Meet Us

Dr Gabriel Gallagher BEng PhD CEng FIMechE FEI – Managing Director

Gabriel is a Chartered Engineer with 20 years detailed knowledge and practical application of engineering, commercial and research roles in the low carbon and decentralised energy sector. Gabriel has a comprehensive background beginning with a Mechanical Engineering Apprenticeship with the MoD, going on to study Engineering at Cardiff University, working as Researcher of combustion and biomass fuels at the International Flame Research Foundation in the Netherlands and returning to Cardiff to study for his PhD in Heat Transfer and fluid Dynamics before founding Sustainable Energy Ltd. Gabriel has acted as principal consultant for the design and implementation of over 100MW of installed low carbon district heating projects and over 50MWe of renewable power projects. Gabriel is a Fellow of the Institute of Mechanical Engineers and the Energy Institute and a Chartered Member of CIBSE.

Chrissy Woodman BEng PgC IMAPS AAT – Director

Chrissy has been with Sustainable Energy since 2002 and has held key delivery roles for the implementation of over 200 renewable heating projects including tendering, procurement, contract administration and Principal Designer. Chrissy has an indepth knowledge of the Renewable Heat Incentive, Renewable Obligation, CHPQA and has managed the accreditation of over 100 projects equating to over 30MW of biomass, solar thermal and biogas. Chrissy's project implementation experience is integral to Sustainable Energy’s project delivery services. Chrissy has written business case submissions to secure over £5M of funding for district heating networks and acted as project manager for design and implementation of numerous heating schemes. She also gained planning approval for large installations and advises on permitting and licensing. She is an Incorporated Member of the Association for Project Safety.

Lee Evans BSc (Hons) MSc CEnv MIEMA – Operations Director

Over the last 15 years, Lee has overseen the delivery of numerous carbon management, renewable and district energy projects for multinational businesses, local authorities, government organisations, NHS Trusts and universities. Lee has in depth knowledge of masterplanning and feasibility for district heating schemes and has managed many large consultancy projects to a value of over £3M. He joined Sustainable Energy from The Carbon Trust where he oversaw feasibility and design projects resulting in the identification of over £5M of energy savings and secured over £10M of project funding for low carbon projects. Lee is a Chartered Environmentalist and has delivered presentations and lectures to many diverse audiences including CIBSE, BIFM, MSc and MBS students at Cardiff University and Bangor University.

Paul Woods MA MSc CEng FEI FIMechE FCIBSE – Associate

Paul is a Chartered Mechanical and Energy Engineer specialising in district heating, CHP and sustainable energy for buildings. As Technical Director for two major consultancies he oversaw the design and construction of many CHP and district energy projects. He has also provided advice to Government both on the potential for district heating in the UK and on the implementation of the Energy Performance of Buildings Directive. More recently he has held senior roles within ENGIE, responsible for the strategic development of their six major district energy schemes and for the operation and development of the Queen Elizabeth Olympic Park and ExCel London district heating and cooling companies. Paul is also well known for his work as author of key industry guidance including CIBSE’s AM12 - CHP for Buildings and the ADE/CIBSE CP1 - Code of Practice for Heat Networks.

Omied Khakshour BEng (Hons) MSc CEng DipNDEA MIMechE – Senior Mechanical Engineer

Omied is a Chartered Mechanical Engineer and was one of the first certified CIBSE Heat Networks Consultants (HNC 195099). He is an experienced engineering design consultant having worked on over 100 renewable heat projects from concept design through to commissioning and handover. Omied's work on Sustainable Energy’s engineering designs includes modelling site energy demands, hydraulic modelling, specification of plant items and the development of schematics and full detail design packages. He has been clients engineer during construction and handover phases to ensure that Sustainable Energy's designs are implemented according to project specification. Omied has developed a number of energy modelling and sizing tools and is responsible for their ongoing development. As a Non-Domestic Energy Assessor (Level 3 and 4), he makes key contributions to low carbon consulting services.

Dr Penny Challans BEng (Hons) MSc PhD CEng MIMechE – Senior Consultant

Penny is a Chartered Mechanical Engineer and a qualified CIBSE Heat Network Consultant with a PhD that focused on pyrolosis and gasification for EfW and biomass. Penny has extensive knowledge in the technical and financial assessment of Energy from Waste (EfW) and biomass schemes and her skills and experience are key to Sustainable Energy's masterplanning, feasibility and techno-economic modelling services. She has provided important contributions to a number of BEIS Heat Network Delivery Unit projects including complex energy demand modelling, identification of generation options, technical and financial modelling and detailed reporting.

