About us

Find out more about Powervault's mission and the people behind the products.

The Team

We are a growing, accomplished and cohesive team of professionals supported by an experienced Board of Directors.

Joe Warren portrait

Managing Director

Joe Warren

Joe has spent 10 years working in the smart grid sector and is passionate about working in start-ups to bring new, smart grid technologies to market. He spent the first half of his career working in the fast growing Internet sector as Director of Hosting Operations at Pipex Plc. There he led a seventy-strong team at five UK locations, and was responsible for IT hardware, software and power infrastructure supporting 4,000 businesses and 250,000 consumers. In 2007, Joe moved to Open Energi/RLtec when it was a start-up. He helped bring their smart grid dynamic demand product from concept to commercial reality, creating a new market in which Open Energi arrived first. Joe managed Open Energi’s relationship with National Grid over a period of seven years and agreed the first ever Dynamic Demand contract for demand side Firm Frequency Response, securing contracts with National Grid and Sainsbury’s. Joe joined Powervault in 2014 as Managing Director. He obtained a BA (Hons) from the University of Oxford in Experimental Psychology and an MBA from INSEAD.

Chief Technical Officer

Toby Nightingale

Toby has 25 years of international experience in bespoke engineering research, design and development. He has led bespoke engineering projects within a variety of industries, energy, media, motorsport, finance and security. He has brought products from initial concept to large scale mass production and has delivered projects for the automotive, battery and consumer product sectors for companies including Acco Brands, Nissan, FIA Formula E, IBM, Dell, Ford and Time Warner. Toby has headed up a wide range of conceptual engineering and system integration projects across diverse communications platforms including cellular, encrypted RF, VoIP, broadcast media, Bluetooth, wireless LAN / mesh networks and satellite. Toby joined Powervault in 2017 as Chief Technology Officer.

Project & Operations Director

Martin Ruse

Martin has over 20 years’ experience in the global corporate environment of precision engineering at companies such as ITT (now Xylem), and Crane, where he was responsible for global sales, operations and new product development.  More recently, Martin spent the last six years of his career providing operational support and consultancy services to technology start-ups in motorsport, media, and harsh-environment electronics.  These management roles have covered everything from R&D, through development and manufacture, to global system deployments. Martin has a degree in Aeronautical Engineering, an MBA, and is qualified in VBSS and Lean Engineering.

Financial Controller

Viren Thakker

Viren has more than 10 years’ experience in Finance. He has worked across several industries, in businesses ranging from <£1m revenues to £multi-million revenue PLCs, and within sectors ranging from Production to Wholesale to Retail to Technology. Whilst working with Isabella Oliver (High-end Fashion brand), Chemilines Group (Pharmaceutical Distribution), Close Ventures (Investment Management) and Techspace Property Group (Co-working spaces), Viren helped a variety of organisations improve and streamline processes and procedures to maximise efficiency. Viren is a commercially astute and dedicated finance professional with well-rounded business experience, which enables him to drive growth through improvements in systems, management information, change management and cash flow management. Viren is ACA-qualified and is focused on using the right systems and processes to enable Powervault, which he joined in 2017, to grow at speed over the next few years. In his spare time, Viren likes to play his favourite sports: cricket, volleyball and table tennis.

Charlie Vey portrait

Business Development Manager

Charlie Vey

Charlie started his career at Solution Sciences, a start-up soft drinks business, where he spent two years growing the distribution, sales and marketing of Alibi Drinks amongst a variety of retailers in the U.K. Charlie then moved to Associated British Foods where he built and managed business plans and relationships with large, multinational grocers as part of a two year commercial graduate scheme. He joined Powervault in 2015 to look after sales to distributors and installers and is now working with large customers, including energy suppliers, to bring home electricity storage to the mass market. In his spare time, Charlie will be found either on his miniature-wheeled bicycle or on a pair of skis in the Alps. Charlie achieved a BA (Hons) from Durham University in Economics, Business & Geography in 2011.

Business Development Associate

Tom Ross

Tom graduated in 2013 with a BSc (Hons) in Psychology, from Goldsmiths College, London. He started his career working in Advertising, and progressed to work as a Sales Executive at Sky Media. Working as part of the Independent Agencies team, he managed a portfolio of a wide range of advertising agencies, handling an account with a monthly ad spend of over £3m. He started at Powervault in 2017, joining the Business Development team to follow a passion of sustainability and renewable energy. In his spare time, Tom enjoys playing rugby, running, and playing keyboard in a band.

