National spatio-technical potential for PTES in Sweden: A first-order assessment by criteria screening
Main Article Content
Abstract
For Sweden, a country with one of the most developed district heating sectors in the world, the continued decarbonisation of central heat supplies and the contemporary development towards lower heat distribution temperatures is generating increased interest in large-scale seasonal thermal energy storage technologies. By virtue, not only of energy storage, but also of load shifting and peak shaving capabilities, seasonal storages are recognised today as key components in highly integrated and smart energy systems but have so far seen very limited application in Sweden. Given that Denmark, neighbour to Sweden and with a district heating development on par, is a world-leader in the application of pit thermal energy storages (PTES), this paper aims to initiate investigations into the possibilities for a similar application in Sweden. A spatial analysis sequence, akin to indicator modelling, identifies suitable areas for the construction of PTES by elimination of non-suitable areas based on a set of input data parameters and associated selection criteria, all within cost-effective heat transmission distances of aggregated district heating areas. The national potential in terms of available suitable land, expressed and discussed here by two model extremes scenarios, is generally high, but with local variations and with a characteristic latitudinal difference.
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References
[1] Lund, H., Østergaard, P.A., Connolly, D., Ridjan, I., Mathiesen, B.V., Hvelplund, F., Thellufsen, J.Z., and Sorknæs, P., Energy Storage and Smart Energy Systems. International Journal of Sustainable Energy Planning and Management 11(0) (2016) p 3-14. DOI: https://doi.org/10.5278/ijsepm.2016.11.2.
[2] Guelpa, E. and Verda, V., Thermal energy storage in district heating and cooling systems: A review. Applied Energy 252 (2019) p 113474. DOI: https://doi.org/10.1016/j.apenergy.2019.113474.
[3] Gadd, H. and Werner, S., Thermal energy storage systems for district heating and cooling, in Advances in Thermal Energy Storage Systems: Methods and Applications. 2015. Elsevier Inc. Available at (2025-04-15): https://doi.org/10.1533/9781782420965.4.467
[4] Tosatto, A., Dahash, A., and Ochs, F., Simulation-based performance evaluation of large-scale thermal energy storage coupled with heat pump in district heating systems. Journal of energy storage 61 (2023) p 106721. DOI: https://doi.org/10.1016/j.est.2023.106721.
[5] Helden, W., Leusbrock, I., Odonovan, K., Reisenbichler-S, M., Riegler, T., Knabl, S., Wallner, G., Peham, L., Pugstaller, R., Muser, C., Drucker, P., Moser, M., Ochs, F., Tosatto, A., Dahash, A., Bianchi-Janetti, M., and Seidnitzer-Gallien, C., Giga-scale thermal energy storage for renewable districts - Publishable Final Report. 2021. Available at (2025-04-15): https://www.researchgate.net/publication/368636139_Giga-scale_thermal_energy_storage_for_renewable_districts_-_Publishable_Final_Report.
[6] Gadd, H., Atabaki, M.S., Gong, M., Möllerström, E., Norrström, H., Ottermo, F., Persson, U., Sánchez-García, L., and Werner, S., 70 New Possibilities for District Heating. 2024. Report 2024:1040. Energiforsk, Swedish Energy Research Centre. Available at (2024-08-29): https://energiforsk.se/program/futureheat/rapporter/70-new-possibilities-for-district-heating/.
[7] Xiang, Y., Xie, Z., Furbo, S., Wang, D., Gao, M., and Fan, J., A comprehensive review on pit thermal energy storage: Technical elements, numerical approaches and recent applications. Journal of Energy Storage 55 (2022) p 105716. DOI: https://doi.org/10.1016/j.est.2022.105716.
[8] EU-Treasure. Demonstrating large pit thermal energy storages. 2024. [cited 3 March]. Available at: https://www.treasure-project.eu/.
[9] Dannemand Andersen J., Bødker L., and Jensen M.V. Large Thermal Energy Storage at Marstal District Heating in Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering. 2013. Paris, France. Available at (2025-03-12): https://www.cfms-sols.org/sites/default/files/Actes/3351-3354.pdf.
[10] PlanEnergi, SUNSTORE 3, Phase 2, Implementation. 2015. Final Report. PlanEnergi. Available at (2025-03-12): https://planenergi.eu/wp-content/uploads/2023/09/SUNSTORE-3-Phase-2-Implementation.pdf.
