This low-temperature heating and high temperature cooling HVAC system (LowEx) is a novel system which delivers low-temperature thermal heating and high temperature thermal cooling by using the infrastructure coupled with the ground source heat pump. It is designed to maximize the effectiveness of ground source heat pump systems.

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A smart way to understand how much solar energy can be generated across an entire neighbourhood. Using digital 3D models and energy simulations, it identifies the rooftops and façades best suited for solar panels and helps communities plan renewable energy investments more effectively. Beyond the technical potential, the approach also considers costs, opportunities for local energy sharing and the benefits of involving residents in energy communities. Designed to be adaptable to different cities and contexts, it supports the development of cleaner, more resilient and locally produced energy systems.

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Danfoss Leanheat Building is an AI-based software and control system used to manage heating at building level. It replaces the traditional approach based on a fixed relationship between heating supply temperature and outdoor temperature, known as weather compensation. Instead, the solution combines an adaptive dynamic building model with weather forecasts and measured indoor temperatures from apartments. This allows the system to estimate the optimal heating supply temperature at any given time while maintaining indoor comfort, taking into account the building’s passive thermal storage capacity as well as solar radiation, wind, and outdoor temperature predictions.

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The solution combines solar energy generation, battery storage and electric vehicle charging into a single, intelligent building energy system. Solar panels integrated into building façades and rooftops produce clean electricity while also improving indoor comfort by reducing overheating. Energy can be stored in repurposed batteries, giving a second life to existing technologies and helping balance supply and demand. The system also supports smart charging of electric vehicles, allowing cars to store or even supply electricity back to buildings when needed. By optimising energy use in real time, this approach makes neighbourhoods more energy-efficient, flexible and resilient.

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The study, design, and testing of a system to retrofit and thermally activate an existing tunnel (in operation or abandoned) for an energy purpose not envisaged originally. The system includes a network of pipes capable of transporting a heat transfer fluid. A prototype of such a system is being investigated by means of preliminary numerical analyses with the final aim to install it in the Piedicastello tunnels within the Trento demo. The tunnels, today abandoned and devoted to an exhibition hall, will be turned into a heat exchanger with the ground and with the internal environment for road de-icing and/or heating and cooling purposes of an adjacent building to test the potential of the identified solution in a realistic operating environment.

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A new developed smart home lighting control system is demonstrated in SAB Housing Association Department 75 in Sønderborg, DK. The demonstration site includes 19 double terrace houses, in total 38 apartments. The smart home systems in the apartments control the lighting, electrical appliances, access controls and burglar alarms. The electrification control system can also be connected to the heating control system. 

Remotely from a smart phone app, the user can turn on and off each lighting unit and electrical appliance in the apartment and control the temperature of the heating system. The regulation can also be activated from a central panel placed on a wall in the apartment.  

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BIM and Digital Twins are used to optimise building performance from environmental and economic perspectives. The approach enables a comprehensive evaluation across the building lifecycle, including environmental impact, costs, and energy use, as well as aspects such as community inclusivity, use of indoor and outdoor spaces, water management, noise and pollution, and architectural quality.

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Local energy storage systems using recycled electric vehicle batteries give a second life to batteries that are no longer suitable for transport. Combined with solar panels, these batteries store excess renewable electricity and release it when energy demand is higher. The systems can be installed in a wide range of buildings, from schools and offices to residential developments, helping to create more flexible and self-sufficient local energy systems.

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A two-step methodology that aims to select the cost-optimal solutions for retrofitting of buildings in large-scale renovation process (200-300 dwellings). From a set of different potential combinations of passive elements (e.g., adding different insulation materials with different thickness and/or windows) and active elements (e.g., heat pumps / multi-split air conditioning for heating, cooling and DHW and/or photovoltaics), the methodology helps to select the most appropriate combination considering the energy performance and economic parameters. The process aims to select solutions that achieve a 50% reduction in the energy demand and/or a significant improvement in the thermal comfort conditions. A detailed economic model is part of the methodology giving as a result the following outputs: investment costs deducting grants for each owner and life cycle global costs.

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