What’s the holistic approach?
The holistic or systemic approach implies that all types of building related energy uses (heating, lighting, cooling, air conditioning, ventilation) and outdoor climatic and local conditions, as well as indoor climate requirements are considered. The overall energy performance of a building or of a cluster of buildings may be strongly influenced by the sometimes complex and dynamic interactions between these various aspects.
The holistic approach is a key instrument to set and evaluate policy targets. Clear and consistent policy targets play an important role in driving innovation in the building sector.
The set of EPB standards …
take into account
• building design
• new & existing buildings
• simple & complex buildings
Why a holistic approach?
In the past, energy performance requirements were set at component level – minimum thermal insulation levels and minimum efficiencies of products. This, however, leads to sub-optimal solutions and creates a barrier to the necessary technology transitions.
The holistic approach to assessing the overall energy performance of buildings and the built environment, provided by the set of EPB standards, is a key tool to overcome these barriers.
The set of EPB standards enable to assess the overall energy performance of a building. This means that any combination of technologies can be used to reach the intended energy performance level, at the lowest cost.
Due to this 'competition' between different technologies, the holistic approach is a key driver for technological innovation and change. Countries using the approach for several years – take, for instance, the Netherlands – have experienced large scale implementation and cost savings on a variety of new technologies.
And there is the economic benefit: Energy expenditures account for a substantial part of a building’s total operating costs.