The high-wire act of unlocking clean energy | Jason Huang - TED Talks Daily

Summary

Podcast Summary: TED Talks Daily Episode: The High-Wire Act of Unlocking Clean Energy | Jason Huang
Release Date: January 31, 2025

In this enlightening episode of TED Talks Daily, grid expert Jason Huang delves into the critical need to modernize our electrical power grids to accommodate the burgeoning demand for renewable energy. His comprehensive discourse highlights the challenges of the current infrastructure and introduces groundbreaking advancements poised to revolutionize energy transmission and distribution.

1. The Importance of the Power Grid

Jason Huang opens his talk by emphasizing the pivotal role of the transmission and distribution grid:

"One of the greatest inventions of all times is our transmission distribution grid."
(02:10)

He underscores that the grid is essential for safely and reliably delivering electricity from generation sources to consumers. However, Huang points out that as we accelerate the electrification of everything—from vehicles to industrial processes—the existing grid, largely based on century-old technology, is insufficient to handle the increased load and variability introduced by renewable energy sources.

2. Limitations of Current Conductor Technology

Huang critiques the outdated conductors that have been in use since the early 20th century:

"The real bottleneck in our power grid is actually the conductors."
(03:15)

He explains that traditional conductors, such as the ACSR (Aluminum Conductor Steel Reinforced) used today, suffer from limited capacity and poor efficiency. These conductors, which combine steel for structural support and aluminum for conductivity, are constrained by their inability to handle higher temperatures and increased electrical loads without significant sagging—a common sight during hot summer days.

3. Evolution of Conductor Technology

Progressing through the history of conductor technology, Huang highlights the advancements and persistent issues:

"In the 1970s, our steel industry was able to deliver stronger steel which then can be combined with nailed aluminum. That forms the ACSS conductor."
(05:40)

Despite improvements, the ACSS conductor still faces challenges like thermal expansion leading to excessive sagging. Attempts to introduce first-generation advanced conductors in the 1990s, made from composite materials such as ceramic fiber or glass carbon fiber, were marred by durability and cost issues, limiting their application to niche scenarios.

4. Introducing Next-Generation Conductors

Huang presents a breakthrough solution developed by his company, TS Conductor:

"The next generation of advanced conductors exists. It can triple line capacity at the same time reduce line loss by 50%."
(07:30)

Leveraging cutting-edge material science, TS Conductor's technology replaces the traditional steel core with a carbon composite, significantly enhancing strength and reducing weight. The new conductors feature a continuous seamless thick aluminum sleeve, ensuring full electrical conductivity and corrosion resistance. These innovations collectively address the shortcomings of previous materials, offering higher capacity and greater resilience without the associated drawbacks.

5. Economic and Environmental Benefits

Huang details the economic advantages of adopting the new conductor technology:

"With the strong less SAG TS conductor, you can build these new lines with fewer and shorter structures, creating substantial CAPEX savings that more than offset the modest premium associated with conductors."
(09:50)

By reducing the need for extensive structural support, utilities can achieve significant capital expenditure savings. Additionally, the enhanced efficiency of the conductors leads to a 50% reduction in line loss, translating to immediate cost savings for both grid operators and consumers.

Environmentally, the advanced conductors contribute to substantial greenhouse gas (GHG) reductions:

"We can avoid as much as 500 million tons of greenhouse gas each year because we do not have to do as much compensatory generation."
(11:15)

The lower line losses mean less reliance on backup generation, typically fossil-fuel-based, thereby mitigating emissions. Furthermore, the increased capacity facilitates the integration of more renewable energy sources, amplifying the potential for a cleaner energy future.

6. Real-World Implementation and Success Stories

Huang shares a case study from North Dakota to illustrate the practical benefits:

"In March 2021, we reconducted an 11 mile 230kV transmission line... they were able to save 40% in total project CAPEX because we avoided all the structural retrofit."
(10:45)

This project not only achieved significant cost savings but was also completed a year ahead of schedule, demonstrating the feasibility and efficiency of deploying TS Conductor's technology in real-world scenarios.