Mari Roberts MEng (1st Class Hons) – Consultant

Mari is experienced in the delivery of district energy assessments and detailed feasibility studies and received first class honours in her integrated masters degree (MEng) in Chemical Engineering at Manchester University. Her experience includes technical report writing, assessment of large data sets, detailed heat demand and energy network modelling, techno-economic modelling and risk and benefit assessment. She delivered numerous energy mapping and feasibility projects and CO2e reduction assessments for local authorities, large companies and developers.

Ian Hegarty BEng – Senior Project Manager

Ian is a highly experienced and versatile Mechanical Engineer with a broad experience of designing, installing and commissioning large scale biomass, natural gas and renewable energy projects. Ian has a vast knowledge and practical experience of setting to work, commissioning, diagnostics and testing for complex systems including PLC programming and SCADA systems. Ian has experience of working with local authorities, district heating and energy infrastructure, industrial and large scale commercial heating systems, housing developers, housing associations, renewable energy, natural gas systems and transport refrigeration. Ian holds qualifications such as:- IOSH – Managing safely; Professional certificate of competency in PLC and SCADA; Niagara / Tridium controls competency certificate; OSS controls certification; Electrical competency, motor principles and safe panel entry certifications

Peter Martindale BEng (Hons) – Project Engineer

Pete is an experienced project engineer with a detailed technical understanding of low carbon heat networks, district energy and renewable energy technologies. Pete has made key contributions to delivery of Sustainable Energy's technical and financial feasibility assessments and energy masterplanning projects, including conducting over fifty technical site surveys, modelling of complex energy demands and network heat losses and developing feasibility reports. Pete also undertakes ongoing improvement and development of bespoke in-house modelling software tools.

Nikolaos Papadimitriou BEng MSc – Project Engineer

Nikos is a mechanical engineer with a wide knowledge of district heating and cooling systems and achieved an MSc in Energy Systems (with merit) from the University of Strathclyde. Previously a design engineer for a private sector heat network installer, he worked on large district heating schemes (including Kings Cross) and holds several years’ experience in the building services sector. He is experienced in the delivery of district energy system designs, procurement exercises, client engineer roles and working with developers and contractors.

Rhys Jones-Mathias BEng (Hons) – Project Engineer

Rhys is a mechanical engineer with a broad experience of renewable heating and district energy networks. Rhys has made key contributions to the delivery of Sustainable Energy's feasibility assessments, energy masterplanning and construction projects, including energy modelling, hydraulic modelling, development of schematic drawings and assisting with RHI applications and heat meter reporting.

Adrien Grubb MEng (Hons) Mechanical Engineering – Consultant

Adrien has a Masters Mechanical Engineering Degree and works as a project engineer assisting with the delivery of Sustainable Energy’s district energy consulting activities. He holds robust knowledge of district energy networks and low carbon and renewable technologies. Adrien is an expert user of MS Excel and has developed several highly complex and detailed spreadsheet based models. Adrien has made key contributions to the delivery of Sustainable Energy's feasibility assessments, energy masterplanning and design projects, including energy modelling, techno-economic modelling and the development of schematic drawings.

Rhys Sully MEng (Hons) – Project Engineer

Rhys is a project engineer assisting with the delivery of Sustainable Energy’s district energy consulting activities. He holds wide knowledge of district energy networks and low carbon and renewable technologies. Rhys has made key contributions to the delivery of masterplanning, feasibility and design projects. Areas of expertise include heat demand assessment, technical modelling and the development of schematic drawings.

Denise Seager – Office Manager

Denise manages the administrative activities of Sustainable Energy including accounts receivable and payable, project costing and office management.

Rocky Jones – Morale Officer

Rocky the greyhound joined in 2018. In his previous role as a professional sprinter he developed a strong drive and focus which he now brings to his role as staff morale officer at Sustainable Energy. Rocky has been present at many important meetings about feasibility, master planning, technical design and implementation of low carbon energy projects. Rocky’s key strengths include sleeping, stretching, sniffing, leaning and more sleeping.