400 W facility of geothermal thermoelectric generators from hot dry rocks on the Canary Islands
| dc.contributor.author | Alegría Cía, Patricia | |
| dc.contributor.author | Pascual Lezaun, Nerea | |
| dc.contributor.author | Catalán Ros, Leyre | |
| dc.contributor.author | Araiz Vega, Miguel | |
| dc.contributor.author | Astrain Ulibarrena, David | |
| dc.contributor.department | Institute of Smart Cities - ISC | en |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | |
| dc.date.accessioned | 2025-06-23T16:16:07Z | |
| dc.date.available | 2025-06-23T16:16:07Z | |
| dc.date.issued | 2025-06-01 | |
| dc.date.updated | 2025-06-23T15:56:40Z | |
| dc.description.abstract | Geothermal energy has a great potential to be harnessed and requires a boost in technologies to enhance its use. The Canary Islands have a great dependence on fossil fuels, and Lanzarote has important geothermal anomalies currently unexploited due to the absence of water in the soil, what hinders the use of vapour turbines. This work presents the development of the first facility of geothermal thermoelectric generators operating in the world. This novel generators are producing 400 W of power in Timanfaya National Park. It has three geothermal thermoelectric generators, each with 4 thermosyphons per borehole and 40 thermoelectric modules that directly transform heat into electricity. This facility, with the advantages of geothermal energy such as continuity and independence on the weather, requires low maintenance because it does not require moving parts nor water consumption. That makes feasible for the first time to harness the geothermal potential in Lanzarote, producing an electric energy of 9.4 kWh per day, which means 3.42 MWh per year. The field installation of this novel technology has enabled to accurately calculate the Levelized Cost of Energy, which is 0.22 €/kWh. Although a 29% decrease in the power generated by thermoelectric module was detected when installing a GTEG with 40 modules with respect to a GTEG with 10 modules, this decrease is compensated by the fact that by installing more modules, the electrical production per borehole is optimized, reducing the LCOE. The developed facility will avoid the emission of 2.3 tons of CO2 and is totally respectful with the environment if compared to conventional geothermal power plants. | en |
| dc.description.sponsorship | We would like to acknowledge the support of the Spanish State Research Agency and FEDER-UE under the grants TED2021-129359B-I00 and PID2021-124014OB-I00 . We would also like to acknowledge the support of the Official School of Industrial Engineers of Navarre with the scholarship Fuentes Dutor. Open access funding provided by the Public University of Navarre . | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Alegría, P., Pascual, N., Catalán, L., Araiz, M., Astrain, D. (2025) 400 W facility of geothermal thermoelectric generators from hot dry rocks on the Canary Islands. Sustainable Energy Technologies and Assessments, 78, 1-10. https://doi.org/10.1016/j.seta.2025.104338. | |
| dc.identifier.doi | 10.1016/j.seta.2025.104338 | |
| dc.identifier.issn | 2213-1388 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/54293 | |
| dc.language.iso | eng | |
| dc.publisher | Elsevier | |
| dc.relation.ispartof | Sustainable Energy Technologies and Assessments 78, 2025, 104338 | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI//TED2021-129359B-I00/ | |
| dc.relation.projectID | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-124014OB-I00/ES/ | |
| dc.relation.publisherversion | https://doi.org/10.1016/j.seta.2025.104338 | |
| dc.rights | © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license. | |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Thermoelectric generator | en |
| dc.subject | Geothermal energy | en |
| dc.subject | Renewable electricity | en |
| dc.subject | Geothermal anomaly | en |
| dc.title | 400 W facility of geothermal thermoelectric generators from hot dry rocks on the Canary Islands | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/publishedVersion | |
| dspace.entity.type | Publication | |
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