PPA Energy team

Jonathan Hedgecock
Jonathan Hedgecock

Jonathan is the Practice Director for PPA Energy. Jonathan has worked in power sector consultancy for the past 28 years, and specialises in the provision of technical advice to power utilities, project sponsors/financiers and regulatory bodies in the UK and internationally on power sector restructuring and electricity market implementation. He is a specialist in network planning, pricing and regulation. He also has specialist skills in the assessment of smart grid projects and their contribution to low carbon developments in the electricity sector.

Jonathan has worked in Latin America, Africa, Europe and the Far East on a wide range of electricity restructuring assignments covering technical and regulatory areas. These have included assessing agreements for connection to, and use of, international transmission systems, the supervision of planning, pricing and interconnection studies and the development of technical regulatory standards. He has also worked on a range of commercial arrangements for the provision of ancillary services (voltage and frequency control, black start capability, etc.). He has worked with international clients including the Southern African Power Pool, the Office of Utilities Regulation in Jamaica, the National Load Dispatch Centre in Vietnam, and the Energy Regulatory Commission in Thailand. He also worked on a major assignment in electricity sector restructuring in Brazil for the World Bank. In the UK he has worked on a number of projects for Ofgem, including heading the consultancy team supporting the assessment of applications for the funding of distribution and transmission projects from the Low Carbon Networks Fund and the Networks Innovation Competition. Jonathan is a Chartered Engineer and has degrees in Electrical Engineering and in Theology.

Tel: 01483 544944
Email: jonathan.hedgecock@ricardo.com

Cliff Walton
Cliff Walton

Cliff Walton is an acknowledged international expert in the management of power network assets. Previously Technical and Regulatory Manager for London Power Networks and Head of Strategic Development for EDF Energy Networks. He has extensive experience in engineering, innovation, commercial, financial, business process and technology change activities. He has had a wide range of roles and responsibilities in both power and telecommunications.

He is an authority on smart networks, network visibility, asset ageing and condition monitoring in power distribution networks, and has a wide range of research interests in development and deployment of technologies relating to multi vector energy systems, renewable generation, smart networks, sustainability, intelligent network management, online condition monitoring and innovation from concept to Business as Usual. Cliff leads a range of large projects introducing smart network functionality in the UK under the Low Carbon Networks Funding and other funding mechanisms and provides advice to a wide range of Government, Academic, Manufacturing, Industrial client as well as Network Operators. He was a founding Patron of the Institute of Asset Management, is Past Chair of the IEEE UK & RI Power Engineering Society and sits on a variety of academic, industry and governmental panels. Cliff is a Chartered Engineer, Fellow of IET, Senior member of IEEE, member of the Institute of Asset Management, and a Visiting Professor at Imperial College London. He has authored and contributed a large number of reports, papers and conference presentations on wide variety of subjects.


Tel: 01483 544944
Email: cliff.walton@ricardo.com

Tony Woods
Tony Woods

Tony is a Managing Consultant. He is a utility management professional with around 10 years consulting experience in addition to more than 30 years working for EDF Energy (previously London Electricity and London Electricity Board) where he held many roles dealing with aspects of the commercial and financial activities of the electricity industry, including managing the commercial and financial teams for the then EDF Energy (now UK Power Networks) distribution businesses. As well as his commercial and financial background Tony has been involved in many aspects of regulation.

He also has a strong interest in the strategic responses to the likely future changes – structural, technical, institutional, regulatory, customer etc. - to the energy industry driven by decarbonisation, the use of renewable technologies and varying customer behaviour and attitudes. He has undertaken a wide range of consulting projects both in the UK and internationally. This includes a number of projects for Ofgem such as supporting the assessment of innovation proposals put forward by network operators under the network innovation competition and low carbon network fund arrangements, and price control reviews of transmission and system operator businesses. Other UK clients include Imperial College London, ETI, and DECC. Overseas assignments have included work in Jamaica, Guyana, Uganda, Bangladesh and South Africa. Tony has extensive experience of UK practice in the management of electricity networks and the energy sector generally and has participated in most elements of managing a large utility business.

Tony is a Fellow of the Chartered Institute of Management Accountants, a Certified Global Management Accountant and a visiting professor at Imperial College, London. Between 2000 and 2009 he was a non-executive director of Electralink Ltd - the Company which provides the data transfer network to the competitive electricity supply market in the UK and a range of other data management related and governance services.

