Our Team

Each of Climate Transition Capital’s leaders has over thirty years of investment experience in the energy sector and an impressive track record in building early movers into industry leaders. They are proven innovators that have catalysed new markets and asset classes, including launching the world’s first offshore wind fund, creating the models for power purchase agreements and energy-storage-as-service agreements and the first climate yieldcos.

The Climate Transition Capital team includes a further five individuals with a collective 80 years of professional experience. These individuals have dedicated the majority of their careers to date to climate finance, across investment banking, investment management, finance, legal and investor relations.


Shaun Kingsbury CBE

Shaun Kingsbury CBE is Chairman of CNG Fuels, the leading provider in the United Kingdom of biomethane for heavy goods vehicle transport. Additionally, Shaun is Chairman of Renewable Power Capital, a company established by CPPIB to develop, build and operate wind and solar assets across Europe. He also serves as Chief Investment Officer and was a Founding Partner of Just Climate, a fund established to address the net zero climate challenge at scale.

Shaun was the first CEO of the UK Green Investment Bank plc (GIB), the world’s first low carbon investment bank. Shaun established the bank in 2012 with the backing of the UK Government and it quickly became the leading investor in renewable energy in the UK, financing over £12 billion of clean energy projects.



David Buzby has over 30 years of business experience in sustainability, renewable energy, and technology, including forming several billion-dollar public companies in the sustainability industry as well as raising $1.5 billion of co-investment from institutional investors over a period of 30 years.

David is chair of the board of Stem, Inc. (NYSE:STEM), where he was a founding investor and has served as a director since 2010. Stem is a leading energy storage/grid services company in North America, which has completed a de-SPAC merger with Star Peak Energy Transition Corp. (NYSE:STPK) and is valued at approximately $4.4 billion on a combined basis as of 18 June 2021. David is also on the board of directors of Spring Valley Acquisition Corp. II, a sustainability SPAC that filed on 16 February 2021 with the SEC to raise up to $200 million in an initial public offering and plans to list on the Nasdaq under the symbol SVIIU. David also serves on the board of Leading Edge Equipment Technologies, Inc. a privately held company in the US developing solar wafers. David has also served on the investment committee of PRIME Coalition, a venture capital company, since 2016 and served as a Director of Cambrian Innovation, Inc., a wastewater treatment company, from 2016 to 2020.


Robin Duggan

Robin is an experienced private equity investor and business leader with a strong track record in business transformation and value creation in the energy transition.

From 2007 to 2019, Robin was a senior member of the Riverstone Renewable Energy investment team which raised and invested over $5 billion of equity for the RAEII Fund and associated coinvestments, joining Riverstone alongside Lord Browne to set up the London office. Robin served on deal teams and Boards including Seajacks, Enviva, Pattern II and Velocita as part of an investment strategy focused on cost competitive grid scale renewable energy generation and the associated supply chains with innovative, value creating exits. Those deal teams also launched the first US clean energy Master Limited Partnership (Enviva) and Robin led the first clean energy exit to a Japanese investment house (Seajacks) and a Chinese OEM (Velocita).



Joris Rademakers


Joris Rademakers has over ten years of experience in clean energy as a finance and investment professional, with experience across corporate governance, private equity, due diligence, investments, divestments, M&A, and both corporate and project finance. Joris has been involved in creating, scaling-up and subsequently selling two renewable energy platforms and a flexible generation business.


Alex Zhang


Alex Zhang is an Investment Manager at Climate Transition Capital. She has over nine years of work experience in sustainability and renewable energy, with experience across M&A advisory, fundraising, infrastructure investment, asset management, and start-up.


Fraser Welham


Fraser is an international CFO with extensive board-level experience in publicly listed and private equity businesses and has more than 30 years industry focus on renewable energy, waste and environmental management.  

Prior to joining Climate Transition Capital, Fraser was CFO at AIM listed Invinity Energy Systems (formerly redT energy) where he recently completed an RTO and re-listing, creating the leading supplier of vanadium redox flow batteries, an emerging technology ideal for large scale energy storage.


Alanna Flett


Alanna was previously Corporate Counsel at Forsa Energy (a Riverstone portfolio company), where she was responsible for the legal aspects of the group’s corporate and M&A activities, compliance and corporate governance function. Alanna’s responsibilities included managing Forsa’s divestment of its onshore wind business and supporting the divestment of its pumped hydro storage business.


Alex Murray

Investor Relations

Alex Murray has over twenty years of experience in the financial services industry, spanning consultancy, investment banking, private equity fund selection and private equity fundraising.

He has spent the last twelve years raising capital for sustainability and impact-themed PE and infrastructure funds from both public and private sectors investors, mobilising over one billion pounds of sustainable development finance.  For the last five years Alex has been managing Conviction Capital, a boutique placement agent he established, advising SDG-aligned fund managers worldwide.



David Crane

David Crane is a prominent energy industry executive, both in the traditional and the clean energy sectors and a long-term climate advocate committed to leading the energy industry’s transition to clean energy. David carries with him 13 years of aggregate experience as CEO of three publicly traded energy companies, International Power plc (IPR), NRG Energy, Inc. (NRG), and NRG Yield Inc. (now Clearway Energy Inc., or Clearway Energy), and over 30 years of experience in the energy sector. David is currently Chief Executive Officer of two climate-focused SPACs which trade on the New York Stock Exchange: Climate Change Crisis Real Impact I Acquisition Corporation and Climate Real Impact Solutions II Acquisition Corporation.



Marieke Bax

Marieke has over ten years of experience as a non-executive and twenty years of international executive experience across a broad range of sectors and companies. She has a broad interest in sustainability, health, technology and entrepreneurship and is regarded as an expert in corporate governance and a champion of board diversity.

Currently Marieke serves as a non-executive director and chair of the audit committee of InPost (AEX: INPST) an e-commerce logistics firm with a market capitalisation of €7.7 billion, which is pioneering sustainable parcel delivery solutions that can reduce carbon dioxide emissions by up to 95%.


David Tuohy

David has nearly 30 years of international experience in cleantech, energy and telecoms, latterly in executive leadership roles and board positions with private equity-backed companies. David has devoted a significant portion of his career to leading business transformation and growth driven by disruptive technology and regulatory reform. 

Currently, David serves as CEO of Connecthing International, a technology-enabled company that operates the leading energy switching platforms for TPIs in the Netherlands and Germany, where he is executing a growth strategy based on international expansion through M&A and digital transformation.


Lisa McDermott

Lisa has over twenty years of experience as a banker and lawyer in the UK and the Netherlands, latterly specialising in the energy transition.


Lisa has spent the last seven years as an executive director in the project finance team at ABN AMRO in Amsterdam, where she leads the bank’s European energy transition project financing activities.   In this role she has spearheaded the build-out of the bank’s renewable energy portfolio to comprise a significant large offshore wind portfolio, onshore wind, solar, energy from waste, geothermal and hydro technologies. She has also led the bank’s push into subsidy-free renewable financing backed by corporate PPAs, expanding from NW Europe into the Nordics and Southern Europe. Currently, Lisa is particularly focused on emerging technologies such as green hydrogen, CCUS, next-generation biofuels, batteries/EV charging, floating wind and floating solar.