AUG 27-31
Professionals Program
The program
Water: Peter Scheer (Nijhuis Saur Industries) on how we can get the construction site WFD-proof (Water Framework Directive) and how groundwater can be used to reduce drinking water consumption.
Biobased & circular building materials: Rinke Wils (Triomf) on the challenges surrounding the use of not-yet-certified materials and the bamboo stage they developed together with Akeka.
Emission-free equipment and transport: Anne Koudstaal (TBI / Emission-0) on emission-free construction sites and festivals, electric transport, construction equipment and the opportunities of bi-directional charging.
Emission-free energy: Jordi Leijnse (NRG) on the smart and easy planning, management and monitoring of the increasingly complex energy networks of construction sites and festivals.
1:15 PM - 2:00 PM
2:00 PM - 3:30 PM
Through practical examples from the backstage tours and expert presentations, we discover how to take steps from starting up to scaling up.
Water: how can we use greywater more for drinking water reduction? We also discuss the Water Framework Directive and the adjustments needed at the construction site.
Biobased & circular building materials: how do we successfully bring new biobased and circular building materials to the construction site? We discuss, among other things, the most important preconditions besides sustainability and the new opportunities for carbon storage in biobased materials in the built environment.
Emission-free equipment & transport: we discuss new opportunities in the field of emission-free equipment, including bi-directional charging. Where do we stand now in terms of technology? How do we organize the structure and the mutual energy settlement at the construction site and the festival grounds? Finally, we look at the concrete next steps for further development and scaling up.
Emission-free energy: we dive into the complexity of emission-free energy grids. We also look at how monitoring, dashboards, and smart planning tools make these understandable and manageable. The 40 energy experts of the 48-hour hackathon present their most relevant outcomes for the energy transition. We also zoom in on the newly to be published NTA guidelines for the use of hydrogen and how this serves as a blueprint to drive scaling up.
15:30 - 16:00
16:00 - 16:20
4:20 PM
5:30 PM
6:55 PM
The speakers
Harm Edens
Program maker, writer, moderator, speaker, and theater maker: Harm Edens has been a familiar face in the Dutch media for decades. With his sharp observations, infectious humor, and substantive curiosity, he knows how to make complex subjects accessible to a broad audience. Harm asks questions, punctures self-evidence, and always looks for the real conversation.
For the general public, he is best known as the permanent anchorman of the satirical current affairs quiz Dit Was Het Nieuws. In addition, he makes programs for Omroep Gelderland such as Buitengewoon and Het Vierdaagse Journaal, and presents the sustainability program The Green Quest on BNR.
An important part of his work is dedicated to sustainability and the future of our planet. As an ambassador for the World Wide Fund for Nature (since 1996) and the Jane Goodall Foundation, he is actively committed to nature conservation, biodiversity, and awareness. Also as a speaker and moderator, he inspires organizations, governments, and businesses to look at societal challenges with a fresh perspective.
Peter Scheer
Peter Scheer is Business Development Manager at Nijhuis Saur Industries and focuses on circular water solutions for the built environment. With a background in horticulture, vertical farming, and international projects in countries including Nepal, Egypt, Barcelona, New York, and Uganda, he brings a unique combination of technical knowledge, entrepreneurship, and sustainability.
As founder of SEMiLLA Sanitation Hubs, he developed innovative concepts combining sanitation, water treatment, nutrient recovery, and food production in closed loops. Today, he continues this mission within Nijhuis Saur Industries, working on water-neutral buildings, circular area development, and future-proof infrastructure.
During the Professionals Program, Peter shares his vision on the role of water in the construction transition and how smart, circular water systems can contribute to sustainable, resilient, and future-proof construction sites, buildings, and living environments.
Kees Vendrik
Kees Vendrik (1963) is chairman of the National Climate Platform, the link between society and policy. He was nominated by the cabinet in 2022 as the independent chairman of this platform.
