Based on more frequent meter data, Næstved District Heating has created clear results. ”We have lowered the return temperature by 5 degrees, and, for large periods of the year, we have lowered the forward temperature by up to 10 degrees. Already now we have therefore reduced our pipeline losses by 8%, and we expect to reach 10%. Additionally, many of our customers have saved up to 10% on their heating bill,” says Jens Andersen.
The financial savings from operational optimisation have also had a huge impact on the utility. ”Today, none of our customers get more than 75 degrees, so we use a lot fewer cubic metres of water. Also, 10% less pipeline losses alone represents an annual cost of DKK 1 million without even touching the assets underground. This is all generated automatically through temperature reduction. And we are nowhere near done.” In addition to their 10 temperature metering points in the distribution network, they are currently integrating 50 priority meters delivering data down to every 96 seconds. In the SRO system, they can ensure even better management of temperature and flow in the distribution network and increase energy efficiency.
Additionally, the utility expects to save a lump sum of DKK 1-1,5 million as a result of energy savings. ”We haven’t made the final calculations, but based our results so far, the business case is even better than we had expected.”