Energy Transition investment

Ben has been Managing Director and Head of the Gresham House Energy Transition division since November 2017.

He is the Fund Manager of Gresham House Energy Storage Fund plc and was, through 2020, also Fund Manager for the British Strategic Investment Fund (BSIF) strategy which grew AUM to £350mn under his leadership.

Ben started his fund management career at Lazard Asset Management in 1994 and worked there for nine years. He later founded Hazel Capital in April 2007, serving as Managing Partner and CIO and which became Gresham House Energy Transition on the acquisition of Hazel Capital’s business activities in November 2017.

Prior to founding Hazel Capital, he was a co-founder of Cantillon Capital, where he managed a US$1bn equity hedge fund focused on global technology, media and telecom.

Ben currently serves as a director of over 50, mostly project, companies.

He has 27 years of investment experience and holds a BEng in Mechanical Engineering from Imperial College.

Filinto is Managing Director of Gresham House’s Energy Transition division since April 2025. He is also the Fund Manager for Gresham House Global Energy Storage Fund.

Prior to Gresham House, Filinto was the Managing Director of Sonnet, iCON Infrastructure’s Iberian investment platform, which focused on energy and infrastructure. Before, Filinto was Managing Director and Head of NextPower III, a global renewables investment fund, at NextEnergy Capital.

With almost 20 years of experience in energy transition, Filinto held several senior management, business development, asset management, and investment positions with cross-sector and international exposure in markets such as Europe, North America, Latam, and India.

Filinto holds a Master in Finance degree (Catolica-Lisbon School of Business and Economics) and a Bachelor’s in Management (Moderna University).

Rupert has been the Managing Director of Gresham House Asset Management Ltd since September 2015. He is a member of the Group Management and Investment Committees.

Rupert has a proven track record of delivering significant value to shareholders and has over 32 years’ experience in asset management, private banking and wealth management, focusing on product innovation, investment management, business development, banking and wealth structuring.

Before joining Gresham House, Rupert was CEO and CIO of Schroders (UK) Private Bank for 11 years, and spent 17 years at Rothschild, where latterly he was Head of Private Clients for Rothschild Asset Management.

Wayne is an Investment Director in our Energy Transition division and has 29 years of technical, commercial, stakeholder and general management experience in the energy sector.

Before joining Gresham House, Wayne served as COO at FIM Services Ltd, and prior to that Wayne was an Onshore Wind Development and Construction Director for RWE Innogy.

He has overseen the construction of 17 wind farms (~400MW) and the sale of 12 wind farms (~200MW) over the past 12 years. He has also represented the industry on aviation matters as a director and vice chair of the Aviation Investment Fund Company Ltd.

Wayne is a Chartered Engineer and has a PhD in Engineering from the University of Sheffield. Wayne is also a registered adviser with the Financial Conduct Authority.

Lefteris joined Gresham House in March 2023 and is responsible for sourcing and executing energy storage investment opportunities.

Lefteris has over 15 years of experience in infrastructure and energy transition investments. He has held principal investment and advisory roles with large institutions such as Columbia Threadneedle Investments, National Pension Service of South Korea (NPS), Macquarie, and Société Générale, as well as corporate and business development roles with Libra Group and Maple Power.

He is a seasoned investor who has worked across a range of sectors including solar PV, onshore and offshore wind, anaerobic digestion, and hydroelectric power.

Lefteris holds a MSc in Finance from Imperial College London and a BSc in Management Science from Athens University of Economics and Business.

Matt joined Gresham House in September 2025 as a Project Manager in the Energy Transition team, working on the construction of the Carno III Wind Farm.

Prior to joining Gresham House, Matt worked in the wind sector from December 2023, acting as an Owner’s Engineer and consulting on a range of onshore wind projects through development, construction and repowering.

Matt holds a Master’s degree in Mechanical Engineering from the University of Bristol and is a CFA Level I holder.

James joined Gresham House in May 2018, following the acquisition of FIM Services Ltd.

