The purpose is to reduce energy use – and thus the cost – in the district’s properties through a number of measures such as energy efficiency, investments in renewable energy and the sharing of energy between the properties in so-called microgrids.
Local goals / schedule
- all housing associations in Hammarby Sjöstad will be climate neutral when it comes to energy use.
Energi Hemma (Energy at Home) includes the following activities / projects:
Energy mapping of properties and teaching energy efficiency to the board members of the housing associations. This also includes that the board appoints an energy manager who receives further know-how through regular energy meetings.
- Energy meetings
Arrange meetings where energy managers and boards from housing associations participate. At the meetings, experiences are exchanged and new innovations are presented. “If our neighbor saves half a million annually on the installation of an exhaust air heat pump, then we should do it too.”
Templates for motions facilities for individual members of the housing associations to put pressure on the board in energy matters.
- Joint procurements
Joint procurements of renewable energy such as geothermal energy, solar cells and investments in new control systems. Doing things together not only creates security but also a financial incentive in the form of discounts on larger purchased volumes.
- Shared and stored energy
We are lobbying for microgrids, ie a technical solution that involves using existing electricity grids and adding locally renewable energy that is both stored and shared between the properties.
- The system shift to a flexible energy market
Increases profitability not only for property owners but also for society because we can avoid large investments in new CHP plants and expensive cabling.
To date, 20 housings associations in Hammarby Sjöstad have made investments in energy efficiency improvements, control systems, geothermal heat and solar cells totaling SEK 113 M (SEK 540 / square meters). The result is that the associations have reduced their energy costs by more than 50%.
The return varies between the different projects depending on the conditions but is normally in the range of 8–12%.
The joint procurements of energy investments have increased the interest of most housing associations and many of them has made large investments. It was above all the combination of discounts for larger volumes and the possibility of exchanging experiences between the associations that contributed to the large response.