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Topic: Renewable Energy

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[Episode #280] – Statistical Review of World Energy 2026

Jul 15 2026

The Statistical Review of World Energy 2026 is out, offering the first complete look at global energy data for 2025. The report's 75th edition, now presented in partnership with the energy think tank Ember, reveals a year in which demand for every form of energy hit a new record high.

But growing overall demand, even for fossil fuels, doesn't mean the energy transition isn't happening. Renewables grew more than any other form of energy for the first time outside of a recession, with solar power accounting for 72% of the increase. And global electrification reached a tipping point, with electricity demand growing 3%, faster than energy supply overall. China alone added the equivalent of Germany's entire annual electricity consumption in a single year. These are just a few of the indications that the future of global energy use is increasingly electric, even as regional paths differ.

In 2025, rising electricity demand was met entirely by low-carbon sources, with renewables and hydro overtaking coal as the largest source of generation. Fossil generation fell overall, demonstrating that fossil fuels are being substituted rather than supplemented.

Solar and storage are clearly taking the lead in the global energy system, and they're not looking back, as global battery storage capacity grew 66% last year alone. Solar already produces more electricity than gas in major parts of the world, and its lead in power generation will only grow.

In this episode, we are joined by Aditya Lolla, Interim Managing Director at Ember, and Euan Graham, Senior Electricity and Data Analyst at Ember and a lead author of the report, to share the key findings from this new update on all the energy data that matters.

We'll dig into the report's new total energy supply measure, which we explored in Episode #259. We'll hear how China's road fuel demand is now falling, redefining the assumed long tai

Guest #1:

Aditya Lolla is Interim Managing Director and Asia Programme Director for Ember.

Aditya Lolla is Interim Managing Director at Ember, the global energy think tank. Over the past nine months, he has led the organisation while continuing to shape Ember’s work on Asia. He was previously responsible for developing Ember’s strategy and workstreams in Asia, building Ember’s data-led research portfolio on the region and leveraging it to support governments across the region in accelerating the clean energy transition. His work focuses on how clean electricity, electrification and energy security are reshaping energy systems globally.

Earlier in his career, he managed large renewable power projects that covered about 50,000 homes in India and led on a World Bank funded project to develop new bioenergy technologies. He holds a Master of Public Policy from the University of Oxford and an MSc in Sustainable Energy Systems from the University of Edinburgh.

On LinkedIn: http://www.linkedin.com/in/adityalolla

On the Web: https://ember-energy.org/people/aditya-lolla/

Guest #2:

Euan Graham is Senior Electricity and Data Analyst for Ember.

Euan re-joined Ember in 2024, having been part of the original Ember team when it was founded. He is part of the Global Programme team, where he leads work on electrification.

He has been an author for several of Ember’s flagship reports, including the Global Electricity Review and China Energy Transition Review, and will be a lead author of the Statistical Review of World Energy, in partnership with the Energy Institute.

Euan holds a masters degree in Physics from the University of Oxford, where he specialised in analysing global climate models. In previous roles, Euan led work on oil and gas phaseout at the independent energy thinktank E3G, and on electricity market reform at Citizens Advice, the consumer advocate for the energy sector in England and Wales.

On LinkedIn: https://www.linkedin.com/in/euan-graham-783774111/).

On the Web: https://ember-energy.org/people/euan-graham/

Geek rating: 6

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[Episode #279] – Debottlenecking Europe’s Grid

Jul 1 2026

Mini Episode

Right now, Great Britain has more than enough new solar projects waiting to be connected to its distribution grid to meet its 2030 renewable energy target.

Italy and Poland could reach half their 2030 solar targets just by connecting the solar already sitting in their queues.

Across just eight European countries, there's a whopping 375 GW of wind and solar PV projects, and an even larger 455 GW of battery storage projects, just languishing in connection queues. Together, these wind, solar and battery resources are roughly equivalent to the entire generation capacity of those countries.

These are the shocking findings from a new study commissioned by the European climate nonprofit Beyond Fossil Fuels. Its estimates are deliberately conservative: the study values the trapped clean energy projects at around €100 billion, with the real total almost certainly higher. In this episode, we welcome Tara Connolly, their Programme Lead for Energy Markets and Grids, to share what the report found and learn what can be done about this sad state of affairs.

And the crunch isn't only on the supply side. Data centers are now muscling to the front of the same queues. In Ireland, they already consume half of greater Dublin's electricity, while households' EV chargers, rooftop solar, and home batteries wait behind them.

