The most efficient heating plant in the whole world



More than 200,000 people in Denmark get their heat and power from the 400 MW North Jutland district heating plant run by Elsam.

Elsam A/S focuses strongly on optimizing energy
consumption in all sections of the plant.

Two water treatment systems ensure that the water circulated in the district heating mains is of consistently high quality. Grundfos CRN pumps are key players in the systems due to their reliability and efficiency.

The Situation
The North Jutland plant had an efficiency problem; the local customers paid some of the highest prices in the world for their heating. The pumps at the plant were corroded and unreliable.

The Grundfos Solution
Two separate water treatment systems were installed: an off-line purification system and a reverse osmosis system. The combination mechanically filters suspended matter and demineralises the circulating water.

The Outcome
The water quality is so high that corrosion is no longer a problem. The North Jutland plant is now the most efficient in the world; the folks in north Denmark have a lot more money in their pockets!

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Reliability - Ease of installation - Fine service - Efficiency


The North Jutland, Denmark


Elsam A/S


  • Reliability
  • Ease of installation
  • Fine service
  • Efficiency




  • Reverse osmosis system
  • One high pressure feed water pump, CRN 45-9
  • One circulation pump for CIP, CRN32-2
  • One distribution pump, CRN32-2
  • Off-line purification system
  • One feed pump, LP 100-200/183
  • One recirculation pump, CRN 45-1
  • Two regeneration pumps, CRN 8-30/2 and CRN 16-30/2


Elsam A/S

Says Karsten Thomsen, Power Plant Chemist, North Jutland plant: "Our experience with Grundfos pumps is very fine. High reliability is a must, and service, when required, must be quick and trouble-free. So we thought it natural to choose Grundfos pumps again for our new water treatment systems." Says Ove Mosgaard, who set up the water treatment systems: "At Elsam, they know what they want, so my job was to guarantee the performance and reliability of the pumps in the systems. With Grundfos pumps I am ready to do so, and when high quality is obtained along with a competitive price, I go for it"

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If you need a similar solution, please contact us for further information.


If you need a similar solution, please contact us for further information.