Solar energy is even cheaper than you think | Jenny Chase - TED Talks Daily

Summary

TED Talks Daily: "Solar Energy is Even Cheaper Than You Think" by Jenny Chase

Host: TED
Host Presenter: Elise Hu
Episode Release Date: January 13, 2025

Introduction

In the latest episode of TED Talks Daily, hosted by Elise Hu, renowned solar energy analyst Jenny Chase delivers an enlightening discussion on the rapid advancements and cost-effectiveness of solar energy. Titled "Solar Energy is Even Cheaper Than You Think," Jenny delves into the unprecedented growth of solar installations globally, the challenges of data accuracy in emerging markets, and the profound impact of solar power on both developing and developed nations. Her insights not only highlight the transformative potential of solar energy but also offer a hopeful perspective on combating climate change.

The Unprecedented Decline in Solar Module Costs

Jenny Chase opens her talk by addressing the astounding reduction in solar module costs, making solar energy more accessible than ever before.

"You can buy a solar module for the price of about eight cups of the posh coffee you get here in Brussels." [02:08]

She emphasizes that solar panels are not only affordable but also versatile, capable of being integrated into everyday structures like fences without significant additional costs. This affordability is a game-changer, particularly for regions grappling with energy poverty.

Global Surge in Solar Installations

Jenny provides a comprehensive overview of the global solar landscape, highlighting the sheer volume of installations and the pivotal role played by major players like China.

"Last year, 444 gigawatts of solar modules got installed worldwide. More than half of that was in China." [02:25]

She compares this capacity to that of entire nations, noting that 444 gigawatts surpass the total power capacity of Japan. Projections indicate that this year, installations could reach nearly 600 gigawatts, underscoring the sector's exponential growth.

Challenges in Data Accuracy and Emerging Markets

One of the critical challenges Jenny addresses is the reliability of data in tracking solar installations, especially in rapidly developing markets.

"Back in 2007, there were about 12 countries installing solar... Now my team is trying to cover 146 solar markets and some of the data is really bad." [03:00]

Using Pakistan as a case study, Jenny illustrates the discrepancies between official data and actual installations. Official records suggest less than 3 gigawatts are installed in Pakistan, but satellite data reveals a significant surge in installations that far exceed these numbers.

"Atlas maps found 443 installations in Pakistan, many of which we had no idea existed." [03:52]

Solar Power Addressing Critical Needs in Vulnerable Regions

Jenny highlights how solar energy is not just an alternative power source but a critical solution for regions facing extreme environmental and infrastructural challenges.

"Pakistan is vulnerable to extreme temperatures... in 2024, 500 people have died in Pakistan in heat waves and temperatures reached 52 degrees Celsius." [04:10]

With power capacity per person in Pakistan being merely 1/18th of that in the United States, solar panels provide an essential means to power air conditioning and fans during the hottest times of the day, directly addressing the immediate needs of the population.

"The total power capacity per person in Pakistan is 1/18 as much as it is in the United States." [04:28]

Impact on Traditional Energy Grids

The surge in solar installations has significant ramifications for traditional coal-fired grids, as seen in Pakistan.

"The solar boom in Pakistan is really happening. It's not just an artifact of China customs data." [05:12]

As businesses and homes adopt solar power, they reduce their reliance on the coal-fired grid, forcing the grid operators to increase prices for remaining customers. This, in turn, creates a feedback loop that encourages even more solar adoption.

"The power demand in Pakistan fell 9% in 2023... because of all these solar panels that are not being seen by the grid." [06:00]

The Volatility of Solar Markets: The "Solar Coaster"

Jenny introduces the concept of the "solar coaster," illustrating the fluctuating nature of solar market growth through the example of South Africa.

"Solar markets are more like a roller coaster. Actually, we call it the solar coaster." [06:45]

South Africa experienced a rapid increase in solar installations during a severe blackout season, adding a gigawatt of rooftop solar in just two months. However, as traditional power plants were rehabilitated and blackouts became less frequent, the solar market experienced a downturn.

"The solar market's fallen back, actually, in South Africa in 2024." [07:15]

This volatility highlights the complex interplay between energy infrastructure, market demand, and renewable energy adoption.

Solar Energy in Developed Markets: A Case Study of California

Transitioning to developed markets, Jenny examines California's impressive strides in integrating solar energy into its power grid.