7. Vision for the Future Grid

Concluding his talk, Huang paints an optimistic vision for the future:

"We can connect the renewable generation instantly versus the years long wait that we're experiencing today."
(12:20)

He advocates for immediate action to upgrade the power grid, arguing that with available technology, such as TS Conductor's advanced materials, the transition to a sustainable and resilient energy infrastructure is entirely achievable. Huang calls for supportive legislation and policies that incentivize utilities to adopt these innovations, ensuring that the grid evolves in tandem with our growing energy needs.

"Conductors have a design life of 50 to 70 years. Let's upgrade our power grid. Build it better for a clean energy future."
(13:00)

Huang's passionate plea underscores the urgency of modernizing the grid to avoid decades of inefficiency and to pave the way for a sustainable energy landscape.

Conclusion

Jason Huang's compelling presentation in this episode of TED Talks Daily offers a clear roadmap for transforming the global power grid. By addressing the technical, economic, and environmental challenges with innovative conductor technology, Huang provides a tangible solution to unlock the full potential of renewable energy. His insights not only highlight the necessity of grid modernization but also inspire confidence that a cleaner, more resilient energy future is within reach.

Transcript

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Elise Hu (0:48)

TED Talks Daily is sponsored by Capital One. In my house we subscribe to everything. Music, tv, even dog food. And it rocks until you have to manage it all. Which is where Capital One comes in. Capital One credit card holders can easily track, block or cancel recurring charges right from the Capital One mobile app at no additional cost. With one sign in, you can manage all your subscriptions all in one place. Learn more at CapitalOne.comscriptions Terms and Conditions apply. You're listening to TED Talks Daily where we bring you new ideas to spark your curiosity every day. I'm your host Elise Hu. We are still early in the new year and extreme weather and wildfires have already displaced and threatened so many people here in Southern California, which is where I am based. So it is timely to hear from grid guru Jason huang. In his 2024 talk he presses the need to upgrade the power grids to be more resilient in natural disasters and to better support the transition to renewable energy. It couldn't be more important right now. That's coming up.

Jason Huang (2:05)

