Redefining Energy

Where Are BESS Making Money? Gerard and Laurent had the pleasure of welcoming Ed Porter Director Europe at Modo Energy for an insightful discussion on battery profitability and the evolving economics of Battery Energy Storage Systems (BESS).  

Modo Energy is a fast-growing data analytics and market intelligence platform helping energy professionals benchmark asset performance, forecast revenues and evaluate investments in renewable energy and grid-scale battery storage.  

Ed outlines three stages in the development of a battery market:Stage 1 – Pre-saturation: Batteries can achieve attractive payback periods, sometimes as short as three years, primarily through ancillary services.
Stage 2 – Wholesale market competition: As ancillary service revenues become more competitive, batteries increasingly rely on wholesale market opportunities, as seen in Australia, Texas and Great Britain.
Stage 3 – Sophisticated grid services: Once wholesale markets become saturated, batteries move towards more advanced and specialised grid services (voltage, inertia...).
  The technology is evolving rapidly, as is the deployment of new battery capacity. This makes future revenues increasingly difficult to predict, particularly because of the cannibalisation effect: as more batteries enter a market, they compete for the same revenue opportunities and can progressively reduce market spreads.  

From Australia to PJM, ERCOT and CAISO, and across Great Britain, Spain and Germany, we explore the fundamentals driving battery profitability in different markets.   With CAPEX around $500,000/MW, a decent return might be in the region of $70,000–80,000/MW. Yet the picture varies dramatically by market. Poland can deliver around $300,000/MW, while ERCOT and Australia's NEM are currently below $30,000/MW.  
These differences highlight why investors need to look beyond headline revenues and consider market structure, competition, saturation, technology and future revenue cannibalisation.  

We also discuss Long Duration Energy Storage (LDES) and explore the deeper market and technological levers that can make batteries a profitable long-term investment.   A compelling conversation on where BESS is making money today—and, perhaps more importantly, where the opportunities may lie tomorrow. 
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There is no shortage of discussion about the role of AI in the energy transition. Yet while many talk about the future of intelligent grids, only a handful of industry leaders are delivering solutions at scale.  
One of them is Alberto Méndez Rebollo—an executive, investor, and entrepreneur dedicated to accelerating the energy transition. Throughout his career, Alberto has held senior leadership positions at Siemens Gamesa, Vattenfall, XCharge, and other organizations, overseeing multi-million-euro initiatives across renewable energy, power grids, and electric mobility.  
Today, as Co-Founder and CEO of Plexigrid, he is leading the development of next-generation technology designed to prepare electricity networks for a rapidly changing energy landscape. Plexigrid, a deep-tech company headquartered in Sweden and Spain, develops intelligent software that helps utilities optimize and digitize electricity distribution networks. At the core of its platform is a real-time digital twin of the distribution grid, enabling operators to monitor capacity, detect anomalies, and make better operational decisions.  
The company's AI-powered technology automatically coordinates energy consumption and manages flexible assets such as EV chargers, shifting demand away from peak periods. This allows utilities to alleviate congestion, increase grid resilience, and unlock additional network capacity—without the need for costly and time-consuming infrastructure upgrades.  
The market response has been remarkable. Operating on a software-as-a-service (SaaS) model, Plexigrid has expanded its commercial pipeline from €8 million to more than €150 million in just four years, consistently winning competitive tenders against some of the industry's most established players.   Its growing client base includes leading utilities and energy innovators, with notable partnerships such as EDP and Piclo focused on advancing real-time grid orchestration. The company has also raised approximately €15 million across multiple funding rounds, providing a strong foundation for continued growth and innovation.  
Beyond the technology, however, this is a story about transformation at warp speed. It is about how critical infrastructure can evolve—not only technically, but culturally—to embrace new technologies and operating models. As electricity networks become increasingly decentralized, digital, and dynamic, organizations like Plexigrid are demonstrating how AI can move from a promising concept to a practical tool that helps utilities adapt, modernize, and thrive in the energy transition.  

“Today’s show is supported by the BMW Foundation Herbert Quandt. The BMW Foundation unites leaders across sectors to develop solutions that foster an innovative economy and a future-proof society. A key focus is "Energy Transition & Climate Change," where the Foundation drives "International collaboration to accelerate the energy transition." With rising energy demands from AI and data centres, new partnerships, effective collaboration, and the exchange of science-based solutions and strategies are essential.”

