1 million consumers benefit from smart energy solution in Greater Copenhagen. 95% of all heat is generated by CHP plants fuelled by waste and biomass. Only 5% from boilers. The system is now in a transition towards smart integration of wind energy via large heat pumps and electric boilers, and CHP plants with storages, which can respond on electricity prices .
The 180 km hot water transmission system is owned by CTR, VEKS and Vestforbrænding and supplies heat to 21 distribution networks in 21 local authorities. Besides that, HOFOR operates a steam system which covered 20% of the system. This steam system is currently being replaced by hot water district heating, and the conversion is expected to be completed 2022.
CTR is owned by Copenhagen, Frederiksberg, Tårnby, Gladsaxe and Gentofte municipalities.
VEKS is owned by Albertslund, Brøndby, Glostrup, Greve, Hvidovre, Høje-Taastrup, Ishøj, Køge, Roskilde, Rødovre, Solrød and Vallensbæk municipalities.
The waste management company Vestforbrænding supplies heat in Herlev, Ballerup, Gladsaxe, Furesø and Lyngby-Taarbæk municipalities. Moreover Vestforbrænding is interconnected with the heat transmission system, which interconnects Hillerød and Farum-Værløse in Furesø Municipality.
All distribution companies are owned either by the municipalities or the consumers, with the aim to maximize the technical, institutional and financial efficiency to reduce the heat prices. (profit to consumers which are the real owners in accordance with the Heat Supply Act). All investments has since 1979 been financed 100% by the most competitive loans on the world market.
The total heated floor area which is supplied from the interconnected system is 75 mio. m2 according to the updated building register and the annual heat sale is 30,000 TJ. The average emission is 65 kgCO2/MWh.
The 21 local authorities are responsible for the least cost heat supply planning of the system in accordance with the Heat Supply Act.
In the two largest municipalities Copenhagen and Frederiksberg, 99% of all buildings are supplied with district heating, which improves the efficiency and is the most important instrument to be independant of fossil fuels.
Optimized to meet climate objectives
The system is further developed and optimized to meet climate objectives by connecting districts with existing and new buildings to the grid and by shifting to more renewable energy. The utilities optimizes the heat production hour by hour from:
- 2 large biomass fuelled CHP plants: Amagerværket and Avedøreværket
- 1 biomass fuelled industrial CHP plant in Køge, owned by VEKS
- 3 waste-to-energy CHP plants: ARC, Vestforbrænding and ARGO
- Sludge incinerators at two waste water treatment plants owned by Biofoss
- 30 MW gas fuelled combined Cycle CHP plant at DTU owned by DC, mainly operating as peak capacity in the power system
- 5 MW waste heat from the pectine factory CPKelco
- several heat pumps for cogeneration of heating and cooling
- Electric boilers
- 50 gas/oil fuelled peak load and spare capacity boilers
There are in total 3 x 24,000 m3 heat storage tanks connected directly to the 25 bar heat transmission system with pressures ections. These tanks are important for the optimization of the operation.
The market share of district cooling is increasing significantly in many districts benefitting from economy of scale and symbiosis with district heating, not least co-generation of district heating and cooling.
Additional heat storage capacity is in the pipe line, including ATES systems and a heat storage pit.
The Greater Copanhagen district heating system is the first of 8 selected case studies on efficient DH&C in an EU JRC report, january 2017, see attached file.
Ramboll has from 1970 provided a wide range of consultancy services to most of the energy companies and authorities in the region, e.g.:
- Planning of heat supply for most of the municipalities.
- Planning, design, and implementation of the heat transmission networks for CTR and Vestforbrænding. This is more than 10 distribution networks incl. Frederiksberg Forsyning and the three waste to energy plants, Vestforbrænding, ARC and KARA/NOVEREN.
- Planning and design of Avedøreværket and Amargerværket including 3 x 24,000 m3 heat storage tanks.
- Rehabilitation of old district heating networks for several of the district heating companies.
- Analysing stationary and pressure transient hydraulic in the whole transmission system.
- Planning and design of district cooling systems
The system is probably the most popular show case in the Danish Energy sector and attracts high level study tour groups from all over the world.
You are always welcome to visit Ramboll and learn about the legal, institutional, financial and technial performance.
Ramboll employs more than 16,500 experts globally and has especially strong representation in the Nordics, UK, North America, Continental Europe, Middle East and Asia-Pacific. With 300 offices in 35 countries, Ramboll combines local experience with a global knowledgebase constantly striving to achieve inspiring and exacting solutions that make a genuine difference to our clients, the end-users, and society at large. Ramboll works across the following markets: Buildings, Transport, Planning & Urban Design, Water, Environment & Health, Energy and Management Consulting.
Contributors to this solution
Amager Resource Centre
Every day of the year we relieve the inhabitants and companies of the five capital municipalities Dragør, Frederiksberg, Hvidovre, Copenhagen and Tårnby of their waste and supply heat and electricity to their households in return. In total this amounts to 435,000 tons of waste which is converted into electricity and
Danish Board of District Heating (DBDH is a private organisation representing the leading actors of the Danish district energy sector, including: Heat and combined heat and power production companies and waste incineration companies Heat transmission and distribution companies Private consulting companies, R&D institutions and training institutes Manufacturing companies
Copenhagen Capacity is the official inward investment agency of Greater Copenhagen. Our mission is to promote the region internationally with the aim of attracting and maintaining foreign companies. The services include business information, access to an extensive network of expert consultants, lawyers, public authorities and businesses.
We act as
Frederiksberg Forsyning is the local utility company in Frederiksberg. The core of our work is to ensure that our cusomers recieve secure and safe access to climate-friendly water and energy of high quality. We do this through supply of domestic gas, tap water, district cooling and -heating, production of wind
The City of Frederiksberg is a modern, metropolitan local authority with the characteristics of a major city. First and foremost, however, is a residential area with all service provisions included. The many parks and leisure facilities in the city provide the Capital with a green oasis characterised by a special