We are
Specialists in
Innovative
Energy Technologies

Susten manages private investments in companies with innovative energy tech and the potential to become the new energy industry giants.

“We are like tenant farmers chopping down the fence around our house for fuel when we should be using Nature's inexhaustible sources of energy — sun, wind, and tide. ... I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.”

MISSION
To generate exceptional returns for investors by backing leading teams and technologies that reduce cost and accelerate the profitable, widespread deployment of sustainable energy systems. Susten delivers this by:
  • Working with industry partners to understand bottlenecks and pain-points
  • Identifying commercially attractive innovations that promote and enable sustainable energy
  • Actively sourcing early-stage companies with proven solutions, ready to scale
  • Investing in companies with the greatest potential for commercial success
  • Providing value-added support to portfolio companies from investment through exit
We call this approach Positive Energy.
VISION
Ubiquitous Sustainable Energy

We are driven by our Values

[ 01 ]
Passion
We are passionate about our Vision and Mission; this is the primary motivation for everything we do.
[ 02 ]
Pragmatic Persistence
We focus on realistic, practical solutions that have tangible value, rather than idealistic concepts; we critically evaluate all investment opportunities through this lens; we work though difficult challenges but pivot when appropriate.
[ 03 ]
Collaboration
We align ourselves to a common mission and set of objectives; we value team success above individual recognition; we are committed to continuous improvement, as individuals and a team.
[ 04 ]
Integrity
We are intellectually honest with investors, portfolio companies, partners, and ourselves; we set aside personal biases, question assumptions, and are willing to adjust our views; we seek to build trust with all counterparties.
[ 05 ]
Respect
We respect, value, and care for our investors, portfolio companies, partners, and each other; we get tremendous satisfaction from the work we do and how we do it.
[ 06 ]
Excellence
We operate with high standards; we focus on key priorities, meet our commitments, and deliver results.
The Energy sector is transforming, challenges to sustainable living are growing and our team is evolving.
Our values and commitment to our clients remains constant.
NAME
Susten is a contraction of sustainable energy and, by happy coincidence, it is also the name of a lovely pass in central Switzerland.

Susten Management Team

Jim Zuidema
  • Over 25 years in the energy-storage and semiconductor industries.
  • CFO roles at early/growth-stage companies; previously finance director at Intel Corporation.
  • CEO of Nesscap Energy; built enterprise value then led the company through a successful M&A exit.
  • Skilled at guiding companies through start-up, growth, and exit phases, with hands-on experience in strategy, operation scaling, and business transactions.
  • MBA and BS in Engineering from Cornell University.
  • Committed to driving practical outcomes, focusing on innovative technologies with tangible impacts and real-world viability.

CHRYS VAKLA
  • Skilled in finding and creating business opportunities and partnerships;
  • 20 years in Banking. Senior roles in Credit Suisse and Royal Bank of Canada;
  • Experienced in developing strategy and teams;
  • Experienced Board member actively working with Management to help them grow. Board positions include an energy tech firm, a chemical company, an angel investor club in tech start ups, and others;
  • She is passionate about being part of the growth story of talented Management teams.

JOHN MARROW
  • 35 years of experience in strategy consulting, VCPE, fund management and advisory, and start-ups – across energy, technology, environment and sustainability;
  • Experienced company builder, as founder, manager and investor – taken companies to both IPO and trade sale;
  • Built extensive investment experience in start-ups using technology and innovation to accelerate the transition to a low-carbon future. Invested in over 30 start-ups companies;
  • Experienced non-executive director and board-level adviser – providing governance, strategic input and support for scaling;
  • Ex-Big 4 and bp Ventures;
  • Former expert panellist on the Global Cleantech 100;
  • Enjoys working on the big problems that deep science-based technologies aim to solve.

PASCALE LEBAILLIF
  • 20+ years in Investment Banking and Asset Management; JPMorgan Asset Management, Credit Suisse, Morgan Stanley, Credit Agricole CIB, combining structuring, strategic, contractual and operational experience.
  • Expanded and developed derivatives and capital market businesses across Europe, Emerging Markets, Middle-East and the US.
  • Track record of developing new businesses and delivering multi-million $ growth, as well as driving global implementation of complex legal, regulatory and tech projects.
  • Renowned ability to identify and implement innovative solutions whilst promoting a strong risk and control environment.

DAVID HERNE
  • Founder of investment management company Halcyon (2003) which managed approx. USD 1 billion in emerging market securities. David left Halcyon in 2022 to join Susten;
  • Previously held senior roles at Brunswick Capital Management, Unifund, Credit Suisse, Boston Consulting Group;
  • Holds a BA from Harvard University;
  • Lived in Los Angeles, Shanghai, Boston, Moscow, London and Andermatt;
  • Love mountains, the ocean, physical activity, intellectual excitement!

ROLF HELBLING
  • A co-founder of Carnot Capital, (Carnot Efficient Energy Fund generated 215% since inception in 2009); • Previously led the Industry and Telecom Research team of BZ Bank;
  • Also worked in the private equity team of Bank Vontobel and corporate banking in Citibank in Zurich and New York;
  • Graduated in economics from the University of St Gallen.

NINA BUDAZHAPOVA
  • Lead researcher based in Cambridge;
  • Previously worked at PwC - advised large companies on sustainability strategy, roadmaps, ESG metrics and reporting;
  • A Chevening Fellow of the UK government;
  • Holds MA in Environmental Technology from Imperial College London;
  • Intellectual volunteer for the Lake Baikal Foundation.