It will not surprise our longtime listeners at all to learn that unlocking all this mostly comes down to regulation, with many of the fixes already on the books, just not enforced.

Guest:

Tara Connolly is Programme Lead for Energy Markets and Grids with the NGO Beyond Fossil Fuels, where she leads work on delivering the grids and market rules necessary to phase out fossil fuels and ramp up renewables and clean flexibility. She has almost 15 years of experience in EU energy policy and campaigns, and has worked in the past for Greenpeace, Friends of the Earth and Global Witness.

On Bluesky: @taraconnolly.bsky.social

On LinkedIn: @tara-connolly-EU

On the Web: https://beyondfossilfuels.org/

Geek rating: 7

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[Episode #278] – Enhanced Geothermal Energy

Jun 17 2026

Mini Episode

It's taken a very long time to arrive, but next-generation geothermal power is finally becoming a commercial technology. Even though the virtues of geothermal have long been known and appreciated as clean, low-impact, and capable of running continuously, the few conventional geothermal installations in the US operating for decades supply less than half a percent of the nation's electricity. The promise of next-generation, "enhanced" geothermal, which we discussed back in Episode #248, is that it can be used almost anywhere. But business and technical challenges have held it back.

Until recently, that is. Now, several companies have overcome those challenges and are hard at work on new projects in the US and elsewhere, including Fervo Energy's Cape Station project in Utah, which is expected to begin delivering power this year and expand to 500 MW by 2028.

And the resource is significant: According to the IEA, the technical potential for next-generation geothermal wells less than 5 km deep in the United States is greater than 7 terawatts, a number that's more than five times the nation's total existing electricity generation capacity. The US Department of Energy projects that as much as 300 GW of that could be economically deployed by 2050, enough to meet up to 40 percent of anticipated demand growth. Some studies suggest that if new data centers are sited strategically, geothermal could power all of them. And costs are coming down fast. The IEA estimates they could fall by as much as 80 percent, which would make geothermal cost-competitive across the US. All that development would also create or preserve hundreds of thousands of jobs, many using skills that transfer directly from oil and gas extraction and fossil power generation.

To lay out the opportunity, the obstacles, and the state of the art in enhanced geothermal, we are pleased to be joined by Dr. Emily Pope, a senior fellow at the Center for Climate and Energy Solutions. Her report, Drilling Down—What it Will Take to Harness the Potential of Next-Generation Geothermal, was published in April and offers a comprehensive review of the sector. So if you gave up on geothermal years ago, this episode will show you what's changed.

Guest:

Dr. Emily Pope is a senior fellow at the Center for Climate and Energy Solutions (or C2ES), a nonprofit organization that works to advance durable and effective climate policy. Emily is part of a team that examines technological solutions that support decarbonization, and leads their work on geothermal systems, carbon management, and critical minerals. She has a PhD in geological and environmental sciences, and spent about a decade in academia before transitioning to the policy and science communication space.

Emily on LinkedIn: https://www.linkedin.com/in/emily-pope-seyum/

C2ES on Bluesky: https://bsky.app/profile/c2es.bsky.social

C2ES on X: https://x.com/C2ES_org

C2ES on the Web: https://www.c2es.org/

Geek rating: 7

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[Episode #218] – Accelerating Decarbonization in the US

Feb 21 2024

Mini Episode

How can we accelerate the decarbonization of the entire US economy?

In this episode, we discuss the energy-related decarbonization strategies outlined in a new report from the National Academies, titled “Accelerating Decarbonization in the United States: Technology, Policy, and Societal Dimensions,” with Dr. Sue Tierney, a Senior Advisor at Analysis Group and a renowned expert in energy and environmental economics, regulation, and policy. Dr. Tierney played a key role in the Committee on Accelerating Decarbonization in the United States, which developed and coordinated this landmark study. We explore how decarbonizing the US requires much more than simply substituting renewables for fossil fuels in power generation and EVs for oil-burning cars. A broad array of solutions must be deployed, but they face numerous barriers and risks to implementation.

Trillions of dollars have been allocated for these energy and technology solutions through three significant laws passed in 2022: the Infrastructure Investment and Jobs Act (IIJA), the Inflation Reduction Act (IRA), and the Creating Helpful Incentives to Produce Semiconductors (CHIPS) Act. However, effectively mobilizing these funds requires willing collaboration from a diverse group of local, municipal, and state actors, including elected officials, regulators, agency staffers, as well as community and business leaders.