[11] Danish Energy Agency, Technology Data – Energy storage. 2018. Version number: 0009. Danish Energy Agency and Energinet. Available at (2025-03-12): https://ens.dk/en/analyses-and-statistics/technology-data-energy-storage.
[12] Eurostat, SHARES (Renewables). Energy from renewable sources. SHARES detailed results. 2024. Downloaded datasets for 2004 - 2020 and 2021 - 2022. Eurostat. Your key to European statistics. European Commission. Luxembourg. Available at (2024-07-03): https://ec.europa.eu/eurostat/web/energy/database/additional-data#Short%20assessment%20of%20renewable%20energy%20sources%20(SHARES).
[13] Saini, P., Persson, U., Sánchez García, L., Ottermo, F., and Bales, C. Evaluating the Potential for Solar District Heating with Pit Thermal Energy Storage in Sweden in International Sustainable Energy Conference - Proceedings. 2024. Graz, Austria. Available at (2024-07-08): https://www.tib-op.org/ojs/index.php/isec/article/view/1214.
[14] Persson, U., Saini, P., Sánchez-García, L., Ottermo, F., and Bales, C. Data categories and selection criteria for an evaluation of the potential for solar district heating with pit thermal energy storage in Sweden in Book of Abstracts: 10th International Conference on Smart Energy Systems. 2024. 10-11 September, Aalborg, Denmark: Aalborg University and Energy Cluster Denmark. Available at (2025-03-17): https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-55640.
[15] Bales, C., Persson, U., Saini, P., Ottermo, F., and Sánchez-García, L., Final Report: Solar district heating with pit storage for Swedish conditions. 2025. Högskolan Dalarna, Borlänge. Available at (2025-04-16): https://urn.kb.se/resolve?urn=urn%3Anbn%3Ase%3Adu-50446.
[16] Østergaard, P. and Sperling, K., Towards Sustainable Energy Planning and Management. International journal of Sustainable Energy Planning and Management 1 (2014) p 1-5. http://dx.doi.org/10.5278/ijsepm.2014.1.1.
[17] Østergaard, P.A. and Maestosi, P.C., Special Issue: Tools, technologies and systems integration for the Smart and Sustainable Cities to come. International Journal of Sustainable Energy Planning and Management 24(0) (2020). https://doi.org/10.5278/ijsepm.vol24.
[18] Lund, H., Østergaard, P.A., Connolly, D., and Mathiesen, B.V., Smart energy and smart energy systems. Energy 137 (2017) p 556-565. https://doi.org/10.1016/j.energy.2017.05.123.
[19] Thellufsen, J.Z., Lund, H., Sorknæs, P., Østergaard, P.A., Chang, M., Drysdale, D., Nielsen, S., Djørup, S.R., and Sperling, K., Smart energy cities in a 100% renewable energy context. Renewable and Sustainable Energy Reviews 129 (2020) p 109922. https://doi.org/10.1016/j.rser.2020.109922.
[20] Sköldberg, H., Holm, J., and Rensfeldt, A., Värdet av säsongslager i regionala energisystem – modellberäkningar av sex typsystem (The Value of Seasonal Storage in Regional Energy Systems - Model Calculations of Six Type Systems). 2019. Rapport 2019:624. Energiforsk. Available at (2025-03-04): https://energiforsk.se/media/27170/vardet-av-sasongslager-i-regionala-energisystem-energiforskrapport-2019-624.pdf.
[21] Energimyndigheten, Solvärme i Sverige - En studie med fokus på potential, ekonomi och bidrag till energi- och klimatmål (Solar heat in Sweden - A study with focus on potential, economy, and contributions to energy and climate targets). ER 2021:32. 2021. Energimyndigheten (Swedish Energy Agency), Eskilstuna. Available at (2025-03-21): http://www.energimyndigheten.se/nyhetsarkiv/2022/ny-rapport-visar-potentialen-for-storskalig-solvarme-i-fjarrvarmenat/
[22] Trier, D., Skov, C.K., Sørensen, S.S., and Bava, F., Solar District Heating Trends and Possibilities. Characteristics of Ground-Mounted Systems for Screening of Land Use Requirements and Feasibility. Technical Report of IEA SHC Task 52, Subtask B – Methodologies, Tools and Case studies for Urban Energy concepts. 2018. PlanEnergi, Copenhagen. Available at (2025-04-15): https://iea-shc.org/Data/Sites/1/publications/SDH-Trends-and-Possibilities-IEA-SHC-Task52-PlanEnergi-20180619.pdf.