Business Development Associate

Jack Peck

After graduating from the University of Liverpool with a BA (Hons) in History, Jack immediately started working in the renewable energy sector. He began as a Project Developer, working alongside Belectric and SunEdison on utility scale solar projects in the UK. In 2015, Jack went on to co-found his own development company, Clean Energy Generation, to focus on solar projects in emerging markets. Jack was responsible for sourcing and developing both on and off-grid sites in Nigeria and West Africa for international installers. Jack joined Powervault’s business development team in 2017 and is passionate about energy storage and its role in expanding the universal uptake of clean energy. In his spare time, he enjoys travelling and sport – rugby, cricket and football to name a few.

Business Development Associate

Pierre Dupuis

Pierre graduated in 2017 with a BSc (Hons) in Environmental Policy with Economics from the London School of Economics. He joined Powervault in 2017 as Business Development Associate to pursue his interest in renewable energy and the environment. Pierre has previously engaged in diverse work experiences across the sustainability spectrum, including internships in sustainability consultancy and green finance. Before joining Powervault, he worked at Sustainable Workspaces as a community builder, in search of innovative green start-ups.  In his spare time, Pierre enjoys attending concerts, cooking delicious food, and hiking across the world.

Commercial Analyst

Nick Wood

Nick joined Powervault in 2017, having previously worked as an analyst at the Solar Trade Association focusing on rooftop solar, behind the meter storage, networks and smart power. He has an MSc in Environmental Technology from Imperial College London, where he specialised in energy policy and technology and wrote a thesis in collaboration with Ofgem on local energy systems and non-traditional business models. Prior to that, Nick managed a small fund at a charitable foundation, making grants in the environment and international development. In his spare time he enjoys going to gigs and cycling, and is trying to make a perfect pizza base.

Commercial Analyst

Ioanna Armouti

Ioanna obtained an MEng in Electrical and Computer Engineering at the National Technical University of Athens, in 2016. She specialised in the design and construction of electric motors for automotive applications and also focussed on low energy power system of prototype electric vehicles.  Ioanna’s main research was focused on single and multi-objective optimisation algorithms. She spent two years on the team of an automotive research project at NTUA, which built hand-made, eco-friendly, prototype, electric vehicles. Ioanna’s passion for green transportation methods led her to further develop her knowledge and understanding of strategies for ecological power consumption. Ioanna joined Powervault in 2017 as Commercial Analyst and enjoys helping create a greener and more sustainable planet.

Project & Operations Manager

Abe Eustice

Abe has 12 years of heavy mechanical construction experience in Northern California as an engineer and project manager.  His experience included several water pump stations, HVAC systems as well as the LEEDs California Academy of Sciences building in San Francisco.  He has been a registered Professional Mechanical Engineer in California since 2010. Prior to joining Powervault in 2017, he completed an MSc (Distinction) in Sustainable Energy Technologies and Management at Brunel University with a focus on energy storage.  He is passionate about the energy storage sector and its role in realising the potential of renewable energies. In his free time, Abe is an avid volunteer with Engineers Without Borders, The SF Guardsmen and the Energy Institute’s Young Professional Network.

Project Manager

Abilash Plammoottil

Abilash holds a BEng Systems Engineering from Loughborough University and an MSc Solar Energy & Environmental Engineering from Dalarna University, Sweden. He started his career in Lightsource RE in 2013 as an Operations & Maintenance Monitoring Engineer before joining juwi Renewable Energies as a Project Engineer. Abilash joined Centrica as a Project and Design Engineer in 2015 where he was involved in a large number of PV projects, ranging in size from 60kWp rooftop installations to 10.17MWp private network installations. He grew up in Italy and joined Powervault in 2017 as Project Manager; in this role he leads the management of all field trials and large projects.

