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Street in a Day

Future-proof district energy networks in split second
Street in a Day
Street in a Day
Street in a Day

District Energy plays a vital part in moving towards a sustainable future, and clear the way for smart cities with efficient, sustainable and affordable energy systems. The implementation or renovation of such solutions, however, are often considered a major stumbling block because of the time, cost, disturbance and operational risk often associated with their installation. But what if we can bury that block? What if we can secure affordable, and future-proof comfort for the residents of an entire street in just a single day?

District heating 3.0

The best way to prepare for tomorrow? Pre-fabricate today! We developed the innovative concept of a fully pre-insulated piping network on coil, including readily housing connections. The first pilot project in the smart city of Hengelo set a record that would quickly become the standard: the connection an entire street, including trenching, laying, welding and closing – usually a matter of motnhs – all in just a single day. That means residents could return to their houses before sunset.

Plug and Play

Part of the trick lies in minimizing the amount of connections needed on site. As 60-70% of the connections can be made in the factory, installation time and cost are drastically reduced, allowing control of tight schedules. The other part of the trick lies in the flexibility and homogeneity of Flexalen, further boosting the ease and speed of installation.


On top of that, our revolutionary Flexalink connection technology ensures headache-free performance as connections, usually the most risky parts of a network, are made on a 100% clean and controlled factory floor, readily tested for performance. That means risk, maintenance and overhead costs are also kept to a minimum.

Support in every step of the way

We ensure optimal results by assisting as early as in the design phase. Our best network engineers can calculate optimal routing and dimensioning, and help to find the optimum solution for each site. Check out our case studies to 

  • Securing smooth implementation with the help of our on-site specialists
  • Speed of installation = minimal disturbance for residents
  • Optimized site management (trenches only open for short time)
  • Meeting critical project dates (avoiding penalties)
  • System guarantee from Thermaflex
  • Economic total solution 


  Letter of Recommendation by Freund GmbH (German) PDF 358 KB Preview Download Mail

This letter of recommendation was issued by Freund GmbH (austrian installation company) for the Street in a day project in Wörgl.

  Pressure drop PB-pipes PDF 44 KB Preview Download Mail

Pressure drop PB-pipes

Brochures Catalogues

  Flexalen Product Guide PDF 4623 KB Preview Download Mail

The Flexalen Product Guide offers all system, application & technical specifications for all Flexalen product ranges.

  Successful in the past - prepared for the future (PBPSA) PDF 1619 KB Preview Download Mail

This brochure is giving an introduction to Polybutene including a review of the performance of Polybutene pressure piping systems in meeting the needs of sustainable building regulations.

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