Geothermal AMTEC system

Michael Schuller, Robert A. LeMire, Kevin Horner-Richardson

Research output: Contribution to journalArticle

3 Citations (Scopus)


The alkali metal thermo-to-electric converter (AMTEC) has reached a level of technological maturity which would allow its use in a constant, unattended thermal source, such as geothermal field. AMTEC cells using sodium as a working fluid require heat input between 500 and 1000°C to generate power. The present state-of-the-art is capable of 15% efficiency with 800°C heat input and has demonstrated 18% efficiency for single cells. This paper discusses the basics of AMTEC operation, current drilling technology as a cost driver, design of modular AMTEC power units, heat rejection technologies, material considerations, and estimates of power production from a geothermal AMTEC concept.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalProceedings of the Intersociety Energy Conversion Engineering Conference
Publication statusPublished - 1995
Externally publishedYes


ASJC Scopus subject areas

  • Fuel Technology
  • Electrical and Electronic Engineering

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