 if any of this insulation is installed on a building</dd>
<dt>Variable cost</dt><dd>this capital cost is spent per unit area insulated, in addition to the fixed cost</dd>
<dt>Maximum effect</dt><dd>this parameter determines by how much the insulation can reduce overall demand. For example, if maximum effect is 15%, and a building has 200m<sup>2</sup> of insulatable area and 5MWh/yr of heat demand, installing all 200m<sup>2</sup> will reduce heat demand by 5×0.15 = 0.75 MWh/yr. The model can choose to inst