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Ventolines is an experienced and ambitious service provider

Our professionals provide solutions to your challenges and increase the pace of renewable energy projects throughout each project stage

Our story

Anne and Jelma de Groot grew up at an agricultural farm in the Noordoostpolder, and were surrounded by wind energy from a young age.

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Our specialists

Anne de Groot

Owner of Ventolines and all-round renewable energy specialist

I am driven by extraordinary projects, such as the Westermeerwind project. The realization of Westermeerwind Wind Farm is our crowning achievement. There are plenty of challenges in the renewable energy industry, which motivate and encourage me to take projects to another level. To me, the process is just as important as the result. To be able to do this with a team of ambitious renewable energy specialists gives me energy and inspiration every day.

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Allard van der Steege

Development Director

In 2014, after 20 years in the wind energy industry, I joined Ventolines as Development Director. Several hurdles need to be taken during the development phase of a project. Success is only certain once the final hurdle has been taken. After 20 years developing renewable energy projects, the work is still fascinating. Helping projects reach the finish line is an incredible feeling!

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Bart Ummels

Project Manager

For me, Ventolines is the company when you want to work on large Dutch renewable energy projects. It is an inspiring environment of professionals, I have freedom and responsibility in my job and I work with great colleagues. As a technical project manager, I help clients take their plan from vision to reality. I always keep in mind: the technical design determines the possibilities, but the possibilities also determine the technical design.

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Tonny Kroes

Asset manager

I know how a service provider thinks and speak their language. This helps me represent the interests of owners more effectively. As an asset manager at Ventolines, I am closely involved in the development and construction phases of a project. This enables me to optimize a project during the early stages.

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Ries Velema

Project manager

Managing a project is not only managing the technical process, but also managing the surrounding area. As such, I am not a contract manager, but a contact manager. I deal with many different stakeholders, such as authorities, contractors and local residents. The only way to be successful is by identifying yourself with their position. Ventolines offers me an excellent knowledge base and expertise throughout all project phases.

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Casper Sparreboom

Manager Project Finance

Renewable energy projects are realised through collaboration between all disciplines, each with their own uniwue character and aspects. Ventolines has all the competences in-house to realise succesful projects. Finance is for me the ideal place where all disciplines meet; all pieces of the puzzle fall together at the finance stage. Financial analysis and strategies form the basis of a project. Together with clients and my colleagues we work towards an optimal result; that’s what drives me!

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Anna Ritzen

Project Manager

After 10 years as a consultant in the renewable energy industry I have chosen to work for a company that realises projects. I am still amazed when a wid projects is commissioned and starts generation clean, green electricity. Together with our great team of experienced specialists it is my duty to achieve optimal completion of wind projects. The dynamic process with a wide variety of stakeholders asks for perseverance which is what drives me in my job.

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Hendrik Kinderman

Project Developer

Complex challenges are an important driver for me. The development of wind and solar projects brings many challlenges which all need to be addressed to achieve an optimal result for our clients. I was raised on a farm and many of our clients and landowners are farmers. Because of this background I understand very well what our clients and landowners would like to achieve and what drives them. Ventolines brings together all discplines in a project to come to an optimal result. I am proud to be part of that.

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Hein Pijnappel

Development Manager

The development of renewable energy projects is still a challenge in a mature but ever changing market. Local and regional governments are taking the lead in projects and local groups are starting their own projects. Ventolines is working together with these groups and other clients and in close liaison with them, we guide the projects through the various stages of development, completion and operations. I cannot think of a better place than Ventolines to do this. Renewable energy is in our NDA.

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Paul Geluk

Manager Project Finance

Ventolines combines the renewable energy industry, the company itself and my job role in the best way possible. I very much enjoy working here because of the great challenges and social responsibility of our work. Ventolines is big enough to have colleagues to learn from and small enough to make a direct impact and to get to know my colleagues extensively. The flexibility in my work leads to a good work life balance and allows me to run side projects. Structuring and managing project finance asks for analytical and organisational skills which makes my work a great challenge every day!

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Mark van Rij

Business Development – Solar and Wind

After 12 years developing, building and operating large scale wind and solar projects in the UK and Australia, I returned to The Netherlands to work on renewable energy projects in this challenging market. The choice to work for Ventolines was an easy one; the combination of development, construction and operation of renewable projects offers many opportunities. With my colleagues we build a relationship of trust with our clients in order to achieve the optimal results. With many years to come, I work with great enthusiasm for our clients.

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Thibaut de Groen

Challenging and dynamic projects give me energy. I find this at Ventolines. The renewable energy market is ever changing and so are the wishes of our clients. It is great to work with my colleagues to facilitate these changing demands and to be flexible to cater for them. Real team work; real results!

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Maarten Swets

Deputy Asset Manager

Since I was a child I was interested in energy generation and systems. After many years working in hydro as well as conventional electricity generation, my focus is now solely on renewable energy generation in The Netherlands. As Asset manager I work with a team of enthusiastic colleagues and service providers to optimise asset management. Every day offers a challenge to maximise electricity generation and bring down the costs.

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Thijs Afman

Project Manager

I have worked in the wind energy industry since 2011; first as a sales engineer and manager at a large German turbine manufacturer, completing complex supply contracts with international utilities and developers. Following this, I started to focus on the entrenchment of technical aspects in contracts in a more focussed way and with this in mind I joined Ventolines in 2016. As a contract manager, and now as a project manager, my focus is to support our clients and clients‘ contracting during the transition from development to construciton and completion.

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Elisabetta Aarts

General Counsel Ventolines

A longtime energy partner in a Dutch top law firm I was given the opportunity to join Ventolines as general counsel at the beginning of 2017. For me Ventolines represents a perfect combination of entrepreneurship, vision, enthusiasm and focus on talent and quality, guaranteeing its position at the forefront of the energy transition process. In addition to the work that comes with being a general counsel, I manage the legal team. Being an integral part of our expert teams, the legal team is uniquely positioned to support projects and provide legal solutions for cooperation structures, participation and financing in renewable energy projects.

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Daan Houf

Project Developer

There are many aspects affecting renewable energy project development, construction and operations. We work on the most complex and multidisciplinary projects which is exciting. As a developer I work with my colleagues, project owners and other stakeholders to make projects happen. My colleagues are I are passionate about renewable energy and we work together to produce the most optimal result for our clients.