Recorded at the SolarPower Summit in Brussels this conversation between Laurent Segalen and Jonathan Gifford examines why batteries have become one of the fastest growing and most strategically important technologies shaping the global energy transition. Jonathan Gifford is the co-founder of Climate Copy and a wonderful storyteller.  

Laurent unpacks how rapid battery innovation is transforming electric mobility, renewable energy markets, charging infrastructure, and the future operation of electricity grids.  

It has been only nine years since Hornsdale (Tesla – South Australia) 100MW-130MWh made of EV batteries cracked the code. Six months later in China the Jiangsu Zhenjiang first 100MW LFP battery was installed. In Europe and the US, the first large LFP batteries were installed in 2021-2022. Now, LFP has a 95% market share in BESS around the world. For EVs, it is 55% LFP – 45% NMC (80% in China).  

By the end of 2026, we will reach 500GW globally and great forecasters like Jan Rosenow expect 1,000GW by 2030. We see longer duration and the advent of sodium batteries.  

Laurent outlines why electrification is entering a new phase of acceleration. He highlights how falling battery costs, rapid improvements in electric vehicle technology, and the widening economic gap between electricity and fossil fuels are reshaping expectations across the transport sector. This shift is not limited to passenger cars; it increasingly extends to commercial fleets and heavy-duty trucking, where electric trucks are becoming more competitive thanks to lower operating costs, reduced maintenance needs, and improving charging infrastructure.  

He also discusses the growing importance of stationary battery storage in enabling high-power EV charging, increasing grid flexibility, and supporting higher penetration of renewable energy.  

Finally, he explained why Hydrogen will never work in long haul transportation. Simply too expensive.

Michael Barnard welcomes Cornelis Plet, CTO of Grid Systems Integration at GE Vernova, about the technologies reshaping modern power systems and the practical realities of building an electrified future.  

High-voltage direct current (HVDC) transmission, once a specialist solution for narrow use cases, is now becoming a standard building block of the global grid. Increasingly standardised designs are enabling large-scale transfer of renewable power over long distances, yet the industry is still grappling with how to align control systems and operational standards across different vendors and regions.  

A central theme of the conversation is the rise of grid-forming inverters. As traditional synchronous generation retires and is replaced by wind, solar, and batteries, the grid is shifting from mechanical inertia to power electronics. While technical progress is rapid and new grid codes are emerging, true interoperability between systems remains a work in progress, with different implementations still complicating integration at scale.  

The discussion also touches on geopolitics and market dynamics. Investment patterns are evolving, regulatory environments are uneven across regions, and supply chains are adjusting after a period of rapid expansion. Yet across all of this, one constraint stands out more than any other: people. The shortage of experienced power engineers, particularly in system design, protection, and control, is becoming the defining bottleneck of the transition.  

Ultimately, the episode is not only about HVDC or inverters, but about the broader system that surrounds them—standards, institutions, skills, and the accumulated expertise required to keep a highly complex, rapidly changing grid stable. It is a reminder that the energy transition is as much a human and organisational challenge as it is a technological one.

In March 2026, Laurent was invited by Jan Rosenow at Oriel College, Oxford, for a public debate on the energy transition. Held in the College's historic library, the discussion brought together contrasting perspectives on one of today's defining challenges. Jan Rosenow, Professor of Energy and Climate Policy, is renowned for his work on energy efficiency, electrification, and the transition to net-zero energy systems.

Laurent opened by introducing the "Aristotelian Triangle" of the energy debate—Ethos, Logos, and Pathos—arguing that values, evidence, and emotion all shape how people interpret energy issues. Responding to Jan's distinction between energy addition and energy transition, Laurent made two key points.
First, history shows that energy forecasts have repeatedly underestimated transformative innovations, from shale gas and LEDs to solar, electric vehicles, batteries, and AI-driven data centres. His conclusion: humility is essential when predicting structural change.
Second, Laurent presented his "Diocletian Tetrarchy of Energy," pairing Vaclav Smil with Clayton Christensen to represent continuity versus disruption, alongside Daniel Yergin and Michael Liebreich to illustrate the roles of markets, geopolitics, and industrial transformation. He described himself as roughly 70/30 in favour of technological disruption while acknowledging the inertia of existing energy systems.
The discussion also examined the cost of ideology, arguing that opposition to technologies such as offshore wind or nuclear power can shape investment, electricity prices, and energy affordability. It concluded by exploring industrial policy, energy security, and how nations should balance resilience, competitiveness, and comparative advantage in a changing geopolitical landscape.

Although the formal debate lasted just over an hour, the conversation continued long afterwards. This episode captures part of those fascinating exchanges.