James is Fund Manager of Gresham House Solar Distribution LLP. James takes an active role in the day-to-day management of the fund including reporting, asset management, capital rising, acquisition of new assets and conducting valuations. Prior to joining Gresham House, he worked at J.P. Morgan, RWE Supply and Trading and latterly at Computershare Investor Services as an Equity Dealer, managing a range of global share plans and option schemes on behalf of corporate clients.

James has over ten years of experience in financial services and holds a BA (Hons) in Business Administration from the University of Plymouth. He has also obtained the Investment Management Certificate and is enrolled as a Level II candidate in the CFA program.

Stephanie joined Gresham House’s Energy Transition division as part of the Commercial Asset Management team in August 2025, having previously completed an internship.

Prior to joining Gresham House, Stephanie worked at LCP Delta, writing market reports and advising leading industry players on commercial strategy across various energy transition sectors, including EV charging infrastructure, solar and battery storage. She also gained experience at Circulor, a cleantech start-up, as part of the Product team, where she focused on developing the SaaS platform providing a supply chain traceability solution for materials in renewable energy technologies.

Stephanie holds a Master’s degree in Climate Change, Management and Finance from Imperial College Business School and a Bachelor’s degree in Philosophy, Politics and Economics from King’s College London.

Based in our Oxford office, Suzy works in the asset management team for our renewables portfolio. Suzy has been involved in the construction, financing and operational management of over 100 MW of onshore wind and solar assets on behalf of investors.

Previously, Suzy worked as a Senior Investment Analyst for Sun Life Financial of Canada and Lincoln Financial Group.

Suzy holds a first-class BSc (Hons) in Mathematics and Statistics from the University of Bath.

James is an Associate Director at Gresham House. James moved to the Energy Transition team in 2019 after joining Gresham House in 2018 as part of Gresham House Ventures, having previously been at Livingbridge since 2016.

James is the Assistant Fund Manager for Gresham House Energy Storage Fund plc.

He is an experienced financial modeller and investment professional and his current role covers a broad range of work across fund management and new investments, primarily focused on energy storage and renewables. Prior to joining the Energy Transition team, he worked as an Analyst covering mostly early-stage companies in the Venture Capital and Equity Fund vehicles as part of Gresham House Ventures. This role provided experience with investment decisions across a variety of markets as well as exposure to growth companies and management of quoted investment vehicles.

His career started in TMT audit at EY where he spent three years and qualified as a chartered accountant.

James holds a first-class Master’s degree in Mathematics from Durham University.

Fernando joined Gresham House in May 2021 and is focused on the design, development and deployment of processes and procedures that allow the Energy Transition team to increase MW under management each year.

Fernando has 15 years’ experience in the Renewable Energy sector, specifically in the Solar PV industry. Prior to Gresham House, he was Global Head of Technical for a 2.2GW Solar PV portfolio at WiseEnergy (Next Energy Group company), focused on the operation of their Solar PV assets and increasing overall revenues.

Fernando holds a BEng in Industrial Engineering from the University of Castilla-La Mancha and an MSc in Energy and Sustainability with Electrical Power Engineering from the University of Southampton. He also holds a Global Executive MBA from IESE Business School, Barcelona.

Hugo joined Gresham House’s Energy Transition Investment team following several years working in renewable energy development.

Hugo is pursuing a CFA accreditation and has passed his level 1 exam, scoring above the 90^th percentile of candidates.

Hugo holds a first in Civil Engineering from the University of Exeter.

Ellen joined Gresham House in January 2025 and supports the execution of energy storage investment opportunities.

Ellen has four years experience in M&A, structured finance, and project finance advisory for renewable energy assets and companies in both North America and Europe. Ellen’s c.$500M of transaction experience spans residential and utility scale solar, co-located and standalone storage, as well as wind.

 Ellen holds a Bachelor of Science in Education and Social Policy from Northwestern University, with dual majors in Environmental Science and Human Development. Upon graduating, Ellen received a Fulbright research fellowship to study stakeholder engagement with renewable energy systems on the islands of Tilos and Sifnos in Greece.

