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The Energy Transition Show with Chris Nelder

The Energy Transition Show with Chris Nelder

XE Network

Straight talk about the world’s transition from fossil fuels to renewables with energy expert Chris Nelder

341 - [Episode #286] – A Moving Target
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  • 341 - [Episode #286] – A Moving Target

    Doubters of the transition have always been quick to share doom scenarios about grids losing stability once wind and solar supplied a large share of their power. In the Energy Transition Show's early episodes, our host Chris noted how defenders of the status quo "have claimed for decades that the grid can't support more than 3 percent or 5 percent or 20 percent, it's a moving target, of variable renewables without risking blackouts…"
    Years later, reality leaves transition skeptics less and less room to maneuver. So is there really an upper limit on how much wind and solar a grid can handle? In 2025, renewables provided more than 77% of South Australia's electricity generation, nearly half of it from wind. And for half an hour in April 2026, 98.8% of the power on Britain's transmission grid came from zero-carbon sources, by NESO's own measure.
    Certainly along the way there have been blackouts blamed on renewables, such as 2016 in South Australia, or Spain and Portugal in 2025. If you only followed the headlines, you'd think the doubters had been right all along.
    But grid engineers keep learning how to adapt, and the target keeps moving. In this episode of our documentary series, we start with conversations from the show's past and how they connect to recent ones about grid stability, including what the official investigation into Spain's blackout actually found, and how Britain gives its grid inertia without burning fuel.

    Featured in this episode, in the order we hear their conversations, with titles as they were at the time of each recording:

    * Paul Denholm, principal analyst at the National Renewable Energy Laboratory (now the National Laboratory of the Rockies), on Episode #58 (2017)
    * Julian Leslie, Head of Networks and Chief Engineer at National Grid ESO, on Episode #174 (2022), and Director of Strategic Energy Planning and Chief Engineer at NESO, on Episode #245 (2025)
    * Mackay Miller, senior analyst at the National Renewable Energy Laboratory, speaking in a personal capacity, on Episode #2 (2015)
    * Jenny Riesz, Principal at the Australian Energy Market Operator, on Episode #39 (2017)
    * Ivor Frischknecht, former CEO of the Australian Renewable Energy Agency, on Episode #71 (2018)
    * Willie Phillips, Acting Chairman of the Federal Energy Regulatory Commission, at the commission's open meeting on Order 901, October 19, 2023 (“FERC Commission Meeting | October 2023 Open Meeting”). Source: Federal Energy Regulatory Commission. Public domain
    * Leonhard Gandhi, Fraunhofer ISE, from the Energy-Charts Talk “Analyse und Bewertung des Stromausfalls in Spanien und Portugal am 28. April 2025” (1 April 2026). In German, with an English voice-over translation by XE Network.
    * Professor Janusz Bialek of Imperial College London, interviewed by Dr Giordano Scarciotti on his YouTube channel, Prof Gio, in the video “

    Wed, 28 Oct 2026 - 31min
  • 340 - [Episode #285] – Covering Demand Growth

    Over the summer, the IEA projected that carbon emissions from the world's power sector are on track for a new record in 2026. Electricity demand is expected to grow 20% faster than it did a year ago, and this year's gas shock has pushed some countries to use more coal.
    But we're fresh off a new milestone for the energy transition. Last year, wind and solar grew enough to cover virtually all of the world's new electricity demand and fossil power fell, so emissions from power plants didn't rise.
    So was last year a peak we can count on, or simply a pause? Over the Energy Transition Show's history, we've seen carbon emissions stall out before. In 2017, global emissions had barely grown for three years, and some thought that was it. But then they started to rise again.
    How confident can we be that fossil power emissions are truly close to their peak? In this second episode of our documentary series, we follow that question through Chris Nelder's conversations with the analysts who have been tracking it, from 2017 to today. We'll hear the signs of a lasting decline versus a temporary dip, why emerging markets can stop fossil power from growing even if the coal plants they already have don't shut down, and why so much of the answer depends on what China does next.

    Featured in this episode, in the order we hear their conversations:

    * Zeke Hausfather, climate scientist and energy systems analyst at Berkeley Earth, on Episode #40 (2017)
    * Lauri Myllyvirta, Lead Analyst at the Centre for Research on Energy and Clean Air, on Episode #138 (2021) and Episode #271 (2026)
    * Kingsmill Bond, Energy Strategist at Carbon Tracker, on Episode #152 (2021)
    * Tim Gould, co-head of the World Energy Outlook at the International Energy Agency, on Episode #242 (2025)
    * Muyi Yang, Senior Energy Analyst for Asia at Ember, on Episode #260 (2025)
    * Sam Butler-Sloss, Research Manager at Ember, on Episode #260 (2025)
    * Nic Fulghum, Senior Data Analyst at Ember, on Episode #274 (2026)
    * Aditya Lolla, Interim Managing Director of Ember, on Episode #280 (2026)