Head of Manufacturing & Quality

Chetan Pandya

Chetan joined Powervault in September 2016 as Head of Manufacturing & Quality. He has over 17 years of R&D, design & technology and engineering management experience in high-tech electronics and scientific instrument SMEs.  After gaining a BEng (Hons) in Mechanical Engineering, Chetan started his career in the Print & Publishing industry before moving into the IT sector. An expert in Operations, New Product Development and Project Management, Chetan has been involved in numerous projects entailing R&D, engineering concepts, engineering specifications, prototyping, software-testing and electro-mechanical hardware manufacturing. At Cyberview Technology, Chetan was part of the team that designed high integrity, complex and innovative hardware and software for the gaming and betting industry. At Duvas Technologies, Chetan oversaw Operations and developed and managed the team responsible for designing an electro-optical scientific instrument for ambient air quality monitoring.  When Chetan is not tinkering with technology, he enjoys walking, gardening and exploring different cultures by visiting new places.

Systems Engineer

Oliver Clay

Oliver gained his degree, MEng Mechatronics, in South Wales, before starting his first job as an embedded software engineer at The Foreign & Commonwealth Office (FCO). During this time, he renovated a canal boat and installed a custom Combined Heat & Power unit and a 32kWh domestic battery/inverter system to the boat, which enabled him to live on the canal ‘off-grid’. After 4 years with The FCO, Oliver moved back to South Wales to work for Guardian Global Technologies where he was involved in the hardware, firmware and software design and testing of downhole tools and communication equipment for the oil & gas industry. In 2016, Oliver joined Magstim, a medical device company, as a Software Engineer; there he developed firmware for Transcranial Magnetic Stimulation (TMS) equipment, which is used as a treatment for depression and as an alternative to Electroconvulsive Therapy. Following his passion for all things batteries, Oliver joined Powervault in 2017 as Systems Engineer. Oliver is a STEM ambassador and has been judge for the ‘First LEGO League’ in South Wales. In his spare time, after spending time with his daughter & identical twin boys, Oliver turns to model engineering: mainly steam engines, but also aircraft, rockets, boats, and hovercraft.

Senior Firmware Engineer

Nicolas Rocha

Nicolas started his career in 2006 working for high-tech electronic consultancy companies which involved his development, system design and verification of new electronic products. After moving to the U.K. in 2008, Nicolas worked for the water industry where he was part of the team that developed an M2M water leak detection system, which became a key enabler for the smart water networks. He then moved to General Electric Oil & Gas where he spent 5 years working on the development of embedded firmware / hardware for a different range of sensors used in oil & gas exploration. He also supported field trials of new products and implemented design enhancements for manufacture procedures. Nicolas’ passion for the ‘Internet of Things’ and renewable energies lead him to join Powervault in 2017. Nicolas gained a BSc in Electronics from the Colombian School of Engineering and an MScs in Embedded and Distributed Systems from London South Bank University. He enjoys spending time with his daughter, strumming his guitar and playing beach volleyball in his spare time.

Razvan Vasiliu portrait

Product Engineer

Razvan Vasiliu

Razvan started his career working in the audio industry performing electronic repairs for both corporate and private customers. He joined Powervault in 2015 and splits his time between testing and evaluating new Powervault iterations in the lab and remotely analysing customers’ Powervault performance. Razvan obtained a BEng (Hons) from the University of Manchester in Electronic Engineering in 2015. In his spare time he enjoys building highly inefficient tube amplifiers and playing his guitar in a band.

Senior Software Engineer

Prashant Tiwari

With over 10 years of experience using open source tools, Prashant brings a wealth of I.T. experience to Powervault. He has extensive experience in Banking and Finance Domain, having worked in the front office teams of one of the world’s largest Tier 1 investment banking firms for 7 years. Prashant is also actively involved in the open source community in the U.K. and is one of the co-organisers of ‘PyData London’. Owing to his contributions to the U.K.’s digital economy, Prashant has been endorsed by Tech City UK via their ‘Tier 1 Exceptional Talent Visa for Digital Technology’.  Although he is a Pythonista at heart, Prashant is also a long term Linux enthusiast. He joined Powervault in 2016 and leads the backend software development of Powervault’s smart, cloud-connected products; he is responsible for managing all Python-based components deployed in the cloud and is leading the development of Powervault’s flagship software products and features.

