Key Contacts

Dr Charlotte Higgins has an extensive background in the energy sector with over 19 years of experience.

She has expertise in technology, economic and regulatory considerations for the future development of transmission and distribution networks including integration of renewable generation, smart grids, HVDC systems and low carbon technology. Charlotte also has a strong track record in project management.

Jonathan is a Principal Consultant and Grid Connections Lead with 10 years’ experience working as an electrical engineer and grid connection specialist. 

Jonathan has experience managing the design and delivery of grid connection work packages on both the distribution and transmission network for onshore wind, solar PV, large biomass and battery energy storage projects across the UK. Since he joined TNEI Jonathan has worked with and provided support to offshore wind and island wind developers.

He has also coordinated the delivery of Contestable Works for embedded generators. He has significant experience in power systems analysis specifically providing power quality grid compliance studies (P28 &Harmonics).

Jonathan has good communication skills and has provided technical, commercial and regulatory advice to clients. He has significant project management experience, and a pragmatic approach to problem solving.

Tan has over 15 years professional experience in both power system consultancy and software development.

He is experienced in power system analysis including load flow, fault level, power quality, harmonic and dynamic studies for various onshore renewable generations.

He is also expertise in undertaking other specialised studies such as wind farm constraint analysis, generation planning and distribution pricing. He is also involved in developing custom software to perform more complex studies e.g. planning tools for DNOs), wind farm annual curtailment and generation incremental transfer capability studies.  

James works within the Environment & Engineering team providing clients with the advice and support needed to take their project from conception through to construction. Skills within the team include Environmental expertise, Planning, EIA coordination, GIS, Grid Connections, Electrical engineering, Civil Engineering and Health and Safety advice.

James is a Chartered Civil Engineer and Certified Member of the APS, with extensive experience in the energy sector. His career started in the energy sector in 2004 delivering civil, structural designs and geotechnical investigations for onshore wind projects, as well as acting as Owner’s Engineer and Bank’s Engineer.

James later managed a dedicated design team providing input into EIAs, discharging planning conditions, preparing detailed designs, site verifications and defective works investigations. James’ work included the repowering of 2 UK wind projects, technical due diligence across several countries and assisting a Transmission and Distribution contractor develop their Balance of Plant offering to the UK wind market.

In 2014 James joined TNEI where he has applied his skills to support developers on a range of energy projects including onshore and offshore wind, solar, battery storage, STOR, hydrogen, EVs and electricity transmission. 

Jason has 11 years’ experience in the environmental consultancy sector working on Environmental Impact Assessment, Environmental Safeguarding and Environmental Due Diligence projects for energy related developments of varying scales.

Jason has extensive experience of coordinating Environmental Impact Assessments, technical review of a range of environmental assessments, production and review of Environmental Statements and consenting documents and undertaking a range of topic specific assessments. 

Dr Andrew Oliver’s core skills are in power systems analysis and developing tools to perform complex studies using Python, with over 10 years of experience.

He has more than ten years of experience including load flow, fault level, harmonics, filter design, reactive power, transient analysis and network planning studies amongst others. Since joining TNEI in early 2009 Andrew has been involved in varied projects including studies for wind farms (on and offshore), PV connections and for transmission and distribution network operators.

Etienne is a Principal Consultant employed by TNEI Africa since 2017 and is based in the Cape Town office in South Africa.

Etienne has a BEng (electrical and Electronic) degree from the University of Stellenbosch and has 10 years working experience in the power generation industry.

Etienne previously worked for the South African utility, Eskom for 5 years and AECOM one of the largest multi-disciplinary engineering firms for 3 years. 

Zoë has a utilities background in generation and distribution, totalling 12 years. Zoë is able to draw on plant operations and asset management experience, as well as network planning, power systems analysis and generation integration.

With a passion for renewable energy and a post graduate qualification in sustainable energy systems, Zoë has been closely involved in South Africa’s Renewable Energy Independent Power Producer Procurement Programme and has experience in strategic and optimal grid integration of renewable generation at all voltage levels. 

Supipi has over nine years experience in the distribution and transmission industry. Her experience has been developed through electrical contracting, working in distribution network operators and through specialist consultancy services with a strong UK focus in distribution network planning and power system studies.

Supipi has extensive experience in the modelling and analysis of windfarms for Grid Code compliance and design of earthing systems using DIgSILENT PowerFactory and CDEGs software respectively. 

