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While employed in the process industries, I made some remarkable observations. The most important one was that there were many knowledge pockets – ranging from laboratories to heavy industry – working on novel and more sustainable technologies. The second one was, there was almost no contact between these pockets.

From these observations Traxxys emerged in 2004: the consultancy company that actively links and consults parties of all sorts with the purpose to speed up (investments in) innovation and enhance sustainability in the process industries and the energy sector.


Power producers Process industry

Consultancy service

  • Phase-in scenarios of electrified manufacturing processes

Unique Selling Point Traxxys

  • “Inside out” innovation with company teams
  • 39 years of experience

Startups with technical background

Consultancy service

  • Technology selection
  • Scale Up from startup to full scale industrial
  • Cost Estimating of process plants at any scale

Unique Selling Point Traxxys

  • Overview of technology portfolio
  • 2022 International Cost Engineering Councel Award winner for Traxxys Estimating Methodology to assess capex and opex of manufacturing plants

Knowledge institutes

Consultancy service

  • Scale Up of processes from lab to full scale industrial
  • Cost Estimating of process plants at any scale
  • Defining R&D targets by backcasting based on estimated full-scale process performance

Unique Selling Point Traxxys

  • Hands on experience in process industry

Banks, private equity

Consultancy service

  • Second opinion on sustainable manufacturing investments

Unique Selling Point Traxxys

  • Broad overview of technology portfolio for quick SWOT-assessment of
    investment options

Innovation and sustainability of processes have been constant factors in my career.
Corporates and mid-sized companies taught me how to achieve targets. They also thaught me how to innovate chemical manufacturing processes.

Henk Akse, founder


These are examples for different types of consultancy applied to different cases, since each client has individual needs for which we adjust our approach.

Energy saving
Inside Nouryon 6 studies were carried out coaching Teams of 10-15 people; purpose was to innovate base chemical processes
Technology selection
Helping a Startup that focuses on transition from diesel powered inland shipping to sustainable hydrogen by selecting the best fitting conversion technologies
Scale Up of novel processes
Making a conceptual design of a 20 kton/yr CO plant based on labscale CO2 plasma conversion data
Synthetic Methane Plant from air CO2 to supply energy to a city of 34.000 inhabitants
Revamping a 1000 MW fossil power plant to make it fully sustainable
Cost Estimating of process plants at any scale
2022 International Cost Engineering Counsel World Congress: award winning cost estimating methodology useful to establish capex and opex of sustainable manufacturing plants
Opportunities for electrification of existing chemical industry
Phase out / phase in scenarios of fossil-fueled / electric naphtha cracking in the Netherlands (timing, shift in power demand, location)
Consortia building
VDL / FUJIFILM / TUE consortium focusing on Dutch electrolyzer manufacture
Addcat / TNO / Traxxys consortium focusing on isothermal methanol production
EU project LOWCO2 with 10 partners on highly energy efficient CO2 capture / Spanish CELSA steel company as end user
EU project CHROMSTAR with 10 partners on energy efficient API separation / Swedish AstraZeneca pharma company as end user
Second opinion on sustainable investments
Advising private equity companies on investments in regional sustainable shipping
(Europe inland / North Sea)


We started to make out own consultancy business more sustainable by moving from fossil based heating of our offices to heat pump driven heating in 2018. Beginning of 2020 this was followed up by installing about 10 MWh of annual power production with solar cells on our roofs. 25% of this power was for private and 25% for business use. 50% was sold to to the power provider. Beginning of 2021 we installed two additional sets of heat pumps which covered the heating requirements of both the office and the private parts of the building. These units consume the 50% of power that used to be sold to the power provider. Our final investment will be in 2023, when we plan to install a solar boiler system on our roof, taking over the hot water heating requirements. What we learned: install as much solar power on your roof as you possibly can!


Sustainable mobility is a real challenge when you run a consultancy company on a budget. At the moment we preferably use public transport which is not really green as long as power is being generated in the Netherlands with coal and gas in the fuel mix. Next to this we use a car running on renewable diesel, which brings down CO2 emissions to 10% of its original value but does not really reduce the NOx-emissions. Finally, the bicycle always wins when our traveling distance is below 3 km, which is interesting since a lot of the total Dutch car mileage consists of these short distance trips.


Goods we need in everyday life we buy in as second life items. Likewise, goods we do not need any more we sell as second life items to other people who can benefit from it.

