Customer stories from real district energy projects
Engineering offices, energy planners and utilities use TESSA to design district heating and cooling networks that get built. Explore what they planned, how they did it, and the numbers they reached.
Every story starts with a real network
From a 67-building heritage village to a 349-building multi-energy district, these projects were planned end to end in TESSA — demand modelling, network layout, hydraulic simulation and business case.
584 tonsof CO₂-eq saved per year
Ström SA: 5ᵗʰ generation geothermal heating and cooling on a UNESCO site
Ström SA designed a 1,110 m single-tube thermal loop for 67 heritage buildings in Grandvaux, cutting pumping energy by 65% and halving the number of geothermal boreholes.
Grandvaux, Switzerland
91%CO₂ emission reduction
Geoimpact: a strategic energy concept for an entire municipality
A territorial energy plan covering Haute-Sorne's 184 buildings and 103 GWh of annual demand, reaching a 91% CO₂ reduction across five optimised network clusters.
Haute-Sorne, Switzerland
349buildings connected
Sympheny: automated optimisation of a multi-energy district
Solar thermal, wood biomass and heat pumps combined into a single automated optimisation pipeline for a meshed network with multiple heat injection points in Schaffhausen.
Schaffhausen, Switzerland
Why choose TESSA
All-in-one solution for thermal energy efficiency planning: compare scenarios, integrate renewable sources, generate pipe sizes in a few clicks.
Flexible scenario analysis
Quickly build different scenarios for your network, adapting the project to different energy sources and needs for better decision making.
Leverage local energy sources
Respond directly to your customer needs, integrating local excess heat and renewable energy sources. Win more public tenders by being more customer-oriented.
Maximise productivity
Build a feasibility study, compare multiple scenarios and create a report in less than two hours. Use the same tool from feasibility through detailed design — first idea to precise pipe sizing in under two hours.
We needed a solution that could support our design decisions and optimize projects from the ground up. We're finally able to do just that — saving time, improving accuracy, and ensuring we make the best possible impact with each project.
Loic QuiquerezExpert Advisor in Geothermal Energy and District Heating & CoolingSIGI can calculate different variants of district heating and cooling networks 5 times as fast and write the corresponding reports. This helps my customers make well-founded decisions without having to repeatedly place new orders for variants.
Nikos KarathanasisEngineering Managing DirectorEnersitum Engineering GmbH