Carole oversees Gresham House’s renewable assets portfolio and acts as Fund Manager for one of the wind funds.

Carole joined Gresham House as part of the FIM Services Ltd integration, and has been involved in the origination, financing, construction and management of all of the previously FIM-branded renewable assets.

Prior to joining FIM, Carole worked across several sectors including technology, software and travel as a Finance and Operations Director following qualification as a Chartered Management Accountant.

Annelies joined Gresham House in September 2023 as the Senior Commercial Asset Manager in the New Energy division where she looks after the commercial aspects of the operational battery fleet.

She previously spent three years at Statkraft, responsible for the Dutch solar asset fleet. Prior to that, Annelies worked for a private firm looking to develop a CCGT project in the UK..

Annelies holds a BSc from the University of Leuven (Belgium) and did a MSc in Finance (UK/France).

Harry joined Gresham House in April 2023.

Prior to joining Gresham House Harry worked as an Auditor at Grant Thornton for three years focussing primarily on technology and media businesses.

Harry holds a first-class Master’s degree in Chemistry from the University of Oxford and qualified as a chartered accountant in September 2022.

Chloe joined Gresham House in July 2019, having spent over three years in infrastructure operations at Oxford Capital.

Prior to Oxford Capital, she was Acquisitions Manager at Inazin and a Project Officer at TRW, a ZF Group company.

She holds a BSc (Hons) in Zoology from the University of Nottingham and an MBA from RAC, Cirencester.

Owen joined Gresham House in October 2024 as a Project Development Manager. He is responsible for ensuring our portfolio of storage and renewable projects in development are at an excellent standard, ready for investment and construction.

Prior to Gresham House, Owen worked as a Project Manager at EDF Renewables where he was responsible for the development of standalone BESS and PV/BESS hybrid projects in GB. Before this, he worked as an Energy Storage Analyst at ib Vogt GmbH developing an origination pipeline of BESS projects across 7 global markets. With over three years of experience in the energy storage sector, Owen has a strong understanding of end-to-end project development and what it takes to produce high-quality renewable infrastructure investments. 

Owen holds a BEng in Mechanical Engineering from the University of Birmingham and an MSc in Sustainable Energy Futures from Imperial College London.

Leah joined the Energy Transition team in September 2025 as a Technical Asset Manager.

She brings over seven years of experience in the operations and maintenance of renewable energy assets, with a particular focus on solar PV. Leah has successfully managed portfolios exceeding 1.2 GW, ensuring efficient performance and long-term value creation.

She holds a BA (Hons) in Geography from the University of Brighton.

Ana joined Gresham House in September 2022 and is responsible for implementing the EPCM structure and delivering the Energy Transition team’s project pipeline.

Ana is a multi-skilled professional with 12 years of experience delivering innovative, award-winning renewable energy projects in the UK.

Previously, Ana helped to establish quality management, project delivery, and commercial project functions at GRIDSERVE Sustainable Energy. She also successfully delivered the UK’s first Electric Forecourt and subsidy-free solar and battery storage hybrid projects with bi-facial panels and tracking technology. Before joining GRIDSERVE, Ana was part of the BELECTRIC projects team building utility-scale solar farms.

Charlie is an Investment Director in the Gresham House Energy Transition team. His current role began in February 2021, following a year in the team as a contractor. He is responsible for executing investments in infrastructure projects such as energy storage systems, whether acquired before construction or when already operational.

Charlie has extensive experience in the development, funding and asset management of distributed energy infrastructure projects assisting both investment managers and project developers at every stage of bringing their projects to fruition. He has worked on projects in a wide range of technologies including solar PV, hydroelectric power, anaerobic digestion, combined heat and power, thermal heat networks, gas peaking and grid-scale battery storage.

He started his career over 20 years ago as a commercial solicitor before transitioning to renewable energy, working with investment management firms for the last nine years.

Charlie studied science of materials at Trinity College Dublin and has an MBA from INSEAD, France.