The Spanish demo case is located in the metropolitan area of Granada, between the municipalities of Gójar and Dílar. Located on the foothills of the Sierra Nevada mountains, the region is characterised by a mild Mediterranean climate.

The planned four storey apartment complex consists of 30 apartment units with the ground floor to be used for commercial activities. The complex was originally planned to meet Nearly Zero Energy Building (NZEB) standards, but will be upgraded to become a positive energy building as part of the EXCESS project. For this purpose, the apartment complex will be equipped with a number of technical and architectural design features to minimise energy demand and maximise the self-consumption of generated renewable energy, making it one of the very first positive energy buildings in Spain.

The demo case building is part of the larger development project NIVALIS, Spain's first planned zero energy district,  designed as a “smart, healthy, solar city” prioritising ecological sustainability, energy self-sufficiency and e-mobility.

News & updates

Key technologies & innovative solutions

As sunshine is an abundant commodity in Spain, the architectural design of the positive energy apartment complex has been modified to optimise energy generation via photovoltaic applications. The energy concept of the building prioritises the direct self-consumption of renewable energy generated by PV-installations. Surplus electricity is stored in a battery for daily use and can also be fed into the grid. EV charging stations for cars of residents are another feature to encourage low-carbon living and high self-consumption. Additional key features of the PEB include a geothermal system that has been designed for optimal seasonal performance as well as an integrated state-of-the-art control system to balance energy flows and effectively couple electrical and thermal storage.

Moreover, the building incorporates sustainable design features such as a rain water catchment system, vertical gardens for food production, a building form that harnesses natural ventilation and generous public spaces to encourage community interaction.

Expanding Flexibility
100 kWh lithium batteries for advanced energy flexibility functionalities and continuous supply.

Building level innovation
Installation of 120KW heat pump for heating & cooling, 75 KWp PV installation and 5 EV charging station.

System level innovation
An integrated control system enables the balancing of energy generation, consumption and sharing. The human machine interface allows for intelligent, user-centric energy management.

Smart contracts
The Building Energy Management System (BEMS) regulates energy sharing and trading to reduce overall energy consumption.

Upcoming milestones

Major project milestones for 2021 include the completion of construction documentation by May, the planning departments’ final urbanisation project approval (expected in early summer) and the issuance of the necessary building permits in July to September. Site works and the sales process will be ongoing between 2021 and 2023, whilst the monitoring process, to measure the building’s performance, is estimated to start in December 2022.

Further information & resources

As a H2020 funded project, in-depth and technical information on the demo cases is made available to the public in the form of reports and other publications that can be downloaded via the EXCESS website (a selection of these is included below). The project design, renderings and videos are produced by the architecture studio U·rb atelier in collaboration of AWA.

Main stakeholders involved

The spanish EXCESS demo is led and coordinated by CENER (National Renewable Energy Centre). CENER participated in the development of the Nivalis energy and mobility strategy in collaboration with the architectural firm U-rb atelier. Further on site partners include the Andalusian Energy Agency, TRYCSA and NETxAutomation.