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REGENeration of neighbourhoods towards a low-carbon, inclusive and affordable built environment
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Smart Planning Renovation INsights for a Decarbonised Built Environment
Public buildings represent a large share of energy consumption and greenhouse gas emissions in Luxembourg and across Europe. In this context, building energy renovation is recognised as a key strategy to reach climate neutrality. However, in practice, decision-makers often face fragmented information, long analysis times, and competing priorities between energy performance, environmental sustainability, and economic feasibility. This makes the renovation process challenging for municipalities, facility managers, and planners, often resulting in delayed projects or suboptimal renovation choices.
SPRINT addresses the existing challenges by developing a digital decision-support platform that integrates energy simulation, life cycle environmental assessment (LCA), and life cycle costing (LCC) into a single automated workflow. These three dimensions are coupled through a multi-objective optimisation framework in the platform, enabling users to rapidly compare renovation scenarios, quantify trade-offs, and identify solutions that achieve the best balance between carbon reduction, energy savings, and cost-effectiveness.
A key innovation of SPRINT is the use of machine-learning surrogate models to accelerate detailed energy simulations, reducing full analysis time from months to a week. The platform also incorporates a structured database of representative renovation measures in Luxembourg, and marginal abatement cost curves (MACCs) to link investment costs to emission reductions, providing transparent and intuitive guidance for prioritising renovation measures.
SPRINT will be validated in several public building case studies in Luxembourg, in collaboration with Paul Wurth Geprolux, municipal partners, and stakeholders. These real-world applications will demonstrate how the platform can provide useful insights to guide renovation planning that reduces carbon emissions, enhances energy performance, and supports cost-efficient investment decisions.
The project will also develop an interactive web-based dashboard that enables users to explore scenarios, visualise impacts, and generate tailored recommendations. By providing advanced but easy-to-use tools to municipalities, building owners, consultants, and policymakers, SPRINT aims to accelerate renovation planning processes and contribute directly to Luxembourg’s climate goals and the wider European Renovation Wave.
