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Elestor's solution can replace traditional fossil fuel power plants

The future of long duration energy storage is here

Elestor employees observing the Elestor technology

We are Elestor

With a focus on decarbonization and societal impact, we aim to revolutionize the energy system, create green jobs, and contribute to a clean, resilient, and inclusive energy future.


Elestor was founded in 2014 by Wiebrand Kout, an experienced scientist. Kout was convinced that he could invent a technological solution to one of society’s greatest challenges, namely climate change.

The following year, he was joined by physics graduate and seasoned businessman Guido Dalessi. Dalessi was impressed with Kout’s vision for a new, clean energy system with robust electricity storage at its core.

The two went on to recruit a team that would fine-tune and expand Kout’s invention.

They also secured investment from some of the most forward leaning forces behind the energy transition.

In the process, Elestor has earned the respect and trust of both policy makers and the general public.


Elestor believes a clean and sustainable energy system will soon be at the very core of society. Large-scale, long-duration and affordable electricity storage will be at the very core of such an energy system, in the form of bi-directional power plants that will replace current plants powered by coal, gas or oil.

The power of renewables coupled with electricity storage extends well beyond their ability to supply affordable electricity to households, transport and industry. Tomorrow’s inclusive energy system will also provide clean air in cities, stable global temperatures that help reduce the damage caused by natural disasters, and economic prosperity that will arise from the thousands of green jobs in the energy sector and in the many new industries it will support.

The energy transition will unify the interests of the Planet, the People and business Profitability.


Reducing electricity storage costs to the absolute minimum will aid the creation of a new, clean energy system.

Elestor will do this in partnership with other players in the renewable energy industry, with committed, long-term investors, and with policy makers at both local, national and international levels.

This energy system will be based on three pillars:

One, renewable energy generated by solar and wind.

Two, large-scale, low-cost and long-duration energy storage that ensures electricity is available also when there is no sun and wind.

Three, sophisticated micro-grid, electricity grid and hydrogen pipeline infrastructure that helps distribute clean electricity to those who need it, whenever they need it.

Executive team

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Guido Dalessi, Chief Executive Officer

Guido Dalessi joined Elestor in May 2015, and is also one of the investors. He is a physics graduate (1986) who started his career in R&D of laser based measuring equipment. In 1996, he joined a high-tech startup, which developed high-tech equipment for optical disc production. As Director Sales & Marketing, Dalessi initiated the international business activities, established a sales and service network with global coverage, and headed local branch offices in Singapore and Los Angeles.

In 2004, the company was acquired by the publicly listed Singulus Technologies AG, after which Guido was promoted to Executive Vice President. Two years later the company acquired its main competitor and Dalessi was appointed CEO, where he managed the merge of both enterprises into Singulus Mastering BV. During his eight years in charge, the company rose to become the global market- and technology-leader in its field.

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Pieter Pijper, Chief Financial Officer

Pieter Pijper joined Elestor in August 2023 , and is also one of the investors (MBI). Pieter Pijper, CFO

With an educational background in Business Economics, Pijper has enjoyed a successful career that spans more than 30 years in business. He has always been active in internationally operating organizations – amongst others Deltares (formely known as Delft Hydraulics), Oranjewoud/Antea Group and Strukton Group – companies with technical DNA at their core, resulting in cooperating with passionate experts and engineers. This mirrors the current situation at Elestor.

During his period as Group CFO of Oranjewoud N.V. (2010-2018) Pijper guided a buy and build strategy that resulted in a revenue increase from €300m to €2,300m and saw staff numbers rise from 3,000 to 10,500.

Aided by rigorous financial structures, Pijper will help ensure the rapid commercialisation of Elestor’s hydrogen bromine flow battery technology.


Wiebrand Kout, Founder & Chief Technology Officer

Wiebrand Kout founded Elestor in 2014 to fill the need for large scale, ultra low cost electricity storage. Kout is responsible for the development of the company’s core technology, intellectual property, cost modelling and product planning.