As chairman of the electricity table, he played an important role in the creation of the Climate Agreement in 2019. From 2017 to 2022, Vendrik was chief economist of Triodos Bank and entered the Senate in 2019 representing GroenLinks. Prior to that, he was a member of the Netherlands Court of Audit for six years. From 1989 to 2010, he was a member of the House of Representatives for GroenLinks.
Kees Vendrik graduated as a political scientist (international economic relations). In addition to his work as NKP chairman, he holds several ancillary positions. For instance, he is chairman of the Temporary Emergency Fund for Energy and chairman of the IRBC Agreement for Renewable Energy.
Anne Koudstaal
Anne Koudstaal is Sustainability Tour Guide at TBI and co-initiator of Emission-0. For over ten years, he has been working on accelerating the sustainability of the construction sector. He was at the origin of innovations such as PlasticRoad, developed the strategy for emission-free construction at Dura Vermeer, and contributed to the establishment of WattHub, the fast-charging network for construction equipment and heavy transport.
During the Professionals Program, Anne shares his vision on the transition to an emission-free construction site and shows how cooperation, innovation, and scaling up are the keys to making the construction sector future-proof.
Claudia Walraven
Claudia Walraven is a freelance sustainability advisor and project manager. As Mediator of Innovation (MOI) for the municipality of Amsterdam, she works within the National Growth Fund Programme Future-Proof Living Environment with more than 130 partners on scaling up circular and emission-free innovations in the construction and infrastructure sector.
In Living Labs such as De Nieuwe Straat, she puts innovations into practice, such as bio-based asphalt, robotisation for reuse, and hydrogen generators (for which she is also helping to develop a safe NTA standard).
With over fifteen years of experience in festival production and ten years of expertise in sustainability, Claudia connects the events world with urban innovation and construction. In addition, she is the chairwoman of the Amsterdam Events Association (EVA). In this role, she represents the interests of the sector and is committed to a sustainable, innovative and well-connected Amsterdam events sector.
Jordi Leijnse
For more than 10 years, Jordi Leijnse has been active in the energy transition, with extensive experience in sustainability issues within the public domain, ranging from making festivals more sustainable to the smarter roll-out of charging infrastructure. Six years ago, he started as co-founder of NRG Group. Today, as CEO, he steers NRG's broader mission: making the energy transition work for every sector with a temporary power requirement.
Rutger de keijzer
Rutger de Keijzer is the founder of DuurzameBouwkeet, which makes construction site trailers smarter and more energy-efficient so they can be supplied with emission-free power. They do this using solar panels and hydrogen fuel cells instead of the familiar diesel generator.
While the construction sector is leading the way in sustainability, the construction site trailer itself often lags behind. DuurzameBouwkeet's EMS addresses this by shaving peak currents and balancing energy supply and demand while maintaining comfort, with a power supply that is 20 times smaller than normal.
During the development of the conversion kit and subsequently a number of successful projects at KWS, Schiphol, and VSF, DuurzameBouwkeet learned a great deal about energy management on the construction site and how we can use scarce sustainable energy as efficiently as possible.
Michelle Mollema
Michelle Molema has always had a passion for sustainability and innovation, focusing on relevance and scalability. Professionally, this interest has taken her to many different places where transitions are shaped; she has worked in the business world, the creative sector, and in government.
In addition to her years of involvement in various roles with Into The Great Wide Open and Lab Vlieland, she works as a Living Lab Coordinator at the AMS Institute, where she implements scientifically-driven innovation pilots in fields such as energy and circularity within an urban context. During 'De Bouwplaats van de Toekomst' (The Construction Site of the Future), she hosts the program on circular materials, where she eagerly explores current ambitions and what is needed to realize them.
Patrick Kemperman
Patrick Kemperman is Cluster Manager Sustainable Living Environment & Traffic at BAM. He works on complex infrastructure and area challenges where technology, nature, legal issues, and societal interests converge. Working towards a better living environment is the common thread in his career. In doing so, he always has an eye for the political-administrative reality as well as for public support. Patrick believes that the major transitions of our time can only succeed if innovators, technical specialists, administrators, and the community work together from the very beginning.
