In my work I try to close the ‘idea-action’ gap in sustainability and circular economy. Hence, my research often leads to tools and frameworks to help organisations and individuals make sense of complex sustainability issues and allow them to develop feasible but impactful solutions. Through the circular and sustainable start-up HOMIE, we also put new business models in practice and we published on the effectiveness of the ‘pay per use’ business model here.

Below, you can find an overview of some of the sustainability tools and methods I (co-) developed with different colleagues around the world from academia and business, such as:


The Value Mapping Tool for sustainable business modelling: 

which was based on the following journal article on the Value Mapping Tool:

Later publications on value mapping include e.g.:


The Ecologies of Business Models approach to think more systemically about sustainable business model development:


The Environmental Value Proposition Evaluation framework to quickly evaluate and assess the impact of business models:


The Rapid Circularity Assessment to quickly assess the environmental potential of circular business model innovations:


The Slowing, Closing, Narrowing framework, to make sense of the different strategies in the circular economy: (open access)


The 10 steps to a Circular Business described in our book “Circular Business – Collaborate and Circulate:


The Value Hill to help companies retain value in new circular business models:  


The Circular Business Project to kick-start the transition to a sustainable business:


The Circular Business Model Experimentation cycle to support experimentation with new business models in the circular economy:

which was developed based on experiences during the Circular Business Project 


The Business Model Innovation grid for sustainability to support sustainable business model innovation:

which was based on the following journal article on Sustainable Business Model Archetypes: (original article) (content analysis on archetype adoption by large business)


The Circular Economy Toolkit and workshop process to guide companies in their move to the circular economy:


A range of tools to support Eco-design and innovation:

  • such as the eco-ideation tool to generate new eco-innovative ideas, during a quick individual brainstorm or group brainstorm:

  • and ‘pain/gain’ tool to quickly assess eco-innovations:


The emergent work on tools and cases to ideate, validate and implement circular strategies, developed by the PhD researchers at TU Delft I work with can be found here:


Finally, together with colleagues, I recently published an overview of Circular Business Model Innovation tools and methods, including a checklist on how to develop future tools – freely accessible here:


Most articles should be freely accessible through the links above or otherwise Researchgate.