Tel: 01483 544944
Email: tony.woods@ricardo.com

Sarah Carter
Sarah Carter

Sarah is a Chartered Engineer with over 20 years of experience in power consultancy and project management. Sarah has had responsibility for and been involved with a wide variety of projects associated with smart networks for UK Distribution Network Operators. These include the Smart Grid Forum Distribution 2030 study; several Low Carbon Network Innovation projects including consideration of the development of network visibility tools to enhance technical and commercial decision making by system operators and planners; as well as projects involved with condition monitoring of equipment and the consideration of future power supply options. Sarah is assisting the Energy Networks Association (ENA) with the implementation of the European Network Codes and their integration with the existing GB distribution documents and has previously provided technical support to the ENA and Ofgem in respect of Distributed Generation. Sarah has also worked with regulators in Africa, Jamaica and Ireland.

Prior to joining the PPA Energy Practice, in 2005 Sarah worked for Parsons Brinkerhoff where she gained considerable experience in power system studies to plan and analyse transmission, distribution and industrial power systems across the world. She has undertaken studies to consider system development, load flow and short circuit analysis, dynamic stability, loss reduction, harmonics and reliability.

Tel: 01483 544944
Email: sarah.carter@ricardo.com

Graeme Chown
Graeme Chown

Graeme Chown is a director of PPA Energy (Pty) Ltd in South Africa, a wholly owned subsidiary of Ricardo, and manages all local activities. Graeme is a power systems control and operations specialist with over 25 years’ experience in the electricity industry with extensive experience power system operations, electricity markets, electricity regulation, ancillary services, transmission pricing, power system studies, power system modelling and power station control. Graeme joined PPA Energy in January 2005. Previously he worked for 18years for Eskom, the main power utility in South Africa. He has a PhD, is a registered professional electrical engineer with Engineering Council of South Africa and is a member of the South African Institute for Electrical Engineers.

Graeme has led many major projects covering power station control systems design, commissioning and optimisation. He assisted Eskom with Automatic Generation Control, constrained dispatch, training simulator and load forecast applications specification, detailed design, acceptance testing, commissioning and optimisation of their new SCADA system purchased from Areva-TD. One of his focus areas is frequency and Automatic Generation Control systems specification and design, including the design of a fuzzy logic controller, under frequency load shedding studies and the frequency control redesign of the Southern African Power Pool. He has undertaken scheduling and dispatch, ancillary services, transmission pricing and balancing markets design and review for the Eskom Power Pool, Thailand, Abu Dhabi, West Africa Regional Regulator and Southern African Power Pool, including financial analysis, technical performance monitoring, controller training and certification procedures.

Email: graeme.chown@ricardo.com

Arbaaz Nayeem
Arbaaz Nayeem

Arbaaz is the Business Area Manager for Overseas projects in the PPA Energy Practice. He is a principal consultant with over 8 years of experience in development consulting. He has a Bachelor’s in Business Administration and a Masters in Energy, Environmental Technology and Economics. His work experience in strategic and management consulting covers various countries in Asia and Africa. He has most recently developed the Generation Dispatch Verification Tool for the Office of Utilities Regulation in Jamaica. He has also been involved in the development of the 5-Year Strategic Business Plan for the Regulator of the East Africa Power Pool (ERERA), and in the Integration of Economic and Financial Analysis in the existing Institutional Processes at the National Power Transmission Corporation of Vietnam (EVNNPT).

Prior to joining PPA Energy, Arbaaz served as the Chief Executive Officer of e.Gen Consultants Ltd., Bangladesh. He has served as Project Director for various high profile assignments including the development of the Mongolia Energy Sector Master Plan for the Ministry of Mineral Resources and Energy (MMRE) and the Asian Development Bank; the Training and Curriculum Development for Public Private Partnerships in India, for the Ministry of Finance (DEA) and the World Bank; and the Expanding Access to Islamic Finance for SMEs in Indonesia for the World Bank. He was also attached with the Prime Minister’s Office in Bangladesh under the IFC supported Policy Coordination Committee project and has lead training in Public Private Partnerships (PPPs) for government officials in Bangladesh.

