The energy pass
ista can provide two variants of the energy pass: the so-called demand-oriented and the consumption-oriented energy pass. For the demand-oriented energy pass, building envelopes, construction materials and the heating system are analysed. Afterwards the total heat loss of the building is determined based on this data. The result is an objective picture of a building's energy quality, independent of the behaviour of individual consumers.
The consumption-oriented energy pass on the other hand states the actual energy consumption per square meter. For this type of energy pass, the corresponding data is determined on the basis of the heating cost bills of the last three years. For non-residential buildings, additional details about the power consumption are required. The measured consumption depends on the behaviour of the tenants.
Both variants of the energy pass are available at ista Deutschland: The Essen company is responsible for the preparation of consumption-oriented passes for residential and non-residential buildings, while the cooperation partner Cycle Systems, market leader for energy passes in the Netherlands, is in charge of demand-oriented energy passes.