Jean-Louis has a broad range of experience in power systems studies including grid code compliance, insulation coordination and transient recovery voltage study.

Prior to joining TNEI, he spent more than twenty years professional experience in Electrical engineering including with ALSTOM, AREVA T&D and ALSTOM Grid where he held the position of Principal Research Technologist and gained the title Senior Expert in Power System and Electrical Machines. 

Diptargha specialises in modelling and analysis of transmission and distribution networks. His core expertise includes power system stability analysis, grid integration of renewable energy and dynamic demand response.

He has a strong academic background coupled with good understanding of new concepts in power networks e.g. microgrids, active network management, dynamic frequency support, point-of-load voltage control. 

David has 10 years experience within the energy sector from having worked for an energy organisation both in Southern Africa and in the United Kingdom.

His unique experiences in engineering design, installation and commissioning of projects, have afforded him the opportunity to enable practicable, technical and innovative solutions within the electrical distribution and power engineering discipline. 

Matthew provides GIS support across the business including site finding analysis, feasibility assessments and constraints mapping. Matthew has undertaken a number of energy infrastructure studies utilising GIS in order to assess the technical, planning and environmental feasibility of capacity and siting options for a range of technologies.

He also undertakes site finding & feasibility assessments for potential energy developments and infrastructure including detailed constraints mapping. This includes facilitating the mapping and graphics requirements for reporting, project decision making and optimisation of site design.

Mark’s work focuses mainly on the technical aspects of renewable energy developments including site finding, GIS mapping services, and various types of noise assessments.

Mark has provided GIS and CAD support for numerous projects at TNEI, including renewable energy, power systems, and residential and industrial developments.

Experience includes data management and analysis, site finding and feasibility assessments, site design, production of technical plans and figures, and general mapping services for the duration of a project. 
 

Mark has a proven track record of Network Modelling and since joining TNEI has become proficient at using DIgSILENT PowerFactory.

In addition to Mark’s power system modelling experience he has also been involved in a wide variety of innovation projects.

His most recent projects have allowed him to research area’s such as Blackstart via distributed energy resources (DER); the impact of high penetration renewable energy integration onto the electricity network and the use of non-synchronous renewable generation for ancillary services.

At TNEI, Jeganathan is involved in various types of power system studies such as load flow, short circuit and reactive power capability studies, insulation coordination, assessments of fault-ride-through compliance, transient stability, harmonic compliance, inrush and voltage quality compliance, fault infeed study for Schedule 14 DRC code, network capability (steady state capacity and dynamic stability) assessment under contingencies, grid feasibility studies, power flow analysis in LV unbalanced networks and also provides grid connection application support for transmission/distributed connected generator developments. 

Ewan joined TNEI in August 2016. Since graduating from his academic studies and joining TNEI, Ewan has specialised in Environmental Acoustics work but has also drawn on a range of environmental and engineering experiences including environmental impact assessments, site finding and feasibility assessments and GIS mapping.

Ewan has worked on projects in sectors including onshore wind, offshore wind, oil & gas, residential, port services, conventional energy and low carbon transport.   

Alex is involved in grid connections projects, regularly advising developers on grid connection strategies, and project construction timescales and costs for both distribution and transmission connections. 

She has worked on a number of capacity searches across DNO areas, covering different technologies and connection capacities. She often liaises with DNOs and NGET to help progress projects and has helped clients with connection applications.

Her focus has primarily been on onshore wind but she has worked on solar, battery storage, marine energy and EV projects.

Luc’s work is primarily focused on the maintenance of IPSA. He also provides support to customers and is engaged in the implementation of new features into the IPSA software package. Luc has worked on several science-based projects that use computers as computing and modelling tool.

His primary skills are C++ programming and software design, but he has also knowledge in other languages, such as C#, MATLAB and Fortran.

Kevin has been involved in network planning projects through secondment with Scottish Power Distribution as well as a number of business plan assurance work with a transmission operator.

His key experience includes fault level and load flow analysis of connecting generators, fault level studies of distribution networks, distribution network modelling using DigSilent and business plan assurance. 

Obinna is involved in various power system studies including load flow, short circuit, P28 power quality (transformer inrush, voltage step change, flicker) reactive capability, network capability assessment, wind farm constraint analysis and calculating network use charges for distribution companies.

He also has expertise in scripting in multiple languages for automation of power system studies, and therefore is involved in developing and adapting software tools for more complex power system studies. Obinna holds a PhD in Power Systems Engineering.