SciTransfer
CALECHE · Project

Sustainable Energy Renovation Solutions for Historic Buildings and Cultural Heritage Sites

constructionTestedTRL 5

Imagine trying to make an old castle energy-efficient without ruining its historic look. This project creates a smart toolkit to help owners pick the right materials, like plant-based insulation and hidden solar panels. It's like giving old buildings a modern energy upgrade that respects their original beauty.

By the numbers
25%
Share of European building stock that is historic
4
Number of use cases for demonstration
3
Number of promising technologies improved (Bio-insulation, Window repair, BIPV)
The business problem

What needed solving

Historic buildings are hard to renovate because energy-saving upgrades often clash with strict preservation laws. This makes 25% of European buildings inefficient and expensive to maintain.

The solution

What was built

A Decision Support System (DSS) with AI functionalities, high-performance bio-insulation, a window repair methodology, and custom BIPV integration techniques.

Audience

Who needs this

Heritage building ownersSpecialized architectural firmsGreen building material suppliersMunicipal urban planning departmentsEnergy auditors for historic properties
Business applications

Who can put this to work

Specialized Construction
SME
Target: Heritage restoration contractor

If you are a restoration contractor dealing with strict conservation rules and energy leaks — this project developed a decision support system (DSS) that helps you choose the right renovation path. It ensures you maintain aesthetic value while increasing comfort and lowering emissions.

Green Building Materials
mid-size
Target: Bio-based insulation manufacturer

If you are a manufacturer dealing with moisture problems in old walls — this project developed interior bio-insulation with high hygrometric performance. This allows you to offer a circular, low-carbon product specifically for the 25% of European buildings that are historic.

Renewable Energy
any
Target: BIPV (Building Integrated Photovoltaics) installer

If you are an installer dealing with public resistance to solar panels on old landmarks — this project developed custom BIPV integration techniques. This increases public acceptance by blending technical innovation with heritage preservation.

Frequently asked

Quick answers

What is the cost or price of the developed solutions?

Based on available project data, specific pricing or cost-per-unit for the materials and DSS is not provided.

Can these solutions be applied at an industrial scale?

The project targets the 25% of the European building stock that consists of historic buildings, demonstrating scalability across 4 use cases.

How is the IP or licensing handled for the AI and DSS?

Based on available project data, the specific licensing terms are not mentioned, but the project includes the integration of AI functionalities into a Decision Support System.

How does this help with building regulations?

The DSS is designed to ensure renovation processes are in compliance with national and international regulations regarding cultural heritage.

What is the timeline for implementing these results?

The project runs from 2023-10-01 to 2026-09-30, meaning results are being refined through 2026.

Consortium

Who built it

The consortium is well-balanced for commercialization, featuring 18 partners across 7 countries. With a 39% industry ratio (7 industrial partners, 7 of which are SMEs), there is a strong link between academic research and market application, ensuring the DSS and materials are viable for real-world construction businesses.

How to reach the team

Contact the Commissariat à l'énergie atomique et aux énergies alternatives (CEA) in France.

Next steps

Talk to the team behind this work.

Contact us to connect with the CALECHE consortium for early access to the DSS toolkit.