"By 2023, on an average day, there is so much solar that the state is exporting power around noon." [08:30]

The synergy between solar energy and battery storage systems has enabled California to significantly reduce its reliance on gas-fired power plants. Batteries store excess solar energy generated during the day and discharge it in the evening, ensuring a stable and reliable power supply.

"Batteries are doing exactly what they're meant to do. They're charging on solar in the daytime and they're discharging in the evening." [09:00]

As a result, California has achieved a 30% reduction in carbon emissions per unit of electricity generation since 2012.

Future Outlook: Batteries and Integrated Renewable Systems

Jenny concludes her talk with an optimistic outlook on the future of renewable energy, emphasizing the crucial role of battery technology in enhancing the effectiveness of solar and other renewable sources.

"This is actually working and that is why I have hope that we can beat climate change." [10:00]

She envisions a future where batteries, alongside solar and wind energy, create a robust and resilient energy system capable of phasing out fossil fuels entirely.

Conclusion

Jenny Chase’s compelling analysis underscores the transformative potential of solar energy in both developing and developed regions. By addressing cost barriers, enhancing data accuracy, and integrating advanced technologies like battery storage, solar power is poised to become a cornerstone in the global effort to combat climate change. Her insights provide a comprehensive understanding of the current landscape and a hopeful roadmap for the future, demonstrating that with continued innovation and investment, a sustainable and clean energy future is within reach.

Notable Quotes:

"You can buy a solar module for the price of about eight cups of the posh coffee you get here in Brussels." [02:08]
"Solar markets are more like a roller coaster. Actually, we call it the solar coaster." [06:45]
"Batteries are doing exactly what they're meant to do. They're charging on solar in the daytime and they're discharging in the evening." [09:00]
"This is actually working and that is why I have hope that we can beat climate change." [10:00]

By Jenny Chase, presented on TED Talks Daily

Transcript

Thumbtack (0:00)

Thumbtack presents the ins and outs of caring for your home. Out Indecision, overthinking, second guessing every choice you make in plans and guides that make it easy to get home projects done out beige on beige on beige in Knowing what to do, when to do it and who to hire. Start caring for your home with confidence. Download Thumbtack today.

Ryan Reynolds (0:26)

I used to think buying foundation online was impossible. How am I supposed to find my shade when I can't even get it right in store? Then I discovered IL Maquillage. I took their AI powered quiz to find my custom match and wow. This foundation is literally my skin in a bottle. The undertone and coverage are spot on. It's so neutral and weightless I can't even tell I'm wearing makeup. Plus, with Try before youe Buy, you can try your full size at home for 14 days. Take the power match quiz now at ilmaquillage.com Quiz I L M A K I A G E.com Quiz hey there Ryan Reynolds.

Mint Mobile Representative (0:58)

New Year and you know what that means. No, not the diet resolutions. A way for us all to try and do a little bit better than we did last year. And my resolution, unlike big wireless, is to not be a raging and raise the price of wireless on you every chance I get. Give it a try@mintmobile.com switch $45 upfront.

Ryan Reynolds (1:18)

Payment required equivalent to $15 per month new customers on first 3 month plan only taxes and fees, extra speed slower above 40 gigabytes on unlimited. See mintmobile.com for details.

Jenny Chase (1:27)

Foreign.

Elise Hu (1:36)

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. Great news. Solar power is starting to displace fossil fuels in the countries that most need cheap and clean electricity. In her 2024 talk, Solar Savant Jenny Chase puts into perspective the growth we've seen in this renewable energy source, the areas where it could be more reliable, and the road to getting there.

Jenny Chase (2:08)

