Interchange Recharged

What two decades of flat demand means for a grid now expected to double in size

The US went from essentially zero load growth for twenty years to 3% national growth almost overnight. The supply chains, permitting pipelines, engineering workforce and regulatory processes were all calibrated for a different world. Bridget van Dorsten is joined by Tom Falcone, President of the Large Public Power Council, representing the 30 largest publicly owned utilities in the United States, collectively owning around 85% of public power assets and currently serving roughly 18% of all US data centre load.

Tom explains what makes public power structurally different from investor-owned utilities: locally governed, not-for-profit, and built to minimise cost rather than earn a return on equity. That governance model turns out to matter a great deal when trillion-dollar hyperscalers come looking for power. Public power utilities have no financial incentive to favour their own assets over a customer's, and their local accountability makes deal-making faster and more direct.

Bridget and Tom also work through the mechanics of how the industry is actually responding. Large-load tariffs are reshaping the interconnection queue, forcing hyperscalers to make long-term financial commitments rather than reserving capacity for free. About two thirds of speculative requests disappear once real commitments are required, which tells you something about the gap between announced demand and real demand. LPPC members are nonetheless planning to add around 60GW of new generation over the next ten years to meet load that is forecast to grow from 4GW to 18GW of data centres in their territories alone, in just five years.

The episode also tackles private use rules, a Treasury regulation from 25 years ago that nobody expected to become a bottleneck for the AI era, the capacity factor realities that make peak-day power so much harder to deliver than annual energy, the nuclear question and why federal involvement is probably unavoidable if the US wants to build at scale, and where CCS can and cannot realistically be deployed.
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Carbon capture and storage has long been framed as a clean technology that’s forever five years away. Bridget van Dorsten speaks with Tim Vail, CEO of ION Clean Energy, to explore why a surge in AI data-centre demand is reshaping the market for decarbonised gas – and how viable a solution it really is.
Tim argues we’ve entered a buyer-led era for carbon capture, driven by hyperscalers like Amazon, Google and Microsoft who need 24/7 power fast - but are still committed to climate and decarbonization goals. That creates a new question for the energy transition: can natural gas + CCS deliver competitive renewable energy-level carbon intensity, while supporting grid resilience and scaling quickly enough for near-term energy projects?
A big part of the conversation is about measurement and credibility. Tim explains how “carbon intensity” has to be assessed across the full value chain - from wellhead to electrons - including methane leakage. The rise of methane monitoring (ground, aircraft and satellite) and verification systems are helping utilities and buyers prove emissions performance, which is increasingly essential for energy finance, green finance, and corporate reporting. How does it work?
Plus, Tim and Bridget debate the economics. Hyperscalers don’t buy “dollars per ton of CO₂ captured” - they buy power. Tim breaks down what CCS can add on a $/MWh basis, how incentives like the US 45Q tax credit can influence the cost, and why execution (getting projects financed and to final investment decision) is now the real bottleneck. Along the way, Bridget and Tim place CCS in the broader clean firm competition set, including nuclear, hydrogen, geothermal, and solar energy plus batteries, and what this means for future energy predictions and energy policy.
The big question: is CCS at last moving from concept to commercial scale - not because the chemistry suddenly changed, but because demand, verification, and project finance finally might be aligning?

About Interchange Recharged
Interchange Recharged is the Wood Mackenzie podcast exploring the technologies, markets and energy policy decisions shaping the future of energy - from clean tech and clean technology to infrastructure, grid resilience, and the financing models behind the next wave of decarbonisation.
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After more than a decade of flat demand, the US power sector is now facing explosive growth, arriving faster than grids, generation, and transmission can be built. In this episode, Interim host of Interchange Recharged Bridget van Dorsten is joined by Chris Seiple, Vice Chairman of Power & Renewables at Wood Mackenzie, to unpack one of the defining challenges facing the modern energy system: how utilities, developers, and policymakers are responding to an unprecedented surge in electricity demand driven by data centres, AI, and reshoring manufacturing.
Bridget and Chris explore what makes this moment different, why planning cycles are colliding with short technology investment horizons, and how this mismatch is forcing a fundamental rethink of how the power business works, from energy policy to energy finance. The main point is that the difference between regulated and deregulated markets is widening, as vertically integrated utilities strengthen their advantage in managing large loads.
New mechanisms like large-load tariffs are reshaping rate design, investment risk, and affordability - Chris explains how. Plus, deregulated markets may be approaching a tipping point, as traditional price signals struggle to accommodate demand arriving at this scale and speed. What does it all mean for energy?
Crucially, the episode looks beyond the immediate crunch to the longer-term implications for the energy transition. From renewable energy and solar energy pipelines to grid resilience, transmission innovation, and behind-the-meter solutions, this demand boom could become a powerful catalyst for clean tech, clean technology, and energy innovation, even as subsidy regimes change and capital costs rise.
The discussion also touches on the role of hydrogen, nuclear, and emerging grid technologies in supporting future energy projects, and why this period of rapid load growth may ultimately accelerate decarbonisation rather than slow it. If you’re tracking climate policy, climate change, green finance, and long-term energy predictions, this episode is for you; hear why today’s data centre boom could shape the next several decades of the power system.
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US data centre announcements are averaging 435MW a month, and there’s around 175GW of large-load capacity already committed or under construction. AI hyperscalers are looking for innovative ways to meet their energy demands. It’s one of the biggest infrastructure challenges in energy right now: how to deliver reliable, fast power without derailing climate and decarbonisation goals. Joining interim host Bridget van Dorsten is Akhil Batheja, Director of Technology Strategy at Bloom Energy, to unpack why fuel cells have moved from “interesting clean technology” to the epicentre of the data-centre power conversation - and what that shift means for utilities, energy projects, and energy policy.
Together they discuss how solid oxide fuel cells differ from turbines, engines and batteries - from efficiency and permitting advantages to “Lego block” scalability - and why “time to power” is becoming the defining metric for data center owners. Bridget and Akhil explore grid resilience and the realities of operating off-grid campuses, how fuel cells can handle spiky AI workloads using supercapacitors, and why a future high-voltage DC architecture could reshape data-centre efficiency. Finally, they look at pathways to cleaner fuels, including hydrogen, renewable energy-linked fuels like biogas/RNG, and carbon capture, plus the role of energy finance and green finance in accelerating climate change solutions across the energy transition.
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AI is changing the energy system faster than almost anything we’ve seen in decades. Interim host, engineer and energy analyst Bridget Van Dorsten is joined by Ed Crooks, host of Energy Gang and Vice-chair of the Americas at Wood Mackenzie, for a wide-ranging conversation about what’s really driving energy decisions in 2026. From data centres and “speed to power” to energy affordability and US energy dominance, they unpack why reliability, cost and scale are now front of mind for governments, utilities and technology companies.
Bridget and Ed discuss which technologies could step up to meet the demand, from long-duration storage and advanced nuclear to geothermal and grid-enhancing technologies, and whether AI itself could help accelerate innovation across the energy system. Then they debate the costs; how much does AI really cost us in emissions and capital that could arguably be better spent elsewhere. Are data centres out-competing the energy transition for capital and grid access? And what happens if today’s AI investment boom starts to cool, or the bubble bursts?
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