Previously during his career, Kout has pioneered three hydrogen electrochemical systems: the PEM fuel cell, the electrochemical hydrogen compressor and the Elestor HBr flow battery. Prior to founding Elestor, he served as COO and lead designer at HyET, where he co-developed the first electrochemical hydrogen compressor capable of reaching 1,000 Bar in 2013. Today these noiseless hydrogen compressors are considered for use in hydrogen refueling stations by Shell Hydrogen.

Kout started his career in 1999 at NedStack Fuel Cell Technology, where he headed the mechanical design of Europe’s first series produced PEM fuel cell stack. This fuel cell, which is still in production today, is used in several Megawatt scale power plants around the world.


Hylke van Bennekom, Chief Operating Officer

Hylke van Bennekom joined Elestor in April 2021 to lead the operational transition towards large-scale production, and is also one of the investors (MBI). With an educational background in Industrial Business and Administration, van Bennekom joined Tempress Systems in 2007. From various operational roles he had a key position in Tempress’ advancement from a niche player in the semiconductor market to innovative high volume manufacturing in solar and semicon applications. Over time gaining a broad international experience in strategic sourcing, establishing independent production locations in Europe as well as Asia, onboarding of M&A’s as well as an extensive experience in managing change processes within rapidly growing companies.

After obtaining his Master in International Business (MBA) in 2018, van Bennekom played a key role in the disaggregation and privatization of the divisions within in the Tempress Group, leading to the sales of all divisions as independent companies in 2020.


Technical advisory board

Elestor has secured the participation of a prominent group of scientists and sector experts as members of its newly created technical advisory board.

As a cutting edge technology company, we invest significant resources in research and development in order to ensure we remain ahead of rivals in the clean energy storage sphere.

This leadership position has enabled us to attract top international scientists to our technical advisory board, which is obviously going to be 100% independent to preserve the integrity of its members and of their conclusions.

Elestor’s technical advisory board will initially comprise three renowned industry experts.

In no particular order, they are:


Peter Pintauro is the H. Eugene McBrayer Professor Emeritus of Chemical Engineering in the Department of Chemical and Biomolecular Engineering at Vanderbilt University, USA.

In addition Professor Pintauro is a co-founder of and the Chief Technology Officer at Bardo Climate, Inc, a start-up company that manufactures nanofiber-based products, such as bipolar membranes for energy and environmental applications.

Professor Pintauro, whose career has been illustrious after having been awarded a PhD by the University of California, Los Angeles in YEAR?, has research interests  in the areas of electrochemical engineering, membrane science, fuel cells, nanofiber electrospinning, and organic electrochemical synthesis.

He is a Fellow of the Electrochemical Society, a Fellow of the American Institute of Chemical Engineers, and a past President of the North American Membrane Society.

He was the 2018 recipient of the US Department of Energy Fuel Cells R&D Award and he received the Walter van Schalkwijk Award in Sustainable Energy Technology from the Electrochemical Society in 2023.


Peter Fischer has been working on energy converters and storage systems such as fuel cells and redox flow batteries since 2005, soon after completing his doctorate in physical chemistry at Heinrich Heine University, Düsseldorf, Germany.

In 2011, Dr Fischer became group leader of the Redox Flow Batteries and Stationary Storage group in the Applied Electrochemistry department at the Fraunhofer Institute for Chemical Technology (ICT). In his position, he was responsible for the RedoxWind lighthouse project. In this project, a large-scale vanadium redox flow battery was installed on the premises of the Fraunhofer ICT.

From 2017 to 2021, he also headed the FlowCamp doctoral network, which focussed on new flow battery technology. His research focuses on vanadium and bromine chemistry and stack technology.

Dr Fischer chairs the Communication Committee of the European association Flow Batteries Europe, co-chairs the "Sustainability" group in Batteries Europe, founded the European Union research network FLORES (Network of Flow Battery Research Initiatives).


A chemistry professor who is renowned both within and beyond our industry and who must remain anonymous for now due to a current contractual arrangement that prevents him from publicising his engagement with any third party until further notice.

The professor’s collaboration with Elestor has naturally been approved by his current employer and there is no conflict of interest. Elestor expects to be given permission to name the professor later in 2024.


