[{"data":1,"prerenderedAt":210},["ShallowReactive",2],{"customer-story:\u002Fen\u002Fcustomer-stories\u002Fstrom-sa":3},{"id":4,"title":5,"body":6,"description":136,"extension":152,"footerCta":153,"hero":160,"locale":168,"meta":169,"navigation":170,"path":171,"seo":172,"sidebar":176,"slug":197,"stats":198,"stem":208,"__hash__":209},"customer_stories\u002Fen\u002Fcustomer-stories\u002Fstrom-sa.md","Strom Sa",{"type":7,"value":8,"toc":135},"minimark",[9,14,25,29,32,35,38,42,45,50,53,56,59,63,66,70,73,76,79,83,87,90,94,97,100,106,113,117,122,131],[10,11,13],"h2",{"id":12},"company-details","Company details",[15,16,17,24],"p",{},[18,19,23],"a",{"href":20,"rel":21},"https:\u002F\u002Fsites.google.com\u002Fe-stroem.com\u002Fhome\u002Fhome",[22],"nofollow","STRÖM SA"," is an energy\nengineering office that brings and deploys optimized energy systems using\ndifferent sort of renewable heating and cooling solutions. They offer smart\nhomes and eco energy solutions services for personal houses and industrial\nenvironments.",[10,26,28],{"id":27},"the-challenge","The challenge",[15,30,31],{},"The village of Grandvaux (CH) is a UNESCO World Heritage site. This historic\nvillage, nestled on the steep slopes above Lake Léman, overlooks surrounding\nvineyards. Decarbonizing such a site poses unique challenges due to heritage\npreservation requirements, limited thermal resources, and the low energy\nefficiency of historic buildings.",[15,33,34],{},"The village comprises 67 buildings, mainly built between the 15th and 19th\ncenturies, with a total heat demand of 2.3 GWh\u002Fyear.",[15,36,37],{},"To tackle this challenging case, our client Ström Energy, with support from\nthe Swiss Federal Office of Energy, designed a novel 5th generation district\nheating and cooling system using shallow geothermal wells.",[10,39,41],{"id":40},"the-solution","The solution",[15,43,44],{},"To address these challenges, Planeto's Software Tessa helped Ström SA to\ndesign the new DHC network for this historic 67-building village.",[46,47,49],"h3",{"id":48},"_1-use-of-a-single-tube-loop","1. Use of a single-tube loop",[15,51,52],{},"The single-pipe loop concept reduces construction costs, network pressure\nlosses, operating costs, the number of probes and energy recovery.",[15,54,55],{},"A 5th-generation DHC network saves space and energy by using a low-temperature\nthermal vector (between 3 and 15°C) with uninsulated single-tube pipes, to\nwhich buildings are fed in series via a heat pump (HP) — and not via a heat\nexchanger, as is the case with 3rd- and 4th-generation DHC.",[15,57,58],{},"Each building produces its own hot water and heat, as well as cooling. An\nimportant characteristic from 5th-generation networks as cooling demands are\ngoing to increase in the next years (by the year 2069 demands could increase\nby +4'840%).",[46,60,62],{"id":61},"_2-re-using-heat-loss","2. Re-using heat loss",[15,64,65],{},"5th-generation DHC networks make it possible to recycle consumption waste\nthat can be used directly to recharge geothermal probes.",[46,67,69],{"id":68},"_3-reduction-of-the-total-number-of-boreholes","3. Reduction of the total number of boreholes",[15,71,72],{},"In order to optimize the borehole configuration and minimize the long-term\nthermal resistance of the soil, Planeto used an optimization strategy proving\nthat too dense a group leads to a reduction in energy performance due to\nsignificant thermal interference between probes.",[15,74,75],{},"The layout of the 64 boreholes presented is optimally distributed, maximizing\nthe potential for efficient extraction of heat from the boreholes.",[15,77,78],{},"This is mainly possible due to the spacing between boreholes along the roads,\nlimiting the interaction between probes and allowing the valorization of\nadditional regenerative sources due to the network's low temperature. These\ndecentralized energy recovery systems are installed to regenerate the network\nduring the warm period of the year, allowing energy storage in the boreholes.",[10,80,82],{"id":81},"the-results","The results",[46,84,86],{"id":85},"_100-compliance-with-regulations-on-geothermal-heat-extraction","100% Compliance