{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T22:03:44Z","timestamp":1769551424653,"version":"3.49.0"},"reference-count":52,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2019,7,23]],"date-time":"2019-07-23T00:00:00Z","timestamp":1563840000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>Renewable forms of energy are increasingly penetrating the electricity market, particularly, geothermal energy. A wide range of resource temperatures and fluid quality are converted mostly using traditional binary power plants and, recently, using Climeon modular units. Portuguese natural geothermal resources are far from precise estimations. Despite the parameter uncertainties, electric power resource estimations of two natural geothermal reservoirs are presented: a volcanic sourced heated high-enthalpy geothermal reservoir in Sete Cidades, S\u00e3o Miguel Island, Azores; and a low-enthalpy geothermal reservoir linked to a fractured zone in a granitic setting in Longroiva, in the northern part of the Portuguese mainland. Based on the volumetric method, we assessed the power potential of geothermal resources in Sete Cidades and Longroiva using a probabilistic methodology\u2014Monte Carlo simulation. The average reserve estimations for Climeon module were 5.66 MWe and 0.64 MWe for Sete Cidades and Longroiva, respectively. This figure was by far higher when compared to traditional binary technology; those differences were mostly attributed to distinct conversions efficiency factors.<\/jats:p>","DOI":"10.3390\/en12142838","type":"journal-article","created":{"date-parts":[[2019,7,23]],"date-time":"2019-07-23T10:44:51Z","timestamp":1563878691000},"page":"2838","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Power Production Estimates from Geothermal Resources by Means of Small-Size Compact Climeon Heat Power Converters: Case Studies from Portugal (Sete Cidades, Azores and Longroiva Spa, Mainland)"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5725-4800","authenticated-orcid":false,"given":"Ant\u00f3nio","family":"Trota","sequence":"first","affiliation":[{"name":"Faculdade de Ci\u00eancias e Tecnologia, Universidade dos A\u00e7ores, Centro de Geoci\u00eancias FCTUC, 9500-801 Ponta Delgada, Portugal"}]},{"given":"Pedro","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Departamento de Engenharia Civil e Arquitetura, Universidade da Beira Interior, 6201-001 Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2367-373X","authenticated-orcid":false,"given":"Luis","family":"Gomes","sequence":"additional","affiliation":[{"name":"Departamento de Engenharia Civil e Arquitetura, Universidade da Beira Interior, GeoBioTec, 6201-001 Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6579-3553","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Cabral","sequence":"additional","affiliation":[{"name":"Faculdade de Ci\u00eancias e Tecnologia, Universidade dos A\u00e7ores, 9500-801 Ponta Delgada, Portugal"}]},{"given":"Peter","family":"Kallberg","sequence":"additional","affiliation":[{"name":"Sylvander Trading Lda, 2765-189 Estoril, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2019,7,23]]},"reference":[{"key":"ref_1","unstructured":"EGEC (European Geothermal Energy Council) (2019, October 01). 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