Podcast Episode Summary

Podcast: New Books Network
Host: Michael Simpson
Guest: Dr. Thomas Manuel Ortiz
Book Discussed: Why We Struggle to Go Green: Hard Truths about the Clean Energy Transition (Texas A&M Press, 2025)
Date: December 24, 2025

Overview

This episode features Dr. Thomas Manuel Ortiz, an experienced energy engineer, author, and independent researcher, discussing his book "Why We Struggle to Go Green: Hard Truths about the Clean Energy Transition". The interview explores the challenges of the clean energy transition, technical and policy barriers, the limits of current approaches, and the importance of resource realism in climate discussions. Ortiz emphasizes there is no single solution, and profound lifestyle and policy changes are necessary to address environmental and energy challenges.

Key Discussion Points and Insights

Intended Audience for the Book

• Dr. Ortiz aimed his book at readers "interested in more than what they might read in mass media journalism and yet are not confident enough to tackle some of the academic literature" (02:50).
• The book targets that "sweet spot between research and journalism" to reach readers from a broad range of backgrounds, not just those with technical educations.

The Nature of Energy Transitions

• No Hard End Point:
  Ortiz explains, "There really isn't an end point. We've never really made a hard transition... all these old energy sources are still in use." (03:57)
• The history of human energy use is a layering process, not a linear replacement.

Defining Energy Density

• Energy Density Defined:
  "Energy density is the amount of usable energy you can harvest from a given amount of material..." Fossil fuels are highly energy-dense due to geological processes concentrating energy over millions of years. Solar is abundant but "diffuse," making it harder to harvest efficiently (05:32–07:32).

Solar and Wind: Not a One-Source Solution

• Ortiz values solar and wind but warns against "the belief that there is one best energy source..." (07:52).
• Solar "probably not going to be very useful for transportation... the density ... just isn't there..." but could be "good for things like ocean going vessels" if slower speeds are acceptable.

Texas and the Political Economy of Wind

• Texas dominates wind power due to early 2000s policy decisions, infrastructure investment, and support for onshore wind.
• "It was a policy decision... good for the farmers, good for business, cities needed electricity—win win for everyone." (09:13–11:47)
• Offshore wind faces local opposition, especially near populated or scenic areas.

National Grids and the Challenge of Decentralization

• Ortiz outlines technical, economic, and equity challenges in decentralizing the electric grid (12:29–15:51).
• Technical: The grid was built for one-way power flow; massive investment required to upgrade for two-way, decentralized sources.
• Equity: Risks of "Balkanizing" the grid, leading to wealthier areas going off-grid and poorer communities being left behind.
  "I don't think that's a very just way to bring us forward..." (15:51)

Nuclear Power: Potential and Problems

• Pro-nuclear stance: "Nuclear fission can be a very valuable ... source of electricity production." (16:15)
• U.S. made early mistakes by copying submarine reactor designs for civilian use, not optimizing for land-based electricity.
• Nuclear Waste Problem:
  "We still have not sequestered any of the high level waste ... there's a huge political ... and social problem, in addition to a technical problem." (16:15–19:49)
• Potential exists via new designs (molten salt reactors), but it remains expensive and faces social resistance.

Role (and Limits) of Artificial Intelligence

• Ortiz is skeptical that AI will help the green transition: "I do not. I am fairly dismissive of many of the trends that people are talking about..." (22:25–25:02)
• AI and large data centers increase energy (and water) demand: "We're going backward when ... trying to double or triple the size of the electricity generation system to support these tools..."
• Predicts much of the hype will fade.

The Energy-Water-Food Nexus

• "There is an intimate connection among those three commodities. Energy cannot be produced without water. Water cannot be produced without energy..." (25:37–28:12)
• Large energy systems, especially data centers, require enormous cooling, mainly via water — which competes with basic public needs.

Jevons' Paradox

• Definition and Example: Increasing efficiency tends to increase, not decrease, resource consumption (28:42).
• "If something is expensive, people won't waste it. If something is cheap, there's very little incentive to worry about using it in ... responsible ways."
• Cautions that "essentially free" energy would just shift waste to other resources.

Demand Side Management

• "Demand side management is... we flip the question and we ask how can we curtail our usage or shift that usage..." (32:08)
• Emphasizes conservation (e.g., higher home temps in summer, shifting appliance use).
• "But... there are no silver bullets, there is no panacea. Demand side management can't solve all of our problems."
• Smoothing demand only goes so far without true reduction.