with regulations on geothermal heat extraction",[15,88,89],{},"Ström SA selected Planeto's solution for its unique ability to simulate low\ntemperature networks simultaneously with geothermal probe fields over multiple\ndecades. This capability was essential to validate the design's compliance\nwith regulations on geothermal heat extraction.",[46,91,93],{"id":92},"the-villages-heritage-was-preserved","The village's heritage was preserved",[15,95,96],{},"Shaped by man since the 12th century, Lavaux is famous for its terraced\nvineyards and vines planted as far back as Roman times.",[15,98,99],{},"The many laws governing land-use planning at federal, cantonal and municipal\nlevel are exceptionally protective. This landscape is even enshrined in the\nVaud Constitution. These strong measures have led to UNESCO recognizing Lavaux\nas a World Heritage Site.",[15,101,102],{},[103,104,105],"strong",{},"It is in this context that Planeto delivered further value through its\noptimisation algorithms which could reduce the geothermal field size by\nmaking use of thermal regeneration and respected the village's laws and\nheritage.",[15,107,108],{},[18,109,112],{"href":110,"rel":111},"https:\u002F\u002Fwww.aramis.admin.ch\u002FDokument.aspx?DocumentID=71819",[22],"→ Access the official report here.",[46,114,116],{"id":115},"infrawatt-innovation-award-winner-2026","InfraWatt Innovation award winner — 2026",[15,118,119],{},[103,120,121],{},"At the 2026 District Heating Forum, InfraWatt presented the 2026 Innovation\nAward – Thermal Networks, recognizing this project as a decisive contribution\nto the decarbonization of heat and cooling supply in Switzerland.",[15,123,124],{},[18,125,128],{"href":126,"rel":127},"https:\u002F\u002Finfrawatt.ch\u002Ffr\u002F8197\u002F",[22],[103,129,130],{},"→ Find out more here ←",[132,133],"footer-cta-banner",{"heading":134},"Create a groundbreaking sustainable solution like Ström",{"title":136,"searchDepth":137,"depth":137,"links":138},"",2,[139,140,141,147],{"id":12,"depth":137,"text":13},{"id":27,"depth":137,"text":28},{"id":40,"depth":137,"text":41,"children":142},[143,145,146],{"id":48,"depth":144,"text":49},3,{"id":61,"depth":144,"text":62},{"id":68,"depth":144,"text":69},{"id":81,"depth":137,"text":82,"children":148},[149,150,151],{"id":85,"depth":144,"text":86},{"id":92,"depth":144,"text":93},{"id":115,"depth":144,"text":116},"md",{"heading":154,"primary":155,"secondary":158},"Ready to plan your next decarbonisation project?",{"label":156,"to":157},"Get a demo","\u002Fproduct-demo",{"label":159,"to":157},"Contact us",{"heading":161,"subhead":162,"image":163},"How Planeto helped Ström SA bring geothermal energy to a historic UNESCO site","Using Planeto's software, Ström SA developed a groundbreaking sustainable solution that could revolutionize energy systems for thousands of historic villages worldwide.",{"src":164,"alt":165,"width":166,"height":167},"\u002Fimg\u002Fcustomer-stories\u002Fstrom-sa-detail\u002Fstrom-hero.jpg","Grandvaux kpis",601,515,"en",{},true,"\u002Fen\u002Fcustomer-stories\u002Fstrom-sa",{"title":173,"description":174,"ogImage":175},"5th Generation Shallow Geothermal Heating and Cooling - Planeto","Planeto helped Ström bring 5th generation heating and cooling energy with shallow geothermal energy to a UNESCO world site in Grandvaux.","\u002Fimg\u002Fog\u002Fcustomer-stories\u002Fstrom-sa.jpg",{"logo":177,"items":178},"\u002Fimg\u002Flogos\u002Fstrom-logo.png",[179,182,185,188,191,194],{"label":180,"value":181},"Company","Ström SA",{"label":183,"value":184},"Industry","Energy engineering office",{"label":186,"value":187},"Project","67 buildings",{"label":189,"value":190},"Budget","7 million CHF project",{"label":192,"value":193},"Location","Grandvaux, VD, Switzerland",{"label":195,"value":196},"Award Winner","Infrawatt innovation award","strom-sa",[199,202,205],{"value":200,"label":201},"65%","Less energy for pumping",{"value":203,"label":204},"1 110m","Single-tube thermal loop",{"value":206,"label":207},"50%","Less geothermal boreholes","en\u002Fcustomer-stories\u002Fstrom-sa","5oTIKLPe65aTCaCfLhTVx42_t3fZVqKGSYPOHT0Qsuk",1782290865502]