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Modellvorhaben zum Austausch von Nachtstromspeicherheizungen 9energy factor for electricity (not renewable) drops to 2.0, this statement still will betrue.• In most instances, both at a total cost basis as well as from landlords and tenantsperspectives referring to second calculation ordinance (in council housing stock) theexchange to condensing gas boilers or district heating is economical compared to a1:1 replacement of electric off-peak storage heaters.• The building is more future-proof and has increased energy efficiency with acombination of exchange of electric off-peak storage heaters and improved heatinsulation of the building. The operating conditions of use for a variety of modernheating systems (such as condensing boilers, heat pumps, renewable energy) areimproved. The combination of exchange of electric off-peak storage heaters andbroad heat insulation of the building envelope is more expensive compared to a 1:1replacement.• The project finds that the founding for exchange of electric off-peak storage heaters(scrapping premium) is no more necessary, due to:- exchange already being an essential part of redevelopment strategies,- the removal of electric off-peak storage heaters not necessarily resulting intheir disposal, with reinstallation seen in other buildings,- the removal of electric off-peak storage heaters already having been foundedby other funding instruments such as founding’s for installation of new energyefficient heating systems.Abstract BMVBS-Online-Publikation 1/2013