P17
By establishing low-temperature district heating and energy- optimising both homes and networks, Albertslund is making a major contribution towards attaining the objective of 100 % CO2-neutrality. Energy consumption is being reduced, and the city is preparing for the energy system of the future with more fluctuating electricity production and an energy supply in which the biomass in the big central power plants is gradually phased out and replaced with large electric-powered heat pumps. Work on low-temperature district heating already underway The jump from today’s district heating delivery to low- temperature district heating is actually not that big. District heating customers with older systems are now guaranteed a delivery temperature of 70° C. This temperature is reduced to 50-55 ° C with low-temperature delivery. All new and renovated installations should already meet this requirement under the 2014 technical regulations from Albertslund Forsyning. Albertslund has already started to convert to low-temperature district heating. It is expected that the residential and industrial areas and public buildings could be converted by 2026 with the right approach. Analyses show that most properties are already set up for low-temperature district heating, but some will require either added insulation or better use of the energy in the central heating plant – such as larger radiators or new flat stations. Some improvements will be made as part of the general ongoing renovation of the buildings. The efforts in the residential and industrial areas will also be reinforced with a targeted area-by-area approach, whereby the ‘Albertslund concept’ together with the BedreBolig scheme and other similar schemes, funds and partnerships will support the goal of switching to low-temperature district heating by 2026. They should also support the transformation into a modern, sustainable and intelligent city – in close collaboration with its present and future inhabitants. How the strategy will become a reality The strategy will be realised by working on a large number of optimisation measures: Consulting and grants for energy-saving measures via the ‘BedreBolig’ scheme, for example, and special initiatives aimed at business customers and public properties – area by area, according to a targeted plan. The plan will focus constantly on how ‘low-temperature-ready’ the individual homes and districts are. No residents or businesses will find that they cannot keep warm in a cold winter, even after 2026. Albertslund Forsyning will be standing by throughout the process with energy grants, advice and assistance to guide users toward effective, economically balanced solutions for the individual building types and areas. For those buildings that cannot be insulated against the temperature drop for various reasons, a switch to one or more slightly larger radiators will easily be able to maintain the heat input.
Over the next ten years, these initiatives in the area of district heating are intended to back up the efforts to create a modern, convenient, sustainable and smart suburb. They should also make it possible for Albertslund to go on meeting the statutory energy-saving requirements, and to save at least a further 10% of its heat consumption over the next ten years. This could save 1.5 – 2 million EUR a year in spending on district heating. Albertslund sees great value in collaboration and innovation with other public and private sector players in the energy market, at the local and the national level. To remain in the forefront of innovation, the city has also made itself available as a laboratory for the development of ‘Smart City’ elements. A holistic approach to electricity production and district heating and a modern housing stock will support the long-term objectives of the city, the country and Europe as a whole in the energy field. Therefore, there are many good reasons to set a goal of low- temperature heat supplies in Albertslund in 2025: • To save 1.5 – 2 million EUR a year in spending on heat – an average of approx. 125 EUR per household in Albertslund • To improve our district heating network to receive locally- produced heat, such as surplus heat from production and wind-turbine power via heat pumps • To support the goals in the municipality’s ‘Vision and Strategy’ • To support the renewal and renovation of the city • To support Albertslund’s ambition to be a CO2-neutral municipality with regard to heating and electricity supplies by 2025 • To support the legal requirement to reduce energy consumption by approx. 3 % a year • To support national and regional goals in the heating and energy field
Albertslund Forsyning visiting a heat customer where Albertslund Forsyning takes over operation and maintenance of the property’s heating unit.
CO2-neutral district heating VEKS supplies 100 % of the district heating to Albertslund, and this heat is now 51 % CO2-neutral. In the ‘Heat Plan for Greater Copenhagen’, VEKS, CTR (the Metropolitan Copenhagen Heating Transmission Company) and HOFOR (Greater Copenhagen Utility) describe how the district heating system can be made CO2-neutral by 2025, mainly by converting the big CHP plants from fossil fuels to biomass and make the waste heat CO2-neutral by removing plastic.
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