CO2 plume geothermal (CPG) and the earth battery - Innovative, dispatchable geothermal power production and geologic energy storage using non-water working fluids

Jimmy B. Randolph

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

CO2 Plume Geothermal (CPG) and Earth Battery technologies constitute a continuum of renewable power and geologic energy storage systems that are innovative in their use of non-water, and combinations of water and non-water, fluids as the working media to harness geothermal heat and store energy in permeable subsurface formations. These non-water fluids - primarily CO2, but also nitrogen and air - are expected to allow a dramatic expansion of the areas worldwide where geothermal power and bulk aquifer energy storage can be technically and economically deployed (e.g., Randolph and Saar (2011); Buscheck et al. (2016)). Ultimately, our approach will use CO2 as a below-ground working fluid, with each system using MMtonnes of CO2, helping to turn CO2 from a liability into a renewable power resource. Here, we discuss non-water geo-energy technologies in the context of existing power generation and energy storage systems. We discuss the current state of academic research and make note of next steps in the planned commercial deployment of these new geo-energy technologies.

Original languageEnglish (US)
Title of host publicationGeothermal's Role in Today's Energy Market - Geothermal Resources Council 2018 Annual Meeting, GRC 2018
PublisherGeothermal Resources Council
Pages1543-1556
Number of pages14
ISBN (Electronic)0934412235
StatePublished - 2018
EventGeothermal Resources Council 2018 Annual Meeting: Geothermal's Role in Today's Energy Market, GRC 2018 - Reno, United States
Duration: Oct 14 2018Oct 17 2018

Publication series

NameTransactions - Geothermal Resources Council
Volume42
ISSN (Print)0193-5933

Other

OtherGeothermal Resources Council 2018 Annual Meeting: Geothermal's Role in Today's Energy Market, GRC 2018
Country/TerritoryUnited States
CityReno
Period10/14/1810/17/18

Keywords

  • Baseload
  • CO2
  • Carbon Dioxide
  • Dispatchable
  • Energy Storage
  • Geothermal

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