Energy
Energy should be used efficiently, and that starts with the principles of the . Energy demand should be reduced in the first instance and, secondly, renewable energy sources should be used. To reduce energy needs and meet the energy requirements of Stockholm Royal Seaport, buildings must have a well-insulated climate shell and energy-efficient installations. This has resulted in technological development, improved insulation characteristics, more efficient control systems, and increased use of wastewater heat exchangers.
2023 Highlight:
Key figures:
- Average measured energy consumption is 72 kWh/m2 for households and 56.3 kWh/m2 for commercial spaces.
- Energy consumption in the historic Gasverket buildings more than halved compared to original estimates.
- In 2023, 916 MWh of solar energy was produced.
Energy-efficient buildings
To date, energy consumption in Stockholm Royal Seaport has been capped at 55 kWh/m2 Atemp (heated area), with electric heating weighted by a factor of 2. This requirement now applies to all City of Stockholm land allocations. Average measured energy usage is 72 kWh/m2 for residential buildings and 56.3 kWh/m2 for newly constructed commercial spaces. The requirement is toughened to 50 kWh/m2 Atemp net energy in upcoming land allocations. The majority, (83 per cent), of buildings in Stockholm Royal Seaport are connected to the district heating system. In the existing buildings of cultural and historic interest in Gasverket, energy use has more than halved compared to original estimates.
Careful monitoring of buildings’ energy performance has revealed potential for further efficiency improvements. Active and transparent dialogue formed the basis for a crucial platform for building and exchanging knowledge. This knowledge has been applied in upcoming development phases in Stockholm Royal Seaport and other City of Stockholm projects. The key lessons are that projected values often differ from actual results due to inadequate quality control during construction processes and flawed routines in handovers between different stages of projects.
Over the past decade, the focus has been on creating energy-efficient buildings. A land allocation competition was held to test the concept of plus-energy buildings, which Stockholmshem won. Experiences from monitoring and the plus-energy competition have resulted in energy system optimisation being managed at district level. A study on the energy system for Loudden was conducted within the framework of the Cities for Positive Energy Districts (Cities4PEDs) innovation project, funded by the Swedish Energy Agency and JPI Europe. A planning guide describing tools and methods for investigating positive energy districts has been developed.
Related links:
Stockholm Royal Seaport: 10 years with energy requirements (Swedish only)
Energy-efficient facilities
LED lamps fitted with motion detection sensors are used to illuminate public spaces and certain pedestrian and cycle paths. The lighting automatically adjusts brightness levels: it reduces when paths are unoccupied and increases as someone approaches. This technology has halved costs and energy consumption. In 2023, total energy consumption for lighting in Stockholm Royal Seaport was 174 MWh.
In 2023, the target for energy use in the vacuum waste collection system was achieved in terms of handling and plastic packaging. The issue with leaking valves in the system was addressed, and energy use was significantly down on the previous year. Total energy consumption for the vacuum waste collection system in 2023 was 76 MWh.
The and centres use 144 and 249 MWh respectively, primarily for stone crushing, electric vehicles, and lighting. Of this, 271 MWh comes from solar power generated on the roofs of the two facilities.
Related links:
Achievements for 3. Energy
3.3 Fossil-fuel free energy and transport system
- On average, Norra 2 is 67 kWh/m2 (66 kWh/m2 according to Swedish building code regulations BBR19 and 20) On average, Brofästet is 65 kWh/m2 (54,5 kWh/m2 according to BBR23 and 24)
- During 2023, 644 MWh of solar energy was produced on the roofs of completed phases. Additionally, the generated 235 MWh of solar electricity, and the produced 37 MWh.
- In 2023 residents survey, 29% of households have agreements on eco-labeled energy.
- 33 car parking spaces in the streets have electrical charging (carpooling) and a fast charging station. Additionally, 16% of car parking spaces on development sites are equipped with electrical charging.
- There are currently two filling stations for 100 in Stockholm Royal Seaport.
- 68% of the fuel used for machinery and vehicles in development sites during 2022 has been renewable. From 2024, there will be a requirement for 100% renewable fuels in construction machinery and transport.