Should we include fixed costs in calculating the costs of energy consumption? Fixed costs are in $ / kW, and variable costs are in $ / kWh. In the baseline model is a different number of kW and kWh as compared to the proposed building. So the variable cost is different in the proposed and baseline building and changes depending on the amount of kWh. However, we only know fixed costs for the proposed building. Should we make some calculations to calculate fixed costs also in the baseline building? Usage of the same fixed costs in the proposed and baseline building does not seem to us a good solution.