# ThermaSource

> ThermaSource is a Santa Rosa geothermal engineering and drilling contractor founded by Louis E. Capuano Jr. in 1980. After decades as a consultancy, it began buying rigs when geothermal developers struggled to secure drilling capacity. It later added cementing, drilling fluids and geological logging to offer more of the well construction process under one umbrella. Its documented work includes projects in the United States and Nicaragua.

- **Founded:** 1980
- **Headquarters:** Santa Rosa, United States
- **Founders:** Louis E. Capuano Jr. (Founder and chief executive officer)
- **Products:** Geothermal engineering and consulting, Contract drilling, Cementing, Drilling fluids and mud logging
- **Notable:** Grew from three employees in 2006 to more than 235 in 2008, according to contemporary trade coverage., Expanded from one refurbished rig to eight owned rigs by August 2008, with two more on order., Drilled the 2009 deep geothermal well at Oregon Institute of Technology's Klamath Falls campus.

## Products & services

- **Geothermal engineering and consulting** — Drilling engineering, project management, resource and well planning for geothermal projects.
- **Contract drilling** — Staffed rigs for geothermal exploration and production wells; the rig-owning business began in 2006.
- **Cementing** — Well cementing through ThermaSource Cementing, added as the company expanded into integrated field services.
- **Drilling fluids and mud logging** — Fluids and geological logging through ChemTech and Tecton Geologic, supporting decisions during drilling.

## Achievements

- Grew from three employees in 2006 to more than 235 in 2008, according to contemporary trade coverage.
- Expanded from one refurbished rig to eight owned rigs by August 2008, with two more on order.
- Drilled the 2009 deep geothermal well at Oregon Institute of Technology's Klamath Falls campus.
- Served as drilling contractor for the San Jacinto geothermal expansion in Nicaragua, according to IFC project disclosure.

## Latest updates

- **2014-04** — A Geothermal Resources Council Bulletin advertisement still presented ThermaSource Drilling, ThermaSource Cementing and Tecton Geologic as a combined service group.
- **2010-05** — IFC project disclosure named ThermaSource as the drilling contractor for Nicaragua's San Jacinto geothermal expansion.
- **2009-03** — Oregon Tech's deep well reached roughly 5,300 feet, but lower-than-target temperatures and funding limits ended drilling.

## Links

- Website: http://www.thermasource.com
- LinkedIn: https://www.linkedin.com/company/thermasource-inc-

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Last updated: 2026-09-30