[23] HUDHC, Halmstad University District Heating and Cooling Database_version 5 (2016 update by date 2019-09-30). 2019. Halmstad University, Sweden.
[24] Swedenergy, Energy supply to cogeneration, district heat production, and district heat deliveries 2015 (SE: Tillförd energi till kraftvärme och fjärrvärmeproduktion och fjärrvärmeleveranser 2015). Downloaded dataset: Tillförd energi till kraftvärme och fjärrvärmeproduktion och fjärrvärmeleveranser 2015.xlsx. 2024. Swedenergy - Energiföretagen Sverige. Available at (2024-02-26): https://www.energiforetagen.se/statistik/fjarrvarmestatistik/tillford-energi/tillford-energi-till-fjarrvarme-och-kraftvarme/.
[25] Energimarknadsinspektionen, Tekniska uppgifter - fjärrvärme (Technical information - district heating). 2024. Energimarknadsinspektionen (Energy Market Inspectorate). Available at (2024-03-01): https://ei.se/om-oss/statistik-och-oppna-data/tekniska-uppgifter---fjarrvarme.
[26] Swedish Energy Markets Inspectorate, Delivered heat by price area, technical data. Ver: 3.00, Datum: 221129 (SE: Levererad värme per prisområde, tekniska uppgifter. Ver: 3.00, Datum: 221129). Downloaded dataset: Levererad värme per prisområde tekniska uppgifter - fjärrvärme.xlsx. 2023. Energimarknadsinspektionen (Ei). Swedish Energy Markets Inspectorate. Available at (2024-02-26): https://ei.se/om-oss/statistik-och-oppna-data/tekniska-uppgifter---fjarrvarme.
[27] Swedenergy. 2023. Personal communication with N. Burstein 2023-03-16. Shared internal dataset: District heat deliveries per location and per year 1996-2021.xlsx (SE: Fjärrvärmeleveranser per ort och per år 1996-2021.xlsx). Swedenergy - Energiföretagen Sverige.
[28] sEEnergies. sEEnergies - Quantification of Synergies between Energy Efficiency First Principle and Renewable Energy Systems. 2020. [cited 21 June]. Available at: https://www.seenergies.eu/.
[29] sEEnergies Open Data Hub, Referenced dataset: "D5.1 District Heating Areas". 2022. Europa-Universität Flensburg. sEEnergies: Quantification of synergies between Energy Efficiency first principle and renewable energy systems. Available at (2022-05-28): https://s-eenergies-open-data-euf.hub.arcgis.com/search?categories=d5.1.
[30] Fleiter, T., Manz, P., Neuwirth, M., Mildner, F., Persson, U., Kermeli, K., Crijns-Graus, W., and Rutten, C., D5.1: Excess heat potentials of industrial sites in Europe (Revised version). Documentation on excess heat potentials of industrial sites including open data file with selected potentials. 2020. sEEnergies - Quantification of synergies between Energy Efficiency first principle and renewable energy systems. Available at (2025-03-21): https://doi.org/10.5281/zenodo.4785411.
[31] HRE4. Heat Roadmap Europe Resource Center. 2020. [cited 21 March]. Heat Roadmap Europe: Low-carbon heating & cooling strategies for Europe. Available at: https://heatroadmap.eu/.
[32] PETA 4.3, The Pan-European Thermal Atlas (Peta, version 4.3). Dataset: "Heat Demand Densities 2015 (HRE4)". 2018. Heat Roadmap Europe - A low-carbon heating and cooling strategy for Europe. Available at (2018-12-10): https://heatroadmap.eu/peta4/.
[33] Persson, U., Möller, B., and Wiechers, E., Methodologies and assumptions used in the mapping. Deliverable 2.3: A final report outlining the methodology and assumptions used in the mapping. 2017. Heat Roadmap Europe 2050, A low-carbon heating and cooling strategy. Available at (2018-12-10): https://heatroadmap.eu/wp-content/uploads/2018/11/D2.3_Revised-version_180928.pdf.
