Pioneering Innovative Positive Energy Building Solutions in four EU Climate Zones

Four demonstration projects - in which innovative yet cost-competitive building technology packages will be tested - lie at the heart of the EXCESS project. Adopting a holistic approach that takes conditions in the four main EU climatic zones into account, EXCESS partners have set themselves the ambitious goal of retrofitting or building four nearly-zero energy multi-storey residential buildings into Positive Energy Buildings (PEBs).

The four demonstration projects are:

  1. a former industrial complex in Graz, Austria (Continental climate),
  2. a social housing apartment complex in Hasselt, Belgium (Coastal climate),
  3. an apartment building in Helsinki, Finland (Nordic Climate) and
  4. a multi-apartment block in Nivalis, Spain (Mediterranean climate).

The factsheets presented in this section provide more detailed information about these exciting projects and will be complemented further by frequent updates and detailed documentation, as building retrofit activity advances and evaluation results become available.

Key Objectives of EXCESS Underpinning the PEB Demonstration Projects

Demonstration projects explore how a range of technical PEB solutions, which harness the most advantageous renewable energy generation options and energy storage technologies for the four climate zones, can be easily and seamlessly integrated. EXCESS targets a 10% market uptake for its cost-efficient PEB technology packages until 2030.

PEB solutions will be introduced that empower consumers, allowing them to actively participate in the management of their energy consumption in response to signals sent by system or market operators. The user-centric approach of EXCESS throughout the demo project optimisation process ensures that negative impacts (e.g. on comfort, health, etc.) are avoided.

Recognising the urgent need for financial and business models to drive a greater roll-out of PEBs in Europe and beyond, EXCESS will use the demonstration cases to identify cost-optimal solutions (reflecting service life as well as investment costs) that incorporate potential market revenues and flexibilities. To this end, EXCESS will also explore opportunities provided by the new EU electricity market directive, to implement advanced building-to-grid interactions.