William Sprague

President at Geothermal Alliance of Illinois

Fiscal year ended December 31, 2023. Published on January 25, 2026.

2023

Total compensation

William Sprague has been listed as an employee of Geothermal Alliance of Illinois in Form 990 filings since fiscal year 2021.

Annual compensation details

President

2023

President

2022

Vice President

2021

2023

Other employees at Geothermal Alliance of Illinois

Kathleen Ridley

Assistant Executive Director

$25,000

$25,000 from org—No other comp

John Freitag

Executive Director

$25,000

$25,000 from org—No other comp

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2023

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Revisions to this profile

January 25, 2026:

2023 Geothermal Alliance of Illinois 990 published

January 25, 2026:

2022 Geothermal Alliance of Illinois 990 published

January 25, 2026:

2021 Geothermal Alliance of Illinois 990 published

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