Elestor has attracted a diverse range of investors, including prominent names in the energy sector that are at the forefront of the energy transition, climate-focused investment funds, and government bodies supportive of technological innovations that help steer society towards a sustainable future.



Equinor Ventures invests in and supports innovative companies to shape the future of energy. Equinor Ventures is Equinor’s corporate venture arm dedicated to investing in ambitious early-phase and growth companies.

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Vopak Ventures

With the New Energies, Feedstocks & Sustainability fund, Vopak Ventures focuses on funding ventures facilitating new sustainable solutions in areas such as zero emission fuels, green feedstocks, recycling solutions and flow batteries.

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InnoEnergy is the European company dedicated to promoting innovation, entrepreneurship and education in the sustainable energy field by bringing together academics, businesses and research institutes. InnoEnergy is one of the investors in Elestor BV.

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Invest-NL is an impact investor committed to businesses and projects that will make the Netherlands more sustainable and innovative. Its strategic focus lies on speeding up the transition towards a carbon neutral and circular economy.

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Koolen Industries

The mission of Koolen Industries is to enable everyone to contribute to and participate in the energy transition. Generating clean energy from wind and the sun, and developing solutions that store, transport and deliver this energy, we provide consumers with an autonomous life, independent of the grid.

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Somerset Capital Partners

Somerset Capital Partners is a family owned investment firm active in the fields of private equity, venture capital, public equity and real estate. Key domains include e-commerce, consumer, energy, mobility, life sciences, food, transportation and (logistics) real estate.

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Enfuro Ventures

Enfuro Ventures invests in companies which are active in the field of sustainable energy. Enfuro was founded in the summer of 2013 by Erik Schut and Ruud Rijbroek, two experienced entrepreneurs, who want to seriously contribute to the transition to sustainable energy. Enfuro is one of the investors in Elestor BV.

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Elestor has established a robust ecosystem that is made up of a diverse set of strategic partners. This forms an arena where we cooperate and share insight with industry leaders, research institutions and organizations devoted to the energy transition.


Fraunhofer ICT

Coordinated by the Fraunhofer Institute for Chemical Technology, and funded by the European Union’s Marie-Sklodowska-Curie programme, in the research network »FlowCamp« (MSCA-ITN-2017- 765289), 15 PhD students develop materials for next-generation redox-flow battery systems. Prototypes developed in the project will be tested using the cutting-edge facilities of the German-funded (19 million €) RedoxWind campus at Fraunhofer ICT.

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The Ørsted vision is a world that runs entirely on green energy. Ørsted develops, constructs, and operates offshore and onshore wind farms, solar farms, energy storage facilities, renewable hydrogen and green fuels facilities, and bioenergy plants. Moreover, Ørsted provides energy products to its customers. Ørsted is the only energy company in the world with a science-based net-zero emissions target as validated by the Science Based Targets initiative (SBTi), and Ørsted aims to deliver a net-positive biodiversity impact from all new renewable energy projects it commissions from 2030 at the latest.

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Royal Vopak

Royal Vopak is the world’s leading independent tank storage company. We store vital products with care. With over 400 years of history and a focus on sustainability, we ensure safe, clean and efficient storage and handling of bulk liquid products and gases for our customers. By doing so, we enable the delivery of products that are vital to our economy and daily lives, ranging from chemicals, oils, gases and LNG to biofuels and vegoils. We are determined to develop key infrastructure solutions for the world’s changing energy and feedstock systems, while simultaneously investing in digitalization and innovation. Vopak is listed on the Euronext Amsterdam and is headquartered in Rotterdam, the Netherlands.

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Eindhoven University of Technology

Membrane Materials & Processes

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TU Delft

The Technical University of Delft is the oldest, largest and most comprehensive university of technology in the Netherlands. On a structural basis, TU Delft collaborates with other international research institutes and has partnerships with governments, industry partners and companies from the small and medium business sectors. TU Delft ranks 52nd on the 2019 QS World University Rankings overall, and ranks 13th worldwide among the field of Chemical Engineering. The research groups of David Vermaas and Willem Haverkort at TU Delft collaborate with Elestor in the MELODY project, for developing membrane-free H2-Br2 redox flow batteries.

