
| AEP-THERMAL Inc. | Exhibitor | Only IDEA, so far |
| AIC Heat Exchangers | Exhibitor | Only IDEA, so far |
| Aquatherm/PipeXSolutions | Exhibitor | Only IDEA, so far |
| Armour Valve/Boehmer/Radpol Pipes | Exhibitor | Only IDEA, so far |
| bbb architects Ottawa Inc. | Meeting sponsor | Only IDEA, so far |
| Bray Commercial Division | Exhibitor | Only IDEA, so far |
| Brightcore.png | Meeting sponsor | Only IDEA, so far |
| Brugg Pipes | Exhibitor | Only IDEA, so far |
| BTY | Meeting sponsor | Only IDEA, so far |
| Caldwell/Preload | Exhibitor | Only IDEA, so far |
| Capture H2O | Exhibitor | Only IDEA, so far |
| Centerstream | Meeting sponsor | Only IDEA, so far |
| CenTrio | Meeting sponsor | Only IDEA, so far |
| Chromalox | Exhibitor | Only IDEA, so far |
| Cleaver-Brooks | Exhibitor | Only IDEA, so far |
| Composite Cooling Solutions | Exhibitor | Only IDEA, so far |
| Cooney Technologies | Exhibitor | Only IDEA, so far |
| Doherty Engineering Inc. | Exhibitor | Only IDEA, so far |
| EagleHawk One Inc. | Exhibitor | Only IDEA, so far |
| Ecosystem.png | Meeting sponsor | Only IDEA, so far |
| Edgecom Energy | Exhibitor | Only IDEA, so far |
| Enwave Energy Corporation | Meeting sponsor | Only IDEA, so far |
| Equans Services | Meeting sponsor | Only IDEA, so far |
| EVAPCO | Exhibitor | Only IDEA, so far |
| Flow Control Industries, Inc. | Exhibitor | Only IDEA, so far |
| FT Energy Co., Ltd. | Exhibitor | Only IDEA, so far |
| FVB Energy Inc. | Meeting sponsor | Only IDEA, so far |
| Gaumer Process | Exhibitor | Only IDEA, so far |
| GF Urecon Ltd | Meeting sponsor | Only IDEA, so far |
| Gilsulate International, Inc. | Exhibitor | Only IDEA, so far |
| Gradyent | Exhibitor | Only IDEA, so far |
| Ground Exchange Operations | Exhibitor | Only IDEA, so far |
| HanAra Software | Exhibitor | Only IDEA, so far |
| HUBER Technology, LLC. | Exhibitor | Only IDEA, so far |
| HyAxiom, Inc. THE CLEAN ENERGY YOU COUNT ON™ | Exhibitor | Only IDEA, so far |
| IC_Thomasson_Associates.png | Meeting sponsor | Only IDEA, so far |
| IMI | Exhibitor | Only IDEA, so far |
| Imperium Technologies | Exhibitor | Only IDEA, so far |
| Indeck Power Equipment Company | Exhibitor | Only IDEA, so far |
| Infra Pipes | Exhibitor | Only IDEA, so far |
| INNIO Group - Jenbacher Solutions | Exhibitor | Only IDEA, so far |
| Innovate Energy | Exhibitor | Only IDEA, so far |
| Isoplus | Exhibitor | Only IDEA, so far |
| J.L. Richards & Associates Limited | Exhibitor | Only IDEA, so far |
| Kerr Wood Leidal Associates Ltd. (KWL) | Meeting sponsor | Only IDEA, so far |
| Kyotherm | Exhibitor | Only IDEA, so far |
| Magnus 1946 Chemicals Ltd. | Exhibitor | Only IDEA, so far |
| Maxi-Therm | Exhibitor | Only IDEA, so far |
| McCrometer Inc. | Exhibitor | Only IDEA, so far |
| Midwest Geothermal | Exhibitor | Only IDEA, so far |
| Miura Canada Co., Ltd. | Exhibitor | Only IDEA, so far |
| Northern Blower Inc. | Exhibitor | Only IDEA, so far |
| Nupi Americas, Inc. | Exhibitor | Only IDEA, so far |
| ONICON Incorporated | Exhibitor | Only IDEA, so far |
| Optimum Energy | Meeting sponsor | Only IDEA, so far |
| OPTIT Corp. | Exhibitor | Only IDEA, so far |
| PERMA-PIPE, Inc. | Exhibitor | Only IDEA, so far |
| Preston Phipps Inc. | Exhibitor | Only IDEA, so far |
| Primoris Energy Services Corporation | Exhibitor | Only IDEA, so far |
| PRVN Consultants, Inc. | Meeting sponsor | Only IDEA, so far |
| QMC Metering Solutions | Exhibitor | Only IDEA, so far |
| Ratmon, N.A. | Exhibitor | Only IDEA, so far |
