DISTRICT ENERGY VISIT TO PARIS
The next visit went to CPCU which delivers 4,500 MWh of heat per year in a 450 km network in Paris. Almost 50% of the energy delivered comes from local renewables or recovered energy. In the evening the Danish Ambassador hosted a successful VIP Dinner where the Danish delegation met with potential French customers and political opinion leaders. The second day comprised important visits to the two largest developers and owners of DH and DC plants in France – Cofely, GDF Suez and Dalkia. Together they own and operate more than 2/3 of the installed district energy in France. The last visit of the tour went to the Dalkia site Geoval, a new geothermal installation from 2012. It has been a € 15 million investment and they pump up 72 degrees C hot water from a depth of 2000 m to supply heat to 5,000 residential houses. They deliver 51,000 MWh of heat of which 85 % comes from geothermal energy and 15 % from gas. The geothermal water is quite aggressive and therefore it is necessary to change the pumps every 5th year. They have a COP of 25 and the customers pay a fixed price for the next 25 year corresponding to approximately 70 % of the cost of gas.
In September a delegation of DBDH member companies visited Paris to get inspiration and learn about district heating, district cooling and geothermal energy in France - and to build up close relations to customers. The visit was held in close cooperation with the Danish Embassy in Paris and supported by the Trade Council of Denmark. Of the 18 participants were following DBDH member companies: Danfoss, Isoplus, Cowi, 7-Technologies (Schneider Electric), Kamstrup, Broen, Frederiksberg Forsyning, Brunata and SPX. The tour to Paris was a follow-up on a DBDH seminar held in 2010, which made it clear that an expansion of district energy is taking place in France. The expansion has not been taking place at the predicted pace, but there is a continuous growth in the sector. The first visit was to Climespace, a part of the COFELY, GDF Suez Group, which has the largest DC scheme in Europe. In total the DC network of Climespace in Paris has a length of 70 km pipes, sells 400 GWh/year, and cools approximately 5 million m2. To do this they have 7 plants and 3 storage facilities. Their primary source of cooling today comes from the river Seine and they can reach an energy efficiency ratio of 3.5 – 4.3 compared to 2.0 of stand-alone plants. On top of this there are considerable gains for the environment, esthetic and architectural designs.
The two days ended with a meeting with IEA at the Danish Embassy. Here know-how was exchanged and IEA gave a presentation of their “Energy Technology Perspectives 2012”. Two of the conclusions stated that “a systems approach will be needed to achieve higher energy service efficiencies and a low- carbon heat supply” and “district heating and cooling networks are fundamental for decarbonisation”.
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