![Timothy Callahan](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Timothy B. Callahan was the founder of PrairieGold Solar LLC, founded in 2013, where the title held was Chief Financial Officer.
Mr. Callahan is also the founder of The Climate Capitalist LLC.
Mr. Callahan is Chief Executive Officer & Managing Partner at Development Engine Partners LLC since 2023.
Former jobs include Principal at Fredericks Michael & Co., Chief Financial Officer at Hawkeye Renewables LLC, Principal at Arthur Andersen LLP, and Chief Financial Officer at Hawkeye Energy Holdings LLC.
Education includes an MBA from The University of Chicago Booth School of Business and an undergraduate degree from the University of Colorado Boulder.
| Companies | Position | Start |
|---|
| Companies | Position | End |
|---|---|---|
PrairieGold Solar LLC
 PrairieGold Solar LLC Alternative Power GenerationUtilities Provides financing and development services for distributed generation solar projects | Founder | 01/08/2019 |
The Climate Capitalist LLC
 The Climate Capitalist LLC Internet Software/ServicesTechnology Services Operates as a media and research platform that publishes analysis on climate change, clean energy markets and investment opportunities | Founder | - |
Hawkeye Energy Holdings LLC
 Hawkeye Energy Holdings LLC Chemicals: SpecialtyProcess Industries Manufactures and distributes ethanol | Director of Finance/CFO | - |
Arthur Andersen LLP /Canada/
 Arthur Andersen LLP /Canada/ Miscellaneous Commercial ServicesCommercial Services Provides accounting services | Corporate Officer/Principal | - |
Fredericks Michael & Co.
 Fredericks Michael & Co. Investment ManagersFinance Provides advisory services | Corporate Officer/Principal | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 8 |
|---|---|
Fredericks Michael & Co.
Fredericks Michael & Co. Investment ManagersFinance Provides advisory services | Finance |
Hawkeye Renewables LLC
 Hawkeye Renewables LLC Oil & Gas ProductionEnergy Minerals Manufactures and distributes ethanol | Energy Minerals |
Arthur Andersen LLP /Canada/
Arthur Andersen LLP /Canada/ Miscellaneous Commercial ServicesCommercial Services Provides accounting services | Commercial Services |
Hawkeye Energy Holdings LLC
Hawkeye Energy Holdings LLC Chemicals: SpecialtyProcess Industries Manufactures and distributes ethanol | Process Industries |
The University of Chicago Booth School of Business
 The University of Chicago Booth School of Business Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Colorado Boulder
 University of Colorado Boulder Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
PrairieGold Solar LLC
PrairieGold Solar LLC Alternative Power GenerationUtilities Provides financing and development services for distributed generation solar projects | Utilities |
The Climate Capitalist LLC
The Climate Capitalist LLC Internet Software/ServicesTechnology Services Operates as a media and research platform that publishes analysis on climate change, clean energy markets and investment opportunities | Technology Services |
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