Andy Marsh has served as CEO of Plug since April 2008, guiding the company’s transformation into a global leader in the hydrogen economy. Under his leadership, Plug has built the industry’s first vertically integrated green hydrogen ecosystem—spanning production, storage, delivery, and power generation—to help customers decarbonize at scale and achieve energy independence. A forward-thinking executive with deep technical expertise and a strong commercial focus, Marsh has led Plug’s strategic evolution from a fuel cell pioneer to a full-spectrum hydrogen solutions provider. His vision and leadership have positioned Plug at the forefront of the global energy transition, delivering breakthrough technologies and building long-term partnerships with industry leaders like Amazon, Walmart, and Home Depot. Prior to Plug, Marsh was co-founder and CEO of Valere Power, a power solutions company serving the telecommunications industry.

Under his leadership, Valere grew into a profitable global operation with more than 200 employees and $90 million in revenue, ultimately leading to its acquisition by Eltek ASA in 2007. During his tenure, Valere earned numerous accolades, including the Tech Titan Award and Red Herring’s Top 100 Innovators. Marsh is a recognized thought leader in the hydrogen and clean energy sectors. He is the former Chair of the Fuel Cell and Hydrogen Energy Association (FCHEA), a member of the Hydrogen Council, and serves on several boards, including GEVO, the UAlbany Economic Advisory Board, and the Northern Ireland Delegation.

He holds a Master’s in Electrical Engineering from Duke University, an MBA from Southern Methodist University, and a Bachelor’s degree in Engineering from Temple University.

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Alex Tancock is the CEO of InterContinental Energy, a global leader in large-scale

green hydrogen development who has been at the forefront of the industry for more

than 10 years. Under his leadership, the company has pioneered a portfolio of

groundbreaking projects, with its three flagship projects attracting partnerships from

some of the largest names in energy.

With backing from major institutional investors like GIC and Hy24, InterContinental

Energy has established itself at the forefront of the green molecule sector. The

company’s innovative team and approach extends beyond project development, and

into giga scale enabling technology through its patented P2(H2)Node TM architecture.

Alex's expertise and strategic insights make him a significant voice in the energy.

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As The Green Steel Challenge wraps up an incredible second season, hosts Astrid, James, and Mike take a look back at the biggest moments, key insights, and game-changing innovations that have shaped the conversation on the future of sustainable steel.

From breakthrough technologies to bold industry commitments, this season has featured some of the most influential voices in the field.

What have we learned? What challenges still lie ahead? And what’s next for the industry? 

Join us for a reflective discussion about the season’s biggest takeaways and a look at what’s coming in the world of green steel.

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ResponsibleSteel is a global, not-for-profit organisation created to maximise steel’s contribution to a sustainable world. Working collaboratively with its members, it has developed an independent standards and certification programme for steel via a process that uses the ISEAL Codes of Good Practice as a reference. Together, they are setting the global standard for responsibly produced net-zero steel.

Today, we sit down with Annie Heaton to explore how credible standards and collaborative action can drive real change in the steel industry.

With over 30 years in sustainability, Annie brings a wealth of experience to the table. From leading ArcelorMittal’s sustainability agenda to pioneering green initiatives at RES Group, she’s been at the forefront of environmental progress across sectors.

We’re thrilled to have her join the conversation on building a more sustainable future.

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Accurately measuring or calculating GHG emissions in a standard manner is critical in any decarbonisation process. Today, we speak with Adina Renee Adler, Executive Director of the Global Steel Climate Council (GSSC), a non-profit organisation aiming to establish such a standard within the global steel industry. She describes the extremely tricky process of emissions measurement, the pitfalls involved and how this space might develop. We also have a fresh perspective on how the Green Steel Challenge is developing around the world.

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Today, Sanjiv Lamba, CEO of Linde, joins us for an engaging conversation! Linde, a global leader in industrial gases and engineering, is at the forefront of developing solutions that drive productivity while supporting sustainability and decarbonisation efforts worldwide.

From chemicals & energy to manufacturing, metals, and mining, Linde’s expertise spans a variety of industries. Their advanced gas processing technologies are helping businesses improve efficiency, expand operations, and reduce emissions.

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Hydrogen is expected to be a key factor not only in steel industry decarbonisation but in much of manufacture and transportation, too, where the use of coal or hydrocarbons has previously been prevalent. Developing scalable technologies and funding the capital required for future hydrogen supply is very much a key to the Green Steel Challenge and the industry in general. In this episode, we talk to Pierre-Etienne Franc, co-founder and Chairman of FiveT Hydrogen, which is the world’s largest fund dedicated to low-carbon hydrogen infrastructure. The challenges and their solutions are eloquently described and discussed, and some very interesting conclusions are drawn as to how the future of Green Steel may look.

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Much of the Green Steel Challenge is about reducing the amount of CO2-emitting coal used in the blast furnace to reduce iron ore. However, carbon itself is an essential component of steel, and this is an issue in EAFs where coke also usually has to be added to obtain the required quality of steel. 

In this episode, we chat with John Mellowes, Cofounder of BioCarbon, an Australian start-up that takes waste biomass resources such as woodchip and sawmill waste and coverts it to a range of biocarbon products that can be used in heavy industries such as steelmaking using an innovative pyrolysis technology.

Tune in to hear how their vision is reshaping the future of steel production.

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We welcome Nicole Voigt, Managing Director and Partner at the Boston Consulting Group known as BCG. Nicole is a member of the leadership team of the Materials & Process Industries practice area. She is the global lead for the metals topic for the firm and has deep expertise in working with clients in the steel and copper industry. Nicole also provides thought leadership to the steel industry regarding trade policies and their implications, as well as the decarbonisation of the industry in light of global climate considerations.

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In this episode, we welcome George Adams, CEO and President of SA Recycling. With more than 140 locations, SA has the largest network of scrap metal facilities in the United States and is one of the world’s largest recyclers. He is also on the divisional board of The Bureau of International Recycling, known as the BIR.

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