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Founded in 1912, Technion – Israel Institute of Technology is Israel’s first university. Today, Technion is acclaimed as the source of ingenuity behind Israel’s status as the world’s “Start-Up Nation”. Technion innovation has a high global impact in areas including life-saving medicine, sustainable energy, water conservation, computer science, and nanotechnology. Technion, with 18 faculties and more than 50 research centers, offers degrees in science and engineering, architecture, medicine and education.

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University of Exeter

The University of Exeter has a substantial and diverse set of active energy researchers, primarily working in the area of increasing sustainability of energy generation and consumption. Recent work includes energy efficiency, renewable electricity, heat and transport. Research areas include policy & regulation, behaviour of energy consumers, ecological impacts of energy usage, engineering around new solutions in multiple technology areas. technologies covered include PV, concentrated PV, solar thermal, wave energy, tidal energy, floating and fixed offshore wind energy, biomass as well as smart grid and system flexibility.

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ETH Zürich

Freedom and individual responsibility, entrepreneurial spirit and open-​mindedness: ETH Zurich stands on a bedrock of true Swiss values. Our university for science and technology dates back to the year 1855, when the founders of modern-​day Switzerland created it as a centre of innovation and knowledge. At ETH Zurich, students discover an ideal environment for independent thinking, researchers a climate which inspires top performance. Situated in the heart of Europe, yet forging connections all over the world, ETH Zurich is pioneering effective solutions to the global challenges of today and tomorrow.

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Energy Storage NL

‘Energy Storage NL’ interconnects enterprises, knowledge institutes, government and financial institutes, in order to support creation of sustainable business cases for energy storage, which contribute to a successful transition to a clean, reliable and affordable energy supply.

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Rijksdienst Ondernemend NL

The ‘Rijksdienst voor Ondernemend Nederland (’ stimulates the Netherlands with sustainable, agricultural, innovative and international enterprising, by means of subsidies, identification of business partners, knowledge and to comply with laws and legal instructions.

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International Flow Battery Forum

The purpose of the IFBF is to raise the profile of flow batteries as a crucial technology within the electrical energy storage sector.

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TFP Hydrogen

We are TFP Hydrogen Products, specialists in the manufacturing and development of electrochemical materials. We produce a wide selection of materials for hydrogen technologies including water electrolysis materials and catalysts, coated electrodes and GDL substrate for fuel cells. Our company is built on our knowledge and expertise in electrochemistry and nano materials, and we pride ourselves on translating this into effective solutions for our customers. We are continually extending our development, production and analytical facilities to further improve our capabilities, enabling effective material design and smooth scale up from concept to production.

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Energystorage ICL

From raw materials to cutting edge research, ICL is dedicated to developing advanced bromine based technologies that are set to become the new force in the field of energy storage.

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VERBUND as a shaper of the future of energy. Ever since its founding as Österreichische Elektrizitätswirtschafts-AG in 1947, VERBUND has been co-shaping the future of energy: Even back then we set our sights on hydropower and, hence, renewable energy sources. Today, after more than seventy years, VERBUND is Austria’s largest and climate-friendliest electricity producer. Close to 100% of our electricity is generated from hydropower, supplemented by wind and thermal power.

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Gelderland Valoriseert

The mission of ‘Gelderland Valoriseert’ is to support and strengthen the innovative abilities in the region. This goal is achieved by offering a variety of facilities to entrepreneurs, students, researchers and others who have innovative ideas.

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Energy storage is the Holy Grail in the growth of renewable energy and the transition towards a clean, sustainable and reliable energy system. The world’s most advanced flywheel energy storage solution, developed by the Boeing Company in the US, brought to you by QuinteQ Energy B.V., Made in Holland. QuinteQ solves lifetime, reliability and energy density challenges that are not solved by competitors and provides up to 15 times lower storage costs than alternatives.

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Groene Groeiers

Wij zijn ondernemers in Nederland die op een groene manier willen groeien. We willen niet alleen natuur en milieu zoveel mogelijk ontlasten bij onze economische activiteiten. Als het even kan, willen we met ons product of onze dienst ook bijdragen aan een betere en leefbare wereld.

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