    Wed, 14 Oct 2026 - 24min
  • 339 - [Episode #284] – Faster Than Forecast

    When we first created the Energy Transition Show in 2015, solar generated about 250 terawatt hours worldwide. That was roughly as much electricity as California used the same year. A decade later, as the energy transition moved ahead, solar generates more than ten times as much, matching the European Union's total electricity demand.
    Though sometimes progress can seem like it isn't happening nearly fast enough. Renewables only edged past coal in 2025, by supplying around a third of global electricity. But everything built over those ten years matters now more than ever. As we reviewed on Episode #272, soon after the US and Israel attacked Iran, the Strait of Hormuz closed, and the aftermath has created a persistent disruption in global energy flows that sent oil, gas and diesel prices surging. Ember's Global Electricity Review, which we covered with Nic Fulghum on Episode #274, found that the growth in solar generation in 2025 alone could displace gas-fired electricity equal to all the LNG exported through the strait that year. Without it, this crisis would be far harder to weather against the reality of constrained fossil fuel supplies.
    For decades, forecasts for where the energy transition would be by now kept coming in low. Researchers from the LUT University team featured on Episode #95 went back through the International Energy Agency's World Energy Outlook reports and found they consistently underestimated solar. The IEA's most ambitious scenario from 2022 had annual solar installations peaking at 657 gigawatts in 2040. By SolarPower Europe's count, the world installed more than that in 2025.
    This is the first in a new documentary series, built from our past episodes, featuring interviews Chris Nelder recorded while the future was still unfolding, often years ahead of the headlines. We start with Episode #200, where Canary Media's Jeff St. John co-hosted. They remembered how bold a name like "Energy Transition Show" seemed back in 2015. Were the forecasters just being too cautious, or were their methods off?
    This year, some are projecting solar installations will fall for the first time in more than twenty years. What should forecasts like that tell us about the road ahead?

    Featured in this episode, in the order they first appear:

    * Jeff St. John, Director of News and Special Projects at Canary Media, in conversation with Chris on Episode #200 (2023)
    * Ryan Wiser, Senior Scientist at Lawrence Berkeley National Laboratory, on Episode #30 (2016)
    * Kingsmill Bond, Energy Strategist at Carbon Tracker, on Episode #108 (2019)
    * Matthew Ives, economist at Oxford's Institute for New Economic Thinking, on Episode #159 (2021)
    * Doyne Farmer, Director of Complexity Economics at Oxford's Institute for New Economic Thinking, on Episode #239 (2024)
    * Gregory Nemet, Professor at the University of Wisconsin–Madison, on Episode #178 (2022)
    * Christophe McGlade, Head of the Energy Supply Unit at the International Energy Agency, on

    Tue, 29 Sep 2026 - 31min
  • 338 - [Episode #283] – Transportation Beyond Electrification

    Transportation continues to electrify, as a quarter of the world's new car market in 2025 was electric, both battery and plug-in hybrids. And this area of the energy transition is already showing up in metrics that matter for the climate. Recent data shows that running a battery electric car on Europe's grid cuts lifetime emissions by more than 70% against a comparable combustion car.
    But even as progress on electrifying transportation continues, many other factors are holding back the deeper decarbonization we need. A switch to EVs won't remove traffic congestion on its own, or change how much of the street a passenger car consumes at the expense of smaller and lighter options. Vehicles turn over far faster than the streets they run on.
    What can make our mobility system sustainable beyond the fuel? This is exactly the tension we were getting at in Episode #96. In this episode we return to our host Chris Nelder's 2019 conversation with Debbie Hopkins, now Professor of the Human Geographies of Mobility at the University of Oxford, who warned everyone working on the technology side. Swap the engine or change the fuel and you end up with the same unsustainable system.
    When Chris and Debbie spoke, electric cars were about one in forty sold worldwide. Even though now it's one in four, that still won't get the job done as the energy transition's final answer. Transportation remains the single largest source of US greenhouse gas emissions, and it will take more than decisions about engines to tackle that.

    Wed, 16 Sep 2026 - 38min
  • 337 - [Episode #282] – Regulatory Moats Around Transmission

    The energy transition calls for more electrification. As transportation, heating, industry, and now power demand from data centers all crowd the interconnection queues, the US needs more transmission than it has built in generations. Even energy transition skeptics can agree on the wires.

    But agreement on the need for more transmission has never been enough to get lines up and running. In 2019, journalist Russell Gold joined us to tell the story of Michael Skelly, who tried harder than anyone. His company, Clean Line Energy, spent a decade developing five major transmission lines to move wind power from the Midwest to the cities that needed it. His flagship line, the 700-mile Plains & Eastern, was fully permitted and offered the Tennessee Valley Authority twenty years of wind power at $18.50 per megawatt-hour, a price even the cheapest coal can't match. But economics aside, TVA walked away and not one of the five lines got built. Gold's book Superpower explains why engineering or economics weren't able to overcome the rules written state by state that build "regulatory moats" around the incumbents and keep the outsiders out.

    Seven years since then, and those moats are where the race to tackle growing power demand is backing up. Recently ERCOT froze approvals of new data-center connections while the state audits an interconnection queue that has swelled to roughly 474 gigawatts of requested power capacity, more than five times the all-time peak power demand on the Texas grid. In Washington, FERC ordered the six regional grid operators it oversees to explain where the transmission for loads like that will come from. The specific fights are new but the overall mechanism is the one Russell Gold mapped with our host Chris Nelder back in Episode #98.

    Since then, Grain Belt Express, the line Skelly had to sell on the way down, has grown into an $11 billion, 800-mile project with $1.7 billion in construction contracts signed. And Skelly has a new company working on the first large-scale connection between America's two big grids, a step toward the concept of Superpower that would tie the country's balkanized regional grids into one that could more readily support the energy transition's future.

    Mon, 31 Aug 2026 - 55min
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