Play fairway analysis of geothermal resources across the state of Hawaii: 3. Use of development viability criterion to prioritize future exploration targets. (November 2017)

• Record Type: Journal Article
• Authors: Lautze, Nicole; Thomas, Donald; Waller, David; Frazer, Neil; Hinz, Nicholas; Apuzen-Ito, Garrett
• Is Part Of: Geothermics. Volume 70(2017:Nov.)
• Page Start: 406
• Page End: 413
• Publication Date: 2017-11
• Subjects: Hawaii -- Play fairway -- Development viability -- Geothermal -- Exploration; Hydrogeology -- Periodicals; Geothermal resources -- Periodicals; Énergie géothermique -- Périodiques; GEOTHERMAL ENGINEERING; GEOTHERMAL ENERGY; GEOTHERMAL EXPLORATION; Geothermal resources; Hydrogeology; Periodicals; Electronic journals; 621.44
• DOI: 10.1016/j.geothermics.2017.07.005
• Languages: English
• ISSNs: 0375-6505

Abstract

Highlights: Development viability is evaluated in a State of Hawaii geothermal resource assessment. Grid access, hazard vulnerability, land use, and community sentiment are considered. Results are one criterion used to justify roadmap for future exploration activities. Groundwater analyses and/or geophysics are recommended in 10 locations across state. Abstract: A recent Play Fairway Analysis of geothermal prospects in Hawaii identified and compiled data relevant to subsurface heat, fluid, and permeability, and developed and applied a statistical method to integrate the compiled data to produce a map of resource probability across the state. As a final screening of prospective geothermal resources, we considered the viability of development in areas showing an elevated resource probability. This screening was intended to prioritize prospects that have a greater likelihood of proceeding through regulatory review to production in a timely and cost-effective manner. Development viability was determined to be high, medium, or low based on four factors: i) grid accessibility, ii) vulnerability to natural hazards, iii) current and probable future land uses; and iv) community sentiment and acceptance. Development viability was assessed in >10 areas of interest that were selected based on the results of the probability and confidence mapping, and was a guiding criterion used to develop a prioritized roadmap for the next phase of exploration activity in Hawaii. Planned activities include a groundwater sampling and analysis campaign in ∼10 broad areas, and the collection of magnetotelluric and gravity data in 2–5 locations statewide.