{"id":23837,"date":"2025-12-09T11:41:51","date_gmt":"2025-12-09T09:41:51","guid":{"rendered":"https:\/\/ehpa.org\/?post_type=heat-pump-storie&#038;p=23837"},"modified":"2025-12-09T12:08:27","modified_gmt":"2025-12-09T10:08:27","slug":"8c-geothermal-energy-warms-15-danish-homes","status":"publish","type":"heat-pump-storie","link":"https:\/\/ehpa.org\/heat-pump-stories\/8c-geothermal-energy-warms-15-danish-homes\/","title":{"rendered":"Geothermal 8\u00b0C energy warms 15 Danish homes"},"content":{"rendered":"<p>A group of homes in Silkeborg, Denmark get their renewable heat through a thermal network or &#8216;thermonet&#8217;.<\/p>\n<p>Six shallow boreholes, 120 metres deep, supply geothermal energy to the 15 houses. This energy is at an average of 8\u00b0C. They then supply individual geothermal Thermia heat pumps, which deliver the heat to the houses.<\/p>\n<p>The homeowners pay the same heating tariff as conventional district heating customers.<\/p>\n<p>The geothermal boreholes,\u00a0thermonet, and heat pumps are owned by district heating company Silkeborg Forsyning.<\/p>\n<p>The aim of the project was to provide residents with affordable collective heat supply comparable to conventional district heating, which is typically not economically viable in small towns.<\/p>\n<p>The solution reduces the need for relatively expensive vertical boreholes \u2013 rather than one borehole per house, with a total depth of<em>\u00a0<\/em>1,345 metres, fewer boreholes are needed with a total depth of 720 metres &#8211; by enabling them to be shared between houses via the thermal network.<\/p>\n<p><a href=\"https:\/\/thermonet.eu\/projects\/district-heating-via-thermonet-silkeborg-denmark\/\">More information<\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-23839\" src=\"https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-300x298.png\" alt=\"\" width=\"300\" height=\"298\" srcset=\"https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-300x298.png 300w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-1024x1017.png 1024w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-150x150.png 150w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-768x763.png 768w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-600x596.png 600w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1-100x100.png 100w, https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_borehole-meters-1536x1525-1.png 1536w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A group of homes in Silkeborg, Denmark get their renewable heat through a thermal network or &#8216;thermonet&#8217;. Six shallow boreholes, 120 metres deep, supply geothermal energy to the 15 houses. This energy is at an average of 8\u00b0C. They then supply individual geothermal Thermia heat pumps, which deliver the heat to the houses. The homeowners [&hellip;]<\/p>\n","protected":false},"featured_media":23838,"template":"","class_list":["post-23837","heat-pump-storie","type-heat-pump-storie","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Geothermal 8\u00b0C energy warms 15 Danish homes - European Heat Pump Association<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ehpa.org\/heat-pump-stories\/8c-geothermal-energy-warms-15-danish-homes\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Geothermal 8\u00b0C energy warms 15 Danish homes - European Heat Pump Association\" \/>\n<meta property=\"og:description\" content=\"A group of homes in Silkeborg, Denmark get their renewable heat through a thermal network or &#8216;thermonet&#8217;. Six shallow boreholes, 120 metres deep, supply geothermal energy to the 15 houses. This energy is at an average of 8\u00b0C. They then supply individual geothermal Thermia heat pumps, which deliver the heat to the houses. The homeowners [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ehpa.org\/heat-pump-stories\/8c-geothermal-energy-warms-15-danish-homes\/\" \/>\n<meta property=\"og:site_name\" content=\"European Heat Pump Association\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-09T10:08:27+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ehpa.org\/wp-content\/uploads\/2025\/12\/Story-1_20170322_143426-1536x864-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1536\" \/>\n\t<meta property=\"og:image:height\" content=\"864\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@helloheatpumps\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ehpa.org\\\/heat-pump-stories\\\/8c-geothermal-energy-warms-15-danish-homes\\\/\",\"url\":\"https:\\\/\\\/ehpa.org\\\/heat-pump-stories\\\/8c-geothermal-energy-warms-15-danish-homes\\\/\",\"name\":\"Geothermal 8\u00b0C energy warms 15 Danish homes - 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