| Reliability Efficiency & Optimization LLC | Exhibitor | Only IDEA, so far |
| Rentech Boiler Systems, Inc. | Exhibitor | Only IDEA, so far |
| RMH-BlackBlue-Logo.png | Meeting sponsor | Only IDEA, so far |
| Rock Energy Storage | Exhibitor | Only IDEA, so far |
| Rotating Machinery Services | Exhibitor | Only IDEA, so far |
| Rovanco Piping Systems | Exhibitor | Only IDEA, so far |
| Sandale Utility Products | Exhibitor | Only IDEA, so far |
| SHARC Energy | Exhibitor | Only IDEA, so far |
| SiFi Engineering and Fabrication Ltd. | Exhibitor | Only IDEA, so far |
| Simoneau | Meeting sponsor | Only IDEA, so far |
| Smardt | Exhibitor | Only IDEA, so far |
| Somerville Appalachian Pipeline Contractors | Meeting sponsor | Only IDEA, so far |
| Spirax Sarco Canada Ltd. | Exhibitor | Only IDEA, so far |
| Spirotherm, Inc. | Exhibitor | Only IDEA, so far |
| SPX Cooling Tech | Exhibitor | Only IDEA, so far |
| SSS Clutch Company, Inc. | Exhibitor | Only IDEA, so far |
| SWEP North America, Inc. | Exhibitor | Only IDEA, so far |
| Syntec Process Equipment | Exhibitor | Only IDEA, so far |
| ThermaCity Energy | Exhibitor | Only IDEA, so far |
| Thermacor Process Inc. | Exhibitor | Only IDEA, so far |
| Thermo Systems | Meeting sponsor | Only IDEA, so far |
| Thermofin | Exhibitor | Only IDEA, so far |
| Vexve | Exhibitor | Only IDEA, so far |
| Victory Energy Operations | Exhibitor | Only IDEA, so far |
| Vilter | Exhibitor | Only IDEA, so far |
| Wabash Power Equipment Company | Exhibitor | Only IDEA, so far |
| Weishaupt Corporation | Exhibitor | Only IDEA, so far |
| WELLFAB Services LTD. | Exhibitor | Only IDEA, so far |
| Wiley_Wilson.png | Meeting sponsor | Only IDEA, so far |
| Wired Synergy | Meeting sponsor | Only IDEA, so far |
| Zeta Boiler | Exhibitor | Only IDEA, so far |
| Zwick Valves N.A. | Exhibitor | Only IDEA, so far |
Sources: 5 published lists, read October 2026
Awards & Scholarships. Read October 2, 2026. Company named as underwriter of the Patti Wilson Leadership Program.
CampusEnergy2027 Sponsors to Date. Read October 2, 2026. Sponsors announced so far for CampusEnergy2027 in San Diego.
IDEA2026 Exhibitors. Read October 2, 2026. Exhibitors in the IDEA2026 annual conference trade show in Ottawa.
IDEA2026 Sponsors. Read October 2, 2026. Sponsors of IDEA2026, the annual conference held in Ottawa in June 2026 and its ribbon cutting event.
Sustaining Sponsors. Read October 2, 2026. Annual Sustaining Sponsors shown on the IDEA homepage.
Who backs IDEA's peers, but not IDEA
Companies named publicly by at least one of IDEA's five peer societies, and not found in IDEA's reviewed public records.
The outside view
The association six convention goers founded in Toledo in 1909 for the companies that heat buildings from a central plant, grown into an international table where the operators of hidden thermal networks and the firms that supply them meet, measure each other and make the case for pipes most people never see.
- Consensus
- Build
- Inward
- Operational
Their shape
The League
Far-flung, and stronger for it.
The League is a federation of many, where the value lives in the connections between its members and chapters. Its gift is reach and resilience, its challenge is holding a shared identity across all its parts.
Also reads toward The Frontier and The Legacy.
Strengths
Not an official page of International District Energy Association. Sociogene does not consult. Everything here comes from public sources, dated and linked. Something wrong here? Tell us what we missed.