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Topic: Networked Geothermal

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[Episode #248] – The Future of Geothermal

Apr 23 2025

Mini Episode

Although geothermal power plants have operated commercially in various parts of the world for decades, the sector hasn't attracted the investment needed to reduce costs and enable global deployment. But with further development, new methods of harnessing geothermal energy to produce heat and electricity could deliver as much as 800 GW of geothermal power capacity worldwide by 2050. That’s equivalent to the electricity demand of the United States and India combined.

In December 2024, the International Energy Agency (IEA) published "The Future of Geothermal Energy," a report exploring opportunities in this sector.

Our guest today is a lead author of that report. In this conversation, Heymi Bahar, Senior Renewable Energy Analyst with the IEA, discusses geothermal energy’s full technological potential and strategies for unlocking investment in this promising resource.

Guest:

Heymi Bahar is a Senior Renewable Energy Analyst with the International Energy Agency (IEA). Before IEA, Heymi worked as a trade policy analyst at the Organisation for Economic Co-operation and Development (OECD) where he analysed domestic inventive measures for renewable energy sources with possible trade implications. He also worked on cross-border trade in electricity and the development of renewables-based electric power. Heymi graduated from Sabanci University and holds a Master degree on Energy, Resources and Environment from the Paul H. Nitze School of Advanced International Studies of Johns Hopkins University.

On Twitter: @HeymiBahar

On LinkedIn: Heymi Bahar

Geek rating: 4

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[Episode #205] – Rebuilding the Grid from the Bottom-up

Aug 23 2023

Mini Episode

A tsunami of distributed energy resources (DERs) is starting to arrive on the grid. Customers are adopting millions of EVs, rooftop solar systems, battery backup units, and other devices that can dynamically respond to grid conditions. But most utilities are not engaging with this wave proactively. Instead, they’re being reactive, slow, and even resistant to allowing these devices to connect to the grid or participate in transactions.

As we rebuild and transform the grid in the course of the energy transition, we really need to think about how to accommodate DERs. There are manifold reasons to build a decentralized grid from the bottom-up, instead of keeping the conventional, top-down, hub-and-spoke architecture based on the large centralized power plants that we have relied upon in the past. So how do we do it?

Lorenzo Kristov has been agitating for this new architecture for years, frequently issuing white papers and expert testimony to get regulators and others thinking about what the future grid should look like. And his ideas are being taken seriously, because he was a lead designer of the locational marginal pricing (LMP) market on which California’s wholesale power system operates. He has deep expertise in wholesale market design, DER participation in wholesale markets, coordination of transmission-distribution system operations, distribution system operator (DSO) models, distribution-level markets, microgrids, energy resilience strategies, and whole-system grid architecture, among other things. And he has been walking us through his vision for the decentralized grid in previous episodes of our show: #10, #94, and #150.

In today’s episode, Lorenzo rejoins us to build on our previous conversations and share his latest thinking about how to make the new energy transition grid architecture happen. We discuss market design, architecture, procurement, regulatory issues, and related topics, making this episode deserving of a Geek Rating of 10.

Geek rating: 10

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