Software Engineer

Leo Meng

Leo is an experienced electronic Systems Engineer with more than seven years’ experience in
the education and oil and gas R&D industries. Before joining Powervault in 2017, Leo worked as Embedded Systems Engineer in CENSIS, an IoT innovation centre. He was responsible for many cutting-edge IoT projects: LoRa-based Smart Campus technology, Smart street lighting, Smart vibration sensors for the oil and gas industry, Smart office etc. Prior to CENSIS, Leo worked as Wireless System Engineer in Aker Solutions, driving an R&D project that developed a smart wireless condition monitoring system for oil and gas assets, which involved vibration, acoustic emission, strain gauge and ZigBee wireless communication technology. Leo has also spent three years researching wireless sensor networks at the University of Strathclyde for his PhD, specialising in wireless communication, distributed data processing and electronic system design.

Software Engineer

Mihai Dobre

Mihai obtained a MEng in Computer Software Engineering from the University of Bucharest in 2016. He spent two years working for Infineon Technologies as a Software Engineer where he worked on Infineon’s internal metamodelling tool chain and data flows. In 2014 Mihai started working for Luxoft where he designed new features and bug fixes for the backend of an open source test automation framework using Python 2.7. He subsequently spent a year working for Cegeka Romania before joining Powervault as Software Engineer in 2017. His main expertise is Python programming for backend applications and scripting.

Software Engineer

Amit Kumar

Amit joined Powervault in 2017 as a Software Engineer. He previously worked as a Software Engineer in Zomato’s Machine Learning Team. Before Zomato, Amit was a Software Engineer Intern at HackerEarth’s R&D Team. He also participated in Google’s ‘Summer of Code’ in 2016 and 2017 as a Mentor in SymPy organisation. In 2015, while he was a student, Amit joined the Python Software Foundation and worked on SymPy’s Equation Solvers module in Google’s ‘Summer of Code’ 2015. He graduated as a Mathematics and Computing Engineer from Delhi Technological University (formerly Delhi College of Engineering) in May 2016. Amit has spoken at various national and international conferences and local meetups. Having lived in New Delhi for most of his life, he now enjoys living in and exploring London.

Test Engineer

John Chan

After gaining a Physics masters (MSci) from Imperial College London in 2008, John spent 7 years at Duvas developing an air quality sensor from pre-prototype to market. His roles varied between optical-mechanical assembly, testing and validation, preparing technical documents, and liaising with customers/suppliers. He worked closed with early adopters of the Duvas device. For example, integrating an instrument into a field deployable emissions compliance vehicle for the United States Environmental Protection Agency. John joined Powervault in 2017, as Test Engineer. Supporting field staff, and overseeing testing for new Powervault designs, and general testing support. In his spare time, he enjoys swing dancing, specifically Lindy Hop.

Electronics Engineer

Luis Ramirez

Luis started his career as an electronics design engineer in 2005, developing control systems and power electronics for the elevators and lifts industry. While studying for his Masters Degree in Electronics Engineering in 2010, Luis continued to design electronics and spent time developing ultrasound cleaning machines. After moving to the U.K., Luis started developing power electronic devices and IoT products for the automotive and marine market before joining Powervault as an Electronics Engineer in 2017.

Electronics Engineer

Enrique Castillo

Enrique, originally from Spain, studied in Santiago de Compostela and received a diploma in Science and Technology. His passion for technology and, in particular, clean technologies, spurred him to study Energy Engineering at the Universidad de Vigo, which is the only university in Spain to offer such a specialist course. Enrique enjoys spending time in different countries and therefore decided to study for his thesis on Second Generation Renewable Biofuels at the Universita degli studi di Perugia, in Italy, where he obtained excellent results in transforming Eucalyptus bark into ethanol. Enrique moved to London in 2017 to begin an engineering internship with Powervault. After three months as an intern, he joined the team as a full-time testing engineer. Enrique is mostly involved in the design, development and testing of Powervault’s second-life battery product.  In his free time, Enrique enjoys playing football, surfing in Spain, and strumming his guitar in the evenings.

Office Manager

Emma Cook

Emma graduated from Canterbury University in 2010 before joining Office Angels as a free-lance administrator and PA for two years. At Office Angels she worked in a variety of businesses before joining a large air conditioning company full-time where she was in charge of all office administration. In 2016, Emma joined PricewaterhouseCoopers where she supported senior management and organised the administration of a wide range of services and facilities. Emma started at Powervault as Office Manager in 2017 and enjoys cooking and making jewellery in her spare time.

