IEBB Projects

Wthin the IEBB program, TU Delft is involved in 12 projects spanning many aspects of the energy transition. Read more about the projects here.

Theme 1: Renovation Concepts

Project 1.3: 2ndSKIN® Configurator

Co-developed by TU Delft, 2ndSkin® is a proven renovation concept that can be applied to homes to make them Zero Energy or Zero Energy-ready. 2ndSkin was conceived of as a solution for renovating homes, primarily from the outside with minimum disruption to occupants, and focused on providing new, high-quality facades and durable installations. 

This project is focused on the development of an decision-making and consultation tool – a configurator – that accompanies the 2ndSkin® renovation concept. The configurator will take into account:

  • The baseline conditions of a home and the renovation objectives
  • The wishes of the building users •The technical possibilities of the 2ndSkin solution

Partners: TNO, BIK Bouw, TUD, Jaga Konvektco BV, Sto Isoned, Itho Daalderop
TU Delft Researchers: Stella Boes and Sacha Sylvester, Faculty of Industrial Design
Timeline: 2020 – 2021

Photo: KAW Architects

Project 1.5:  Collective Heat

The number of homes connected to heat networks is expected to grow from 340,000 today, to more than one million by 2030. This project focuses on developing smarter methods of connecting homes to low-temperature heat networks.

As part of this project, practical, easily-to-use models and decision-making tools will be developed that take into account costs, circularity, building type, and residents' experiences with comfort and hassle.

The overall objectives of the project include:

  • Reducing costs to connect to the heating network
  • Reduce the operating temperature of heat networks from HT (95- 85oC) to MT (75-65oC)

This project is building on the WarmingUP project, which is investigating low temperature heating for collective heat networks.

Partners: TNO, Vattenvall, Eneco, Ennatuurlijk, HVC, Stadsverwarming Purmerend, Arcadis, TUDelft, Almere
TU Delft Researchers: Thaleia Konstantinou, Prateek Wahi (PhD Researcher), Henk Visscher and Martin Tenpierik, Architecture and the Built Environment
Timeline: 2020 – 2023

Theme 2: Data-driven Optimization of Renovation Concepts

Project 2: Data-driven Optimization of Renovation Concepts

The aim of this project is to deliver new, data-driven tools – digital twins – that make it possible to achieve high operational performance with energy and indoor climate systems, and to guarantee performance levels over a long period of time (> 25 years).

The project is organized along six activities:

  1. Gathering information from existing databases & knowledge
  2. Understanding the interaction between resident behaviour and renovation concepts
  3. Piloting an energy monitoring campaign – measuring energy before and after a net-zero energy renovation
  4. Predicting, diagnosing and optimizing with data-driven digital twins
  5. Scaling up from the building to (social) building stock level
  6. Forming a learning community to share knowledge & insights

Partners: TU Delft, TU Eindhoven, HHS, Saxion, TNO, Aedes, Arcadis, Brink Climate Systems, Be Next, DUWO, Milieu Centraal, Making Space, Office Vitae, Vabi, Van Wijnen, W/E, Zehnder Group
TU Delft Researchers:

  • Faculty of Architecture and the Built Environment: Laure Itard, Arjen Meijer, Henk Visscher, Herman van der Bent (PhD Researcher), Twan Rovers (PhD Researcher)
  • Faculty of Industrial Design: Stella Boes, Sacha Sylvester, David Keyson, Luyi Xu (Post Doctoral Researcher)

Timeline: 2020 – 2024

Photo: DUWO

Theme 4: Digitizing the Renovation Process

Project 4.3: 3D Printing & Logistics

The goal of this project is to develop an automated process to optimize and manufacture building components enabling passive design toward energy transition.

The process involves the parametric generation of multiple design configurations optimized for minimal energy consumption and allows the end user to select a custom solution. Starting with a digital model of existing buildings, the process includes parametric design, optimization, and 3D printing using artificial intelligence. Furthermore, in this project concepts are developed and demonstrated (e.g. sunshading and trombe walls), which illuminate the entire process from parametric optimization to user preferences and final production.

Partners: TU Eindhoven, VolkerWessels, ESTECO SPA, Arup bv, TU Delft, Royal 3D, Saint Gobain
TU Delft Researchers: Özgün Balaban (Post Doctoral Researcher), Sevil Sariyildiz, Martin Tenpierik, Thaleia Konstantinou, Serdar Asut, Paul de Ruiter, Michela Turrin, Faculty of Architecture and the Built Environment
Timeline: 2020 – 2021

Photo: The Green Village

Theme 5: Behaviour in the Energy Transition

Project 5.2: Strategies for promoting energy efficiency renovations in the Dutch owner-occupied sector

Despite the increasing value proposition associated with energy efficiency renovations in owner-occupied homes, there is still a need to understand the cognitive biases and hidden barriers (“transaction costs”) standing in the way of energy efficiency renovations. This project focuses on:

  • Diagnosing cognitive biases of homeowners during the renovation process: This will be done through desktop research, the development of a conceptual framework, surveys among households, interviews municipal representatives, lab experiments and data analysis.
  • Assessing hidden barriers (the “transaction costs”) for energy efficiency renovations: This will be done through desktop research, the development of a conceptual framework, surveys among households, a focus group, interviews with suggested municipal representatives, empirical research and data analysis.
  • Provide homeowners with a hassle-free decision-making process for energy efficiency renovations: This will be done through nudges and interventions.