[34] European Commission: Joint Research, C., Pafi, M., Ferri, S., Halkia, M., Siragusa, A., and Sabo, F. The European settlement map 2017 release – Methodology and output of the European settlement map (ESM2p5m). Publications Office, 2016. https://data.europa.eu/doi/10.2760/780799
[35] JRC, European Settlement Map (ESM). Copyright European Commission, European Settlement Map 2016. 2017. Joint Research Centre, Institute for the Protection and Security of the Citizen, Global Security and Crisis Management Unit. European Commission, Brussels. Retrieved originally 2017-07-21 from (https://land.copernicus.eu/pan-european/GHSL/european-settlement-map/EU%20GHSL%202014?tab=download). Available at (2024-03-04): https://ghsl.jrc.ec.europa.eu/datasets.php.
[36] Geonames, Features for country with iso code SE. Licensed under Creative Commons BY 4.0 (CC BY 4.0). Link to licence: https://creativecommons.org/licenses/by/4.0/. No changes made. 2023. Opendatasoft. St. Gallen, Switzerland. Available at (2023-05-23): https://download.geonames.org/export/dump/.
[37] IEA, World Energy Balances (2019 Edition). 2019. International Energy Agency, Paris.
[38] Persson, U. and Werner, S., Quantifying the Heating and Cooling Demand in Europe. Work Package 2. Background Report 4. 2015. Stratego: Multi-level actions for enhanced Heating & Cooling plans. Project No: IEE/13/650. Available at (2024-02-23): https://heatroadmap.eu/wp-content/uploads/2018/09/STRATEGO-WP2-Background-Report-4-Heat-Cold-Demands.pdf.
[39] Persson, U., Wiechers, E., Möller, B., and Werner, S., Heat Roadmap Europe: Heat distribution costs. Energy 176 (2019) p 604-622. DOI: https://doi.org/10.1016/j.energy.2019.03.189.
[40] sEEnergies Open Data Hub, Referenced dataset: "BL2015 HD100 total". 2022. Europa-Universität Flensburg. sEEnergies: Quantification of synergies between Energy Efficiency first principle and renewable energy systems. Available at (2022-05-28): https://s-eenergies-open-data-euf.hub.arcgis.com/maps/886d9e7864ca4c53a67172d523a588c0/about.
[41] Lantmäteriet, Höjddata, grid 50+ NH 2020 (tif) Elevation data, grid 50+. 2023. © Lantmäteriet. GSD Geografiska Sverigedata. Available at (2023-08-22): SLU GET (Geodata Extraction Tool) Service.
[42] Lantmäteriet, Terrain Model Download, grid 50+ NH. 2022. Product description. Document version: 1.6. Lantmäteriet (Swedish Land Survey). Available at (2024-08-12): https://www.lantmateriet.se/globalassets/geodata/geodataprodukter/hojddata/e_grid50plus_nh.pdf.
[43] SGU, Produkt: Jorddjupsmodell. 2024. Produktbeskrivning (Product description). Sveriges geologiska undersökning (SGU). Available at (2024-08-12): https://resource.sgu.se/dokument/produkter/jorddjupsmodell-beskrivning.pdf.
[44] SGU, Jorddjup_10x10m (tif). 2023. Raster dataset, Jorddjup (Soil depth). Produkt: Jorddjupsmodell. © Sveriges geologiska undersökning (SGU). Available at (2023-08-24): SLU GET (Geodata Extraction Tool) Service.
[45] SGU, Produkt: Jordarter 1:25 000 – 1:100 000. 2024. Produktbeskrivning (Product description). Sveriges geologiska undersökning (SGU). Available at (2024-08-13): https://resource.sgu.se/dokument/produkter/jordarter-25-100000-beskrivning.pdf.
[46] SGU, Jordarter_25_100k_jg2. 2023. Vector dataset, Jordart, grundlager JG2 (Soil types, ground layer JG2). Produkt: Jordarter 1:25 000 - 1 000 000. © Sveriges geologiska undersökning (SGU) Available at (2023-09-27): SLU GET (Geodata Extraction Tool) Service.
[47] European Environment Agency, CORINE Land Cover 2018 (vector/raster 100 m), Europe, 6-yearly - version 2020_20u1, May 2020. 2020. © European Union, Copernicus Land Monitoring Service 2024, European Environment Agency (EEA). Available at (2024-05-29): https://land.copernicus.eu/en/products/corine-land-cover/clc2018#general_info.
[48] Copernicus, Corine Land Cover. 2024. Copernicus: Europe's eyes on Earth. Available at (2024-08-13): https://land.copernicus.eu/pan-european/corine-land-cover.
[49] ESRI. GIS Software for Mapping and Spatial Analytics. 2025. [cited 2025-04-08]. Available at: http://www.esri.com/.