The Board of Directors

The board of directors offers a wealth of experience and support to the Powervault team.


Simon Acland

Simon is an active business angel investor in green technology. He sits on the board of two Triple Point VCTs, which invest primarily in renewable energy, and is a member of the investment committee of the British Business Bank’s Angel CoFund. He is an advisor to the Green Angel Syndicate and is also a Trustee of Plantlife, the UK’s main wild plant conservation charity. Simon has spent 30 years investing in young technology businesses. Much of his venture capital career was spent as Managing Director of Quester, which became one of the UK’s most active early stage technology investors. Seven of the companies that he has backed achieved public listings on the London Stock Exchange, AIM, Nasdaq or Easdaq, including two companies which reached the FTSE 250; many others have been successfully sold. He joined the Powervault board in 2012 when he was the lead angel investor in the first funding round.


Andrew Wordsworth

As former Managing Director of Carbon Trust Enterprises, Andrew has previously led the creation and launch of twelve low carbon companies, which have secured over £250m in equity commitments. A former process control engineer with Esso Petroleum, Andrew has strategic consulting experience with Bain and Arthur D Little.  Andrew is Co-Founder of Sustainable Ventures Development Partners (SVDP); in 2015 he led the exit of SVDP’s first start-up, E-Car Club, to Europcar in what is now recognised as the UK’s first successful crowdfunding exit. Andrew holds a first-class MEng in Chemical Engineering from the University of Cambridge, where he was awarded the University Fox Prize. He was named ‘Entrepreneur of the Year’ by businessGreen in 2015.

Board Member

Paul Roberts

After a successful executive career in Asset Finance (Lex Service plc and GE Capital) and Private Equity (TDR Capital), Paul is now building a portfolio of investments in the renewable energy sector. He has an MA in Economics from the University of Cambridge and an MBA from the University of Warwick.

Board Member

Vitaly Lazorin

Vitaly is the CEO and Managing Partner of Future Matters, a privately-held, London-based investment firm. Future Matters focusses its investments in the UK and Europe in a diversified portfolio of early-stage companies operating in clean tech and digital technology industries with potential for a multiple increase in value and market leadership.

Vitaly began his professional career in 1992 as an Audit Assistant at Price Waterhouse (now PricewaterhouseCoopers). He worked as the Financial Controller of the Lower Volga EBRD-sponsored regional venture fund, and then as Investment Associate at The Carlyle Group. Vitaly holds a degree in International Economics Relations from the Moscow State Institute of International Relations (MGIMO). He is a Chartered Certified Accountant.

Board Member

Nick Lyth

Nick joined the Powervault Board in June 2016. He is co-founder and director of Green Angel Syndicate (GAS), the first business angel syndicate in the UK to specialise in investments in energy and water sectors. Nick is a marketing and sales specialist with over ten years’ experience building up a new applied research institute in the eco and environmental arena: International Resources and Recycling Institute (IRRI).

Nick has been asked to speak at numerous conferences around the UK and Europe on matters concerning sustainable resources, and has been invited to assess innovation competitions in the UK run by the Technology Strategy Board (now Innovate UK) and Scottish Government.

Nick founded GAS in order to use the knowledge gained from the research world to help to commercialise resource use innovations effectively and successfully, for the greater benefit of the green economy.

Board Member

Niko Miaoulis

Niko Miaoulis is the Founder and Managing Director of Greenman Solar, a large and reputable solar PV installer based in Ashford, Kent. Niko brings significant solar PV expertise to the Powervault board and has 25 years of high-end engineering experience in the semiconductor, electronic and software markets. He has worked with LSI Logic, Marconi, Seagate, Cookson Group, NEC and IBM. He has also held director level sales and marketing posts in a number of these companies.

Board Member

James Byrne

James Byrne is a Venture Director and is responsible for venture development across the Sustainable Ventures group. He co-founded the Green Light Distrikt, an international network for young entrepreneurs and innovators in Cleantech, and has over six years of experience in technology and sustainability start-ups. He currently advises the Mayor of London as a Commissioner on the London Sustainable Development Commission and was named a Future Leader by the UK-Green Building Council. James holds an MSc in International Technology Management from the University of Warwick and a BSc from the University of Leeds.