You've probably all heard that solar modules are cheap, but I'm not sure you appreciate just how cheap. You can buy a solar module for the price of about eight cups of the posh coffee you get here in Brussels, you can make solar panels into a fence, and it's not significantly more expensive than ordinary fencing material. But this isn't just great news for rich Europeans who drink posh coffee. Solar power is starting to displace fossil fuels in the countries that most need cheap and clean electricity. Now, I have been an analyst of this sector for nearly 20 years and the growth is really impressive. And last year, 444 gigawatts of solar modules got installed worldwide. More than half of that was in China. Actually, 444 gigawatts is quite a lot. It's more than the power capacity of Japan. And even more is being installed this year. It's probably just under 600 gigawatts. But I haven't set you off on a diversion now to complain about how hard my job is. Back in 2007, there were about 12 countries installing solar and the official data coming out of them was good. Now my team is trying to cover 146 solar markets and some of the data is really bad. Even Germany and Spain are installing more solar than is in their official data. So what hope is there for good data about countries in Africa or Southeast Asia? Take for example, Pakistan. So the official data on how much solar is installed in Pakistan is that there's less than 3 gigawatts in the country. But more solar modules left China for Pakistan in 2022 alone. Now, we did think that substantial amounts of those were being re exported to Afghanistan to run irrigation pumps, to grow poppies, to make heroin. And there's also a money laundering scheme which distorts the data, but these don't seem to be that big. And in 2024, things got ridiculous. 16 gigawatts of solar modules have left China for Pakistan in the first eight months of this year. What is going on here? I worked with a machine learning and satellite data firm called Atlas Maps to detect the solar modules in Pakistan. Now, the great thing about detecting solar modules using satellite data is you can't really hide solar modules. The bad thing is that they are distributed, they're quite small installations, and sometimes they look a lot like greenhouses or skylights. But Atlas maps found 443 installations in Pakistan, many of which we had no idea existed. It also missed some the machine learning algorithm just did not detect. What the satellite data did confirm is that solar modules in Pakistan are installed near the industrial clusters of Lahore, Karachi and Islamabad. And actually, if you go on Google Earth and just look at a random spot somewhere in Pakistan in these cities, you can see loads of the solar of the roofs have solar panels on them. It's really incredible. So the solar boom in Pakistan is really happening. It's not just an artifact of China customs data. So why? So unfortunately, Pakistan is vulnerable to extreme temperatures. In 2024, 500 people have died in Pakistan in heat waves and temperatures reached 52 degrees Celsius. So this is a country where people really need fans and air conditioning to survive. But power is expensive in Pakistan, increasingly expensive. And the total power capacity per person In Pakistan is 1/18 as much as it is in the United States. This is a country that really needs power. Now, the good thing about solar panels is that they generate in the daytime. So if you want to run air conditioning and fans, they're generating at the right time to do that. And we're pretty sure that this is what businesses and homes in Pakistan are doing. They're installing solar panels to reduce how much they have to pay the grid and to run their cooling systems as well as the other stuff that they do. But this is a problem for the largely coal fired grid in Pakistan because it's losing its best customers, which means it has to put up the prices for its remaining customers to fund the continuing operation of its coal plants, which means that those remaining customers have higher prices and even more reason to go solar. And the power demand in Pakistan fell 9% in 2023, as tracked by the grid. And this is probably partly because power is expensive, but also because of all these solar panels that are not being seen by the grid. So as analysts, obviously this is complicated, but we feel generally glad that Pakistanis are getting their power from cheap and clean sources. It seems in general a good thing. But you can't always expect solar build to just go steadily up. Solar markets are more like a roller coaster. Actually, we call it the solar coaster. Take for example, South Africa. There was a boom in solar installations in South Africa because it was a really bad blackout season and people literally built solar so they had power. And as analysts, we got really excited about this. A gigawatt of rooftop solar was built in two months. A gigawatt is the size of a medium sized coal fired power plant. Okay, it only runs in the daytime, but it works. So we got really excited. We thought that South Africans would copy their neighbors and the South Africa solar market would keep going up and up and up. We were wrong about that. The solar market's fallen back, actually, in South Africa in 2024. And this is because there are fewer blackouts. And this is partly because Eskom fixed its coal fired power plants. Yay. But also because the solar is helping to support the grid. So it's not always simple. But cheaper solar power is helping poorer countries to meet their power demand without increasing fossil fuel use. And this is what makes my job interesting. But what we need is, is to stop burning fossil fuels. And it's most obvious that solar is helping there in markets with less unmet need for power. Take California for example. In 2012, California got 43% of its power from gas burned in state and it imported 29%. And by 2023, on an average day, there is so much solar that the state is exporting power around noon. So this is having an impact. What's next? Batteries are doing exactly what they're meant to do. They're charging on solar in the daytime and they're discharging in the evening so that the gas fired power plants don't have to be ramped up. And thanks to all these trends, California carbon emissions per unit of electricity generation have fallen over 30% since 2012. So solar power is pushing out fossil fuels in both richer and poorer countries. And the next step is probably batteries working with solar and working with wind and other renewables to continue to push out fossil fuels. This is actually working and that is why I have hope that we can beat climate change. Thank you.