Partners: TU Delft, Gemeente Den Haag, Gemeente Amsterdam, Enpuls (Buurkracht), MilieuCentraal
TU Delft Researchers:

  • Architecture and the Built Environment: Shima Ebrahimi (PhD Researcher), Queena Qian (project leader)
  • Technology, Policy & Management: Gerdien de Vries 

Timeline: 2020 – 2023

Theme 6: Complex Assessment Frameworks

This project aims to develop a standardized assessment framework for owners of large residential building stocks, such as housing associations. The framework is intended to provide local governments and building owners with a unified approach for investment decisions with respect to energy renovations. It will take a wide range of complex criteria into account, such as community context, organizational objectives, building properties and technical solutions.

The project is being carried out in the following phases:

  • The development of an assessment framework (Activity 1)
  • The development of key performance indicators (e.g. based on circularity, carbon emissions and costs) that support the monitoring and evaluation of different renovation approaches (Activity 2)
  • The development of cost-efficient, no-regret renovation measures for different building archetypes and contexts (Activity 4)

The insights from this project are contributing to other national initiatives such as Renovatieversneller.

Partners: TNO, TU Eindhoven, TU Delft, Hanze Hogeschool, Hogeschool Utrecht, OnderhoudNL, W/E, Groenwest, Woonbedrijf, Area, Wocom, AEDES, Vabi, Arcadis, Atriensis, VGM, Making Space, Vastgoedbelang, Netbeheer Nederland
TU Delft Researchers: Paula van den Brom (Post Doctoral Researcher), Arjen Meijer, Ruben Vrijhoef, Architecture and the Built Environment
Timeline: 2020 – 2021

Theme 7: Value Chain Innovation

Project 7.2: Standardising and Bundling Demand of Housing Associations

There are opportunities to standardize and bundle demand across housing associations, and in turn, achieve faster, more cost-effective renovations in the residential building sector.

The aim of this project is to determine standard specifications for low energy renovation and the conditions that make bundling of demand by housing associations possible. The research question is: What asset management strategies and organisational conditions enable and encourage housing associations for (inter)organisational synchronising in the demand for deep renovation?

The project will result in the development of specifications for bundling demand, and will provide a learning environment to share knowledge and experience of bundling demand and matching supply. This project is related to the Renovatieversneller.

Partners: TU Delft, HU, Avans, Aedes, Onderhoud NL
TU Delft Researchers: Ad Straub and Frits Meijer - Architecture and the Built Environment
Timeline: 2020 – 2021

Project 7.5: Energy Cost-neutral Housing Renovation

New business models are needed to realize a rapid energy transition within the building stock. This project aims to seize an emerging opportunity to aggregate and scale up the efforts of SME construction companies with investors to realize the energy transition. This project aims to implement cost-neutral solutions for energy renovations in residential buildings by developing innovative approaches throughout the construction value chain. The project focuses on scaling up enthusiasm for energy renovations, as well as carrying out affordable, quality renovations with energy guarantees.


The results of this project will be relevant for construction companies, private homeowners, VVE's, investors and social housing associations.


Visit the Woonlasten Neutraal Renoveren website here for more information.

Partners: Servicebureau WNR, DNA in de Bouw, Kennisinstituut KERN, TU Delft
TU Delft Researchers: Erwin Mlecnik, Architecture and the Built Environment
Timeline: 2020 – 2021

Photo: Carl-Peter Goossen

Theme 8: Heat Pumps

Project 8.1: Heat Pump Configurator

The aim of this project is to develop a easy-to-use decision-making tool – a configurator – to determine the optimal, most efficient, and most cost-effective configuration for heating systems for specific households or buildings. The configurator will provide installers, consultancies or homeowners to determine the appropriate heating system based on energy demand, as well as the context of the household (for example, taking into account the supply of solar energy and the size of the household, among other factors). The configurator will also generate a visual overview (i.e. a dashboard) summarizing the optimal configuration with graphs and business cases for users.

TU Delft's role in the project will consist of the development, through participatory research and design approaches, of a feedback loop between product developers and residents. This feedback loop will be supported by a computational model (or digital twin) in the context of a renovation process.

Partners: Saxion, HAN, Hogeschool Utrecht, TNO, Rensa, Stanstechniek Gaanderen, Viridi, Solarfreezer, TU Delft
TU Delft Researchers: Evert van Beek (PhD Researcher), Stella Boes and Sacha Sylvester, Faculty of Industrial Design
Timeline: 2020 – 2024

Project 8.6: Magnetic Heat Pumps

This project aims to advance the development of a magnetocaloric heat pumps – a type of heat pump that has the potential to use far less energy, is quieter, and does not require harmful substances to run relative to conventional heat pumps. This technology is being developed for use across the built environment, such as in residential buildings and houses.

This project focuses on the development of an active magnetic regenerator (AMR) - the centerpiece of a magnetocaloric heat pump. The project will be carried out by assessing the system operating conditions, optimizing heat pump design, manufacturing an optimized active magnetic regenerator, and testing the regenerator in an experimental magnetic heat pump. 

Partners: Saxion; HAN, Hogeschool Utrecht, TNO, Rensa, Stanstechniek Gaanderen, Viridi, Solarfreezer, TU Delft, Magneto BV, RSO-technology, ITHO
TU Delft Researchers:

  • Applied Sciences: Diego Pineda (PhD Researcher), Ekkes Brück
  • Mechanical, Maritime and Materials Engineering: Carlos Infante Ferreira

Timeline: 2020 – 2024