Meet Us

Dr Gabriel Gallagher BEng PhD CEng MEI MIMechE MCIBSE – Managing Director

Gabriel is a Chartered Mechanical Engineer and Energy Engineer specialising in heat networks, district heating and renewable energy generation. Gabriel has held the role of Managing Director at Sustainable Energy for over 14 years, and in this time has acted as principal consultant for the design and implementation of over 40MW of installed district heating and has provided key advisory services for over 30MWe of power projects. Gabriel has worked on renewable and low carbon energy projects in the UK, Denmark, Netherlands, Norway, Slovenia, Austria, Kazakhstan, Ireland and Poland. He has delivered consultant training for the Carbon Trust Biomass Heat Accelerator, lectured on District Heating in Practice for CIBSE and IET and developed best practice controls sections for Carbon Trust / CIBSE publications.

Chrissy Woodman BEng PgC IMAPS AAT – Director

Chrissy has been a director of Sustainable Energy since 2010 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 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 14 years, Lee has overseen the delivery of numerous carbon management, renewable and district energy projects for multinational businesses, local authorities, government organisations, NHS Trusts, Universities and DECC Heat Network Delivery Unit. Lee has in depth knowledge of heat mapping, masterplanning and feasibility for district heating schemes and has managed the delivery of many large masterplanning projects for local authorities and public sector organisations. 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 and Bangor Universities.

Omied Khakshour BEng (hons) MSc DipNDEA AMIMechE – Senior Mechanical Engineer

Omied 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 manages key aspects of Sustainable Energy’s engineering design work including modelling site energy demands, hydraulic modelling, specification of plant items and the development of schematics. He also works closely with M&E contractors 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 and is highly competent in the use of SBEM software.

Nathan Hartley BEng (Hons) CEng MIMechE MAPM – Project Manager

Nathan is a Chartered Mechanical Engineer and Professional Project Manager with experience of delivering engineering consultancy services across multiple sectors. He has managed numerous large scale projects (up to £25M in value) through all stages of project lifecycle from initial feasibility assessment and concept design through to implementation and in-service support. Nathan provides implementation support for renewable heating projects such as project planning and management, client liaison and contract administration.

Marc Howell BEng CEng MIET – Senior Project Engineer

Marc is a Chartered Engineer and member of the Institution of Engineering and Technology and has provided key project management and delivery services since 2009. He holds market leading experience in the biomass heating industry, having been involved in biomass project delivery since 1999. His role includes client’s engineer services, contractor liaison and the management and acceptance testing of renewable heat installation projects.

Dr Penny Challans BEng (hons) MSc AMIMechE – Consultant

Penny is an energy and engineering consultant with a PhD focusing on pyrolosis and gasification for EfW and biomass. Penny has extensive knowledge in the techncial and financial assessment of Energy from Waste (EfW) and biomass schemes and her skills and experience are key to Sustainable Energy's feasibility, heat mapping and masterplanning services. She has provided important contributions to a number of DECC Heat Network Delivery Unit projects including complex energy demand modelling, identification of generation options, technical and financial appraisal and detailed reporting.

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.

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.

Denise Seager – Office Administrator

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