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This paper investigates how the cost-effectiveness of different energy-saving measures (ESMs) in buildings is dependent upon energy prices and discount rates. A bottom-up modelling methodology is used to assess the profitability of different ESMs for Swedish residential buildings. The cost-effectiveness and total techno-economical potential for energy saving of each ESM are calculated for three different scenarios of energy prices up to year 2050 and for different discount rates, including an estimate of the market potentials derived by applying the implicit discount rates given in the literature. The three energy-price scenarios give similar techno-economical reductions of delivered energy (by 31–42 %), as well as a similar ranking for the investigated cost-effective ESMs. This means that there are cost-efficient opportunities for energy reductions in Swedish households for any future developments of the …