Limiting Energy Demand Growth

• Policy leaders drive growth in areas like AI and cryptocurrency, which Ortiz says undermine sustainability (35:07).
• Suggests governments can and should set policies (via "subsidies and taxation schemes") to limit resource-intensive tech.
• Space tourism and similar trends are criticized for being poor uses of resources when major infrastructure needs go unmet.

Material Limits

• All Earth's materials are finite: "What we have is what we have to work with... This is a one way street." (37:49–39:37)
• Over time, resource extraction will become less efficient and more damaging.

Economic Constraints of Transition

• The U.S. faces national debt and potentially $2 trillion or more to update energy infrastructure (40:02).
• Advocates for intermediary strategies, e.g., synthetic fuels (using captured CO₂ and green hydrogen), because "the economic system won't support" grand transition projects quickly.
• "We will have to come up with more conventionally economical ways to get started." (42:42)

Notable Quotes & Timestamps

• "There really isn't an end point. We've never really made a hard transition... all these old energy sources are still in use." — Dr. Ortiz (03:57)
• "Energy density is the amount of usable energy you can harvest from a given amount of material..." — Dr. Ortiz (05:32)
• "I do not subscribe to the belief that there is one best energy source that we need to focus on." — Dr. Ortiz (07:52)
• "It was a policy decision... good for the farmers, good for business, cities needed electricity—win win for everyone." — Dr. Ortiz (09:13)
• "I don't think that's a very just way to bring us forward..." [on the risk of inequity in decentralized grids] — Dr. Ortiz (15:51)
• "We still have not sequestered any of the high level waste ... there's a huge political problem and a social problem that has to be solved in addition to a technical problem." — Dr. Ortiz (16:15)
• "I do not. I am fairly dismissive of many of the trends that people are talking about... That is not going to save the world." — Dr. Ortiz (22:36)
• "There is an intimate connection among those three commodities. Energy cannot be produced without water. Water cannot be produced without energy..." — Dr. Ortiz (25:37)
• "Jevons paradox is alive and well in every sector of the economy." — Dr. Ortiz (28:42)
• "Demand side management, useful and important, but not a magical solution to our supply problems." — Dr. Ortiz (32:08)
• "Are we really in bad need of having a nuclear reactor on the moon? Or should we be spending our time and effort refurbishing our terrestrial energy infrastructure first?" — Dr. Ortiz (35:07)
• "We have a finite supply of all materials... This is a one-way street." — Dr. Ortiz (37:49)
• "We will have to come up with more conventionally economical ways to get started." — Dr. Ortiz (42:42)
• "There are no magical solutions ... At some point we simply have to decide that we will be satisfied doing less and having less energy per person." — Dr. Ortiz (42:49)
• "We use 36% of the world's resources in the United States and we're only 4% of the population. That cannot continue." — Dr. Ortiz (43:50)

Final Insights and Recommendations

• Ortiz urges realism and modesty in technological optimism: "There are no magical solutions to these problems."
• Major foundational change must come from consuming less and reorienting societal values, not just finding new energy sources or efficiency gains.
• Readers can follow Ortiz's ongoing commentary about resources and sustainability on his Substack newsletter: Resource Realism (44:39).

Timestamps for Important Segments

| Timestamp | Segment | | ---------- | --------------------------------------------------------------- | | 02:50 | Target audience for the book | | 03:57 | Why energy transitions aren’t clean cut | | 05:32 | Definition and importance of energy density | | 07:52 | The limits of solar and wind | | 09:13 | Policy roots of Texas wind power | | 12:29 | Challenges of grid decentralization and equity | | 16:15 | Potential and pitfalls of nuclear energy | | 22:36 | Ortiz's critique of AI and its energy impact | | 25:37 | Energy, water, and food interdependence | | 28:42 | Jevons Paradox in energy efficiency | | 32:08 | Demand side management explained | | 35:07 | Critiquing AI, cryptocurrency, and policy priorities | | 37:49 | The finite nature of Earth's material resources | | 40:02 | Economic and policy constraints of transition | | 42:49 | Final thoughts: The necessity of using less, not just better | | 44:39 | Resource Realism Substack for further information |

Tone and Style

Ortiz maintains a pragmatic, cautiously optimistic tone rooted in both technical rigor and concern for fairness and equity. The discussion is conversational and insightful, blending practical engineering knowledge with systems thinking and a touch of gentle urgency.

For More

Newsletter: Resource Realism on Substack
Book: Why We Struggle to Go Green: Hard Truths about the Clean Energy Transition (Texas A&M Press, 2025)