Tel: 01483 544944
Email: arbaaz.nayeem@ricardo.com

Mahmoud Abu Ebid
Mahmoud Abu Ebid

Mahmoud is a Chief Consultant with overall responsibility for CHP business. He has over 18 years of practical experience of energy use in industry and buildings, with an in depth knowledge of CHP technologies, applications and Government Policies. Over this time he has developed a good knowledge of energy markets reforms and policies and gained experience in dealing with CHP developers, Energy Services companies as well as Government Departments and their agencies, local authorities and other public sector organisations. As Chief Technical advisor to Defra, he provides policy and technical support on all CHP related aspects and represents Defra at a number of working groups dealing with CHP in the UK and Europe.

Tel: 01235 753193
Email: Mahmoud.Abu-ebid@ricardo.com

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Pat Howes

Pat Howes is one of our senior bioenergy experts, having worked in the area for over 20 years. She has been involved in bioenergy from the start in the UK, managing the Government’s landfill gas research programme in the 1980s and expanding into anaerobic digestion and biomass in the early 1990s. Pat’s expertise relates to the supply and demand for bioenergy, including an understanding of Government policy and regulation, bioenergy costs, supply strategies, combustion and environmental issues.

Pat has provided support and assistance to the UK Government and European Commission for a number of years; she also has over a decade of advising the private sector on the feasibility of bioenergy to suit their needs. She has been involved in major projects on the indirect impact of biofuels; on waste and waste wood; and has recently worked on the environmental impact of renewables and the energy infrastructure. She currently manages a Task for the International Energy Agency on integration of energy from waste into solid waste management. Pat has presented on bioenergy at many national and international events in Europe, America, Asia and South Africa.

Tel: 01235 753 254
Email: Pat.Howes@ricardo.com

Colin McNaught
Colin McNaught

Colin has 25 years of experience in providing advice on energy issues for policy makers and investors. Working initially in energy efficiency and CHP, his recent work has focused on the opportunities to deploy renewable energy systems in the UK, Europe & beyond.

Colin’s work includes strategic studies developing projections and scenarios for renewable energy development (for Scotland & Northern Ireland), foresighting use of renewable energy technology innovations and markets, as well as developing evidence bases for the functions needed from future power system architecture.

His work on renewable energy feasibility studies includes assessment of opportunities at building level, on business parks and at city and local authority level. These studies have involved technical assessment of renewable energy resources, constraints to development, investment returns and business cases.

He has undertaken audits and due diligence studies on a range of technologies (wind, hydro, biomass, tidal energy), using a combination of site audits and scrutiny of key technical, environmental and financial data to assess project performance.

Colin is a Chartered Engineer and Chair of the Scottish Energy Association, a body representing a wide range of energy companies in Scotland.

Tel: 01235 753258
Email: Colin.McNaught@ricardo.com

Neil Pinto
Neil Pinto

Neil Pinto is a Senior Advisor within the PPA Energy practice, having previously been Managing Director of PPA Energy since its formation in 1997 prior to the acquisition of the company by Ricardo in November 2014, and subsequently the Practice Director. He has more than 35 years’ experience in advising on issues associated with the development of the power sector, most particularly in developing countries, with a client base spanning Governments, Regulators, International and Bilateral Lending Agencies, Utilities and the Private Sector. He has a very wide international experience, and has undertaken assignments in Africa, Asia, South America, the Caribbean, the Indian Sub- Continent and the Far East. He has spent time resident in South Africa, and has a Director of a South African consultancy for the majority of the last 25 years.

Neil has led multi-disciplinary teams tasked with the objective of determining the optimal investment decisions for the power sector, covering issues such as Private Sector Participation, Restructuring, Generation and Transmission Development, Regulation and Pricing. Neil has participated in World Bank teams as a power sector expert, advising Government at high level. Neil has also run training courses in the planning and development of the Power Sector for a number of clients including the World Bank, Oil Majors and Regulators. He has also provided Expert Witness services. Neil has a good working knowledge of French, and has led projects in Francophone countries in Africa.

Neil is a Fellow of the Institution of Engineering and Technology and holds a Master’s Degree in Engineering from Cambridge University. He has authored a number of papers, one of which formed part of a World Bank published Technical Series.

Tel: 01483 544944
Email: neil.pinto@ricardo.com