Drive the transition towards a
Greener, Cleaner
and
Happier World
Empowered by Sum-E
We consult , connect and find your solution for a sustainable world.
Visit us.
Alata
Alice
Open Sans
Noto Sans
Bebas Neue
Great Vibes
Rock Salt
Exo
Belgrano
Overlock
Cinzel
Indie Flower
Staatliches
Roboto Slab
Lato
Noto Serif
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Montserrat
Ubuntu
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Delius
Amiri
Montserrat
Services you can expect:
Strategic Sustainability Consulting
Business development in hydrogen technologies, electrolyser systems, and CO₂ reduction strategies.
Roadmapping to net-zero
Technology & market knowledge
CO₂ reduction and compensation strategies
Organizational Development
Building efficient teams and structures from the ground up; managed multiple teams across different departments.
Identification and evaluation of innovative technologies
Partner scouting and matchmaking
Pilot project coordination
Interim Management & General Management
Experienced in leading entire organizations, including HR, finance (SAP), sales, and operations.
Focused on sustainable growth, even in
turbulent markets.
Sustainability change guidance
(Interim) Liquidation management
We're here to take care of you
Clear Communication, In Your Language
To ensure smooth collaboration and mutual understanding, Sum-E offers professional communication in English, German, and Dutch.
Whether you're based locally or operate internationally, we're here to support you in the language that suits you best.
Recent Reviews
2 juni 2025
I had the honour of working with Edwin for several years during his tenure as General Manager of FEV NL. It was always a pleasure to collaborate with him. Edwin leads with great enthusiasm, positivity, and a genuine care for his team. He is approachable, supportive, and remains closely connected to the people he manages.
As General Manager, Edwin successfully built FEV NL into a strong organization, composed of a capable team with the right competencies to handle complex technical projects. His leadership is grounded in deep professional knowledge, strong interpersonal skills, perseverance, and an infectious enthusiasm that motivates those around him
.Edwin has the ability to strengthen any team or organization. I highly recommend him, and I am confident he will be an invaluable asset to any company or project he joins
Nico Weel
21 mei 2025
I count myself lucky to had the opportunity to work for Edwin when he was the Managing Director at FEV NL and I was reporting to him as Senior Project Manager. Edwin's great communication skills, broad industry knowledge, and strategic thinking make him an exceptional leader. He is friendly and approachable, creating a positive work environment not only for his direct reports but for the entire company. With his experience and knowledge in building a business in the Netherlands, combined with his soft skills, I am convinced that any company he leads will run towards success.
Berk Yiginsu
30 april 2025
With utmost confidence, I wholeheartedly would like to recommend Edwin, who is an exceptional leader. His professionalism, transparency, and proactive attitude distinguish him as a great leader of integrity and vision. He excels in communicating effectively with the entire group, fostering good clarity and coloboration. I've had the pleasure of working under his guidance, and I can attest to his exceptional management skills. He's definitely one of the best managers I've had the privilege of working with throughout my career, and his leadership abilities make him a role model for any organization. I highly recommend Edwin for any top management role.
Akshay Kothari