Henk Akse, founder, on personal decisions

  • Allnex Resins B.V. polycondensation, Bergen op Zoom
  • Allnex Resins B.V. polyaddition, Bergen op Zoom
  • Albemarle, Amsterdam
  • Beljon+Westerterp, Utrecht / Amsterdam
  • Berenschot, Utrecht
  • BLIX, Utrecht
  • Chemtura Netherlands B.V., Amsterdam
  • Cindu chemicals B.V., Uithoorn
  • Cosun, Roosendaal
  • CP Kelco, Nijmegen
  • Delamine, Delfzijl
  • DIFFER, Eindhoven
  • Dishman Netherlands, Veenendaal
  • DMV International, Veghel
  • DOW Chemical, Terneuzen
  • DSM Special Products, Rotterdam Botlek
  • ECN BU Energy Efficiency in de Industrie, Petten
  • ECN BU Biomassa, Kolen en Milieuonderzoek, Petten
  • EIRES, Eindhoven
  • Energy Matters, Driebergen/Zeist
  • Flowid, Eindhoven
  • Fujifilm, Tilburg
  • Galvano, Hengelo
  • Huntsman, Botlek
  • Impact, Enschede
  • Institute for Sustainable Process Technology, A’foort
  • Kemira Chemicals B.V., Tiel
  • Koch Raffinaderij, Rozenburg
  • Kollo Silicon Carbide, Farmsum
  • Linde, IJmuiden
  • Lubrizol, Delfzijl
  • Lubrizol, Brecksville, Ohio, USA
  • LyondellBasell, Botlek
  • LyondellBasell, Maasvlakte
  • Meneba, Weert
  • Momentive, Pernis
  • NedMag, Veendam
  • Neville Chemicals, Uithoorn
  • Norit, Klazienaveen
  • Nouryon, Amersfoort
  • Nouryon, Delfzijl
  • Nouryon, Herkenbosch
  • Nouryon, Morris, USA
  • Nouryon, Mons, Belgium
  • Oostendorp Apparatenbouw B.V., Tiel
  • Plasticon Europe B.V., Oldenzaal
  • PQ Europe, Winschoten
  • Private Equity Investors
  • Rijksdienst voor Ondernemend Nederland, Utrecht
  • Rosier, Sas van Gent
  • Sabic Innovative Plastics, Bergen op Zoom
  • Smit & zoon, Amersfoort
  • Smit & Zoon, Weesp
  • Solar Nederland B.V., Alkmaar
  • Stichting Agro Keten Kennis, ‘s Hertogenbosch
  • Stichting Keten Efficiency, Nuenen
  • Shell Nederland Chemie, Moerdijk
  • Shin-Etsu PVC B.V.
  • Shin-Etsu VC B.V.
  • TKI New Gas, NL
  • TMC Chemical, Eindhoven
  • TNO Business Unit Oil & Gas, Apeldoorn/Delft
  • Undisclosed Oil Multinational, London
  • Undisclosed Pharmaceutical Company, Europe
  • Unimills, Zwijndrecht
  • United Oil Products, Des Plaines, Illinois, USA
  • Universiteit Twente
  • VitalFluid, Eindhoven
  • VNCI, Leidschendam
  • Voyex H2 carrier, Delft
  • ZLTO, ‘s Hertogenbosch
  • European Congress on Chemical Engineering (ECCE); 2017, 2019, 2023, Barcelona, Florence, Berlin
  • World Congress on Chemical Engineering (WCCE); 2017, 2023, Barcelona, Berlin
  • ACHEMA Inspiring Sustainable Connections; 2012, 2015, 2018, 2022, Frankfurt
  • Sustainable Process Intensification Network (SPIN-NL); 1998 – 2023
  • Netherlands Group of Users of Technology for Separation (NLGUTS); 1993 – 2017
  • Dutch Membrane Association (NMG); 2010 – 2023
  • Royal Institute of Dutch Engineers (KIVI); 1986 – 2023
  • Royal Flemish Association of Engineers (KVIV); 1986 – 2023
  • Eindhoven Institute for Renewable Energy Systems (EIRES); 2020 – 2023
  • Dutch Institute For Fundamental Energy Research (DIFFER); 2015 – 2023
  • Rotterdam Harbour Industrial Network Organisation (Deltalinqs) ; 2000 – 2023



Phone / Email

Phone: (+31) 348 – 42 44 62

Mobile: (+31) 6 – 41 23 76 95

Mailing Address

Adenauerlaan 17

3446 HS Woerden

The Netherlands

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