Listen in to learn why delivering a successful energy transition, along with a host of other benefits such as justice, equity, health, jobs, and sustainability writ large, necessitates understanding the barriers to implementation and identifying the types of policies and programs needed to keep the US on track to achieving net zero.

Guest:

Dr. Sue Tierney is a Senior Advisor at Analysis Group and is an expert on energy and environmental economics, regulation, and policy, particularly in the electric and gas industries. Previously, she was the Assistant Secretary for Policy at the U.S. Department of Energy, and in Massachusetts, she was the Secretary of Environmental Affairs, Commissioner at the Department of Public Utilities, and head of the state’s Energy Facilities Siting Council. She currently chairs the Board of Resources for the Future and the National Academies’ Board on Energy and Environmental Systems, and serves on the boards of other NGOs and foundations. She was a member of the National Academies’ Committee on Accelerating Decarbonization in the U.S. and the Committee on the Future of Electric Power. Her Ph.D. is in regional planning from Cornell University

On Twitter: @analysisgroup

On the Web: Analysis Group

Geek rating: 6

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[Episode #89] – Energy Access and Health

Feb 20 2019

Mini Episode

How can solutions like Project Bo—the solar-powered microgrid we discussed in Episode #85—be extended to help people elsewhere in the developing world who have similar health and medical needs? How can the funding be arranged? How should projects like this be scoped and designed to ensure their long-term viability? What kinds of energy supply and energy consuming devices are best suited to address the needs for remote medical clinics? What kinds of partner organizations can be helpful in implementing these kinds of projects? And what can philanthropic and aid organizations learn from recent experiences to ensure that their support has an enduring impact?

Our guest in this episode not only helped make Project Bo a reality, but she also has a uniquely deep understanding of the intersection of health and energy systems in the developing world. She has worked on energy access in many impoverished countries around the world, and she has a unique perspective on the global state of health and energy, including how and where philanthropic funding for health and energy projects works, and doesn’t work. And you may be surprised to learn which energy solutions she thinks can really make a big difference in women’s health in the developing world today…it’s probably not what you think!

Geek rating: 2

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[Episode #82] – The Business Case for Renewable Energy

Nov 14 2018

Mini Episode

For large corporations, especially those in the industrial sector, buying renewable energy, reducing consumption and becoming more sustainable are surprisingly difficult things to do. Industries like manufacturing, mining, construction, and producing raw materials like cement are all extremely energy intensive, and in many cases, there simply are no good alternatives to using conventional processes based on fossil fuels.

But that doesn’t mean that businesses engaged in those industries can’t find ways to start reducing their own carbon footprints, investing in renewables, investing in research and development into ways of doing more with less, and sharing their knowledge with their peers, in order to accelerate the progress of entire industries. In this episode, we talk with a company that might at first glance seem like an unlikely one to be pursuing sustainability efforts, but which is establishing itself as a leader in corporate sustainability strategies: Ingersoll Rand, a mid-sized manufacturer operating in construction, mining, industrial and commercial markets. You may be surprised at how much they are able to do to become more sustainable and integrate more renewable energy into their operations.

Geek rating: 1

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[Episode #54] – Resource Limitations

Oct 18 2017

Mini Episode

How do we know at what level our consumption is sustainable, and when we’re in planetary overshoot? How do we quantify what the planet’s capacity is to meet human demands, and how much of that capacity is renewable, and how much of it is just being permanently depleted? And once we had a way to quantify that, what would we do with that information? Would we use it to inform our actions and avert overpopulation and disaster? Would we ignore it at our peril? Or would reality just unfold in some messy fashion along a default path somewhere in between? Is a deliberate transition to a sustainable energy system even possible?

Our guest in this episode created a scientific methodology called “ecological footprint analysis,” a kind of ecological accounting, to inform policymakers about our resource demands on the world as compared with Earth’s ability to meet those demands. Earth Overshoot Day, which the Global Footprint Network calculates every year, arrived on August 2, meaning “that in seven months, we emitted more carbon than the oceans and forest can absorb in a year, we caught more fish, felled more trees, harvested more, and consumed more water than the Earth was able to produce in the same period.” After listening to this discussion, you’ll never quite think of energy transition the same way again.

Geek rating: 2

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