One of the greatest invention of all times is our transmission distribution grid. It connects electricity generation to electricity consumption safely, reliably resilient against extreme weather conditions and keep our lights on. But if we were to facilitate electrification of everything, this most sophisticated and largest machine on earth is not quite large enough to take on all the renewable generations. From where the sun shines and the wind blows to where people actually live. It does not have the capacity to handle the 2 3rd energy that we consume, not yet in the form of electricity. Without transmission we have no transition. The real bottleneck in our power grid is actually the conductors. Those wires that are carrying electron are based on outdated technology invented in 1908. It has limited capacity and also poor efficiency. The next generation of advanced conductor exists. It has been invented leveraging the best material science today has to offer to build the best conductors. This is what the company I co founded, TS Conductor, is working on. It can triple line capacity at the same time reduce line loss by 50%. The best part is it comes with a green discount, saving utility and their customers money from day one. There aren't many things in our lives that are over 100 years old. So why are we still using and relying on those old fashioned power lines? This is because our utility companies are regulated monopolies with a very conservative culture. To understand today's advanced conductor, let's take a look at yesterday's wires. The original century old technology ACSR conductor, which is still dominant today in our power grid. It has steel wire as a core for structural support and layers of aluminum for electrical connectivity. The steel wire at the time 100 years ago that is wasn't strong enough. So we had to use hard aluminum for strength contribution. The problem is hard aluminum cannot handle high temperature. This limits capacity. In the 1970s, our steel industry was able to deliver stronger steel which then can be combined with nailed aluminum. That forms the ACSS conductor which is capable of high temperature operation for high opacity. The problem is steel expands when hot. This causes excessive sagging. You probably have noticed that our power lines drooping in a hot summer day. And that's why this SAG causes its own set of challenges. In the 1990s, advanced conductor emerged instead of the steel core in the traditional conductors, composite material with lower thermal expansion such as ceramic fiber composite or glass carbon fiber composite are used to replace steel and reduce sag. Unfortunately, our utility industry experience with this group of first generation advanced conductor hasn't been positive. They are known to be delicate, difficult to work with, easy to break with longevity concerns. And they are also very expensive, used for niche applications at best. By 2016, TS technology was developed and commercially deployed. We solved all the problems associated with the first generation advanced conductor. At its source, we design in safety, reliability, longevity, easy installation and maintenance from the start by leveraging effective protection for the pretension carbon core with a continuous seamless thick aluminum sleeve that is also fully conductive. This technology shifted three conductor paradigms. We can run this conductor at high temperature for very high capacity without conductor sagging problem. Because the carbon core has virtually no solmer expansion. We also maximize the aluminum content in the conductor for optimal capacity without the weight penalty in the conductor. This is because the carbon composite core was able to eliminate 80% of the weight of steel. And we can also incorporate the annealed aluminum for best conductivity in the conductor without compromising on Conductor strength because the carbon core is twice the strength of steel. And furthermore, this solution is also corrosion proof. The heat tolerant sag proof feature in this solution makes it much better in terms of surviving wildfires compared to traditional conductor. The strong and compact design also makes it more resilient against extreme wind or ice storms due to climate change. Doing this, we can triple line capacity with the same structure in the power line corridors. At the same time, we can reduce line loss by 50% while essentially eliminating somersag. And the best part is this technology comes with a green discount in addition to green dividend that's associated with line loss reduction. This saves the grid operators and their customers money from day one, even though this advanced conductor has a modest premium compared to traditional conductors. Here's how. When you build new transmission lines, the cost of conductor in the overall project is very minor, about a few percentage points. But the cost associated with structure can be as much as 30%. With the strong less SAG TS conductor, you can build these new lines with fewer and shorter structure, creating substantial CAPEX savings that more than offset the modest premium associated with conductors. There are numerous new transmission lines deploying TS technology that can prove this point. In reconductoring, we replace the wire but reuse the towers. There's even better economics in that situation. We can triple the line capacity without retrofitting any structures for the lowest project cost. If you were to use traditional conductor for reconductoring, the required upgrade to the structure can be substantial. Let me give you a real world example. In March 2021, we reconducted an 11 mile 230kV transmission line in North Dakota. The utility needed to increase line capacity to accommodate wind farms in the area. So the traditional conductor ACSS was initially used which required expensive and time consuming structural retrofit to 90% of the structures because of excessive sagging. When they later switched to TS solution, they were able to save 40% in total project CAPEX because we avoided all the structural retrofit. The project was completed 12 months ahead of schedule with $1.8 million capex saving. Let's imagine what is possible if we thus upgraded our power grid and its capacity around the world. We could connect the renewable generation instantly versus the years long wait that we're experiencing today. No more bottlenecks that's holding back wind or solar projects. We can electrify everything and meet the growing power demand for electric vehicles, heat pumps, industrial process and data centers without grid reliability or transmission congestion constraints. Here's a big one we can dramatically reduce greenhouse gas emission just with the reduced line loss saving alone. We can avoid as much as 500 million tons of greenhouse gas each year because we do not have to do as much compensatory generation. Add to that the multi gigaton opportunity. If we are able to connect so much more solar and wind to the world's power grid, you can make it happen. For example, you can support legislation, policymaking and regulations that require our utility companies to consider advanced conductor in transmission, reliability, decarbonization or grid modernization planning while at the same time providing performance or other incentives that are enabled by new technology like TS so that they can improve grid performance by investing in this technology. Conductors have a design life of 50 to 70 years. Let's upgrade our power grid. Build it better for a clean energy future. Today we cannot afford to have another 50 to 70 years locked up with century old technology in our power grid. I believe firmly that our power grid can and should be the enabler for energy transition. We have opportunity to write that legacy. We went from dial up Internet to 5G in a couple of decades. We can do the same for our power grid. We just need to start now with the right conductor technology available today. Together we can make a difference for humanity and for climate change. Thank you.