In addition to his work at BAM, Patrick is actively committed to the further development of his field. He is a board member of the Association for Environmental Management (POM) and of the Network of Green Consultants (NGB), the industry association for ecological advice and research. From both roles, he works on the question of how nature, society, and spatial development can reinforce each other.
Linda Vermaat
Linda Vermaat is a moderator, driver of social innovation, and former director of Innofest. In five years, she transformed Innofest from an EU project with freelancers into a national NGO with a permanent team. She worked with more than 200 startups testing sustainable innovations in practice, from energy solutions to food and water at festivals and in other living labs.
Linda supervised tests with hydrogen, battery storage, and smart energy systems at locations where the pressure on the grid is highest: festival grounds. She knows that a good technical solution only works if people also understand, trust, and use it. That is why she focuses on the human side of the energy transition: how to realize change that is not only smart, but also practical and widely supported.
As a moderator, Linda brings two decades of experience in leading conversations on complex themes. She combines sharp insights with warmth, curiosity, and a bit of humor. Her style brings people from different backgrounds together, from energy experts to civil servants, lets them challenge each other, and helps the group move toward concrete next steps.
Arjan Walinga
Arjan Walinga works on behalf of Bouwend Nederland to accelerate emission-free operations and transport in the construction and infrastructure sector. In his role, he connects clients, contractors, suppliers, and governments to enable the transition to clean equipment, sustainable logistics, and future-proof construction processes. With a background in logistics, digitalization, and innovation, he works on themes such as emission-free construction sites, charging infrastructure, demand aggregation, and smart construction logistics.
PETER VAN SCHAIK
Peter van Schaik works as a program manager at Rijkswaterstaat (RWS), the executive agency of the Ministry of Infrastructure and Water Management. Within RWS, Peter is responsible for the Clean and Emission-Free Construction program. He co-authored the 'Roadmap for Clean and Emission-Free Construction' in collaboration with government bodies, market parties, and knowledge institutions. This roadmap provides clarity to market parties and authorities regarding the transition to emission-free construction equipment. In addition, Peter chairs the National Agenda for Charging Infrastructure (NAL) working group on charging infrastructure for construction, and is a pioneer of the international 'Leap to Zero' network, which aims to stimulate emission-free construction in Europe.
JEROEN DIJK
Jeroen Dijk has been a client for the Traffic and Public Space department of the Municipality of Amsterdam since 2018. He stimulates cooperation between municipal departments and city areas and improves work processes for better chain cooperation, also with market parties. In addition, in his commission he has urban facilities such as circular hubs realized and maintains contact with the city government. He is responsible for sufficient resources to make circular working possible and ensures a clear division of roles, tasks, and responsibilities. From his role, he connects people, knowledge, and innovation to make the city future-proof and circular.
Practical information
The trip to Vlieland
The round trip to Vlieland is included in the ticket. This is by ferry and departs from the port of Harlingen.
Outward journey: 09:05 AM (duration 95 min)
Return journey: 4:50 PM or 7:25 PM
Ticket price
Regular ticket (including program, boat trip, lunch & drinks at the festival grounds) | €255,-
Cultural rate (for cultural organizations and organizations with ANBI status) | €155,-
Are you eligible for a cultural rate? You can request this via bouwplaats@intothegreatwideopen.nl. Ticket prices exclude VAT.
Staying overnight on Vlieland
Would you prefer to spend the night on Vlieland? You can always do so on your own initiative. Would you like to stay in a hotel? Email bouwplaats@intothegreatwideopen.nl, and we will see if there is a spot available.
Contact
Do you have questions about Bouwplaats van de Toekomst, or do you want to build with us? Email rob@intothegreatwideopen.nl.
FOR the press
Press releases and accompanying visual material can be found in the press kit.






























