Tech
Solar energy is now the world’s cheapest source of power, study finds
Solar energy is now so cost-effective that, in the sunniest countries, it costs as little as £0.02 to produce one unit of power, making it cheaper than electricity generated from coal, gas or wind, according to a new study from the University of Surrey.
In a study accepted for publication in Energy and Environment Materials, researchers from Surrey’s Advanced Technology Institute (ATI) argue that solar photovoltaic (PV) technology is now the key driver of the world’s transition to clean, renewable power.
Professor Ravi Silva, co-author of the study and Director of the ATI at the University of Surrey, said, “Even here in the U.K., a country that sits 50 degrees north of the equator, solar is the cheapest option for large-scale energy generation.
“Globally, the total amount of solar power installed passed 1.5 terawatts in 2024—twice as much as in 2020 and enough to power hundreds of millions of homes. Simply put, this technology is no longer a moonshot prospect but a foundational part of the resilient, low-carbon energy future that we all want to bring to reality.”
The research team also found that the price of lithium-ion batteries has fallen by 89% since 2010, making solar-plus-storage systems as cost-effective as gas power plants. These hybrid setups, which combine solar panels with batteries, are now standard in many regions and allow solar energy to be stored and released when needed, turning it into a more reliable, dispatchable source of power that helps balance grid demand.
Despite many reasons to be optimistic, the ATI research team points to several challenges—particularly connecting large amounts of solar power to existing electricity networks. In some regions, such as California and China, high solar generation has led to grid congestion and wasted energy when supply exceeds demand.
Dr. Ehsan Rezaee, co-author of the study from the University of Surrey, commented, “Connecting growing levels of solar power to electricity networks is now one of the biggest challenges. Smart grids, artificial intelligence forecasting and stronger links between regions will be vital to keep power systems stable as renewable energy use rises.”
Professor Silva added, “With the integration of energy storage and smart grid technologies, solar is now capable of delivering reliable, affordable and clean power at scale. Innovations in materials such as perovskite solar cells could boost energy output by up to 50% without increasing land use.
“However, progress will depend on consistent, long-term policy support. Initiatives such as the Inflation Reduction Act in the US, the EU’s REPowerEU plan and India’s Production Linked Incentive scheme show how clear direction can drive investment and innovation. Sustained commitment and international collaboration will be essential if we are to accelerate the world’s transition to a clean and reliable energy system.”
More information:
Ehsan Rezaee et al, Solar Energy in 2025: Global Deployment, Cost Trends, and the Role of Energy Storage in Enabling a Resilient Smart Energy Infrastructure (2025). DOI: 10.22541/au.175647950.09188768/v1
Citation:
Solar energy is now the world’s cheapest source of power, study finds (2025, October 6)
retrieved 6 October 2025
from https://techxplore.com/news/2025-10-solar-energy-world-cheapest-source.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.
Tech
Lenovo’s Latest Wacky Concepts Include a Laptop With a Built-In Portable Monitor
Do you like having a second screen with your computer setup? What if your laptop could carry a second screen for you? That’s the idea behind Lenovo’s latest proof of concept, the ThinkBook Modular AI PC, announced at Mobile World Congress in Barcelona.
Lenovo is never shy to show off wacky, weird concept laptops. We’ve seen a PC with a transparent screen, one with a rollable OLED screen, a swiveling screen, and another with a flippy screen. At CES earlier this year, the company showed off a gaming laptop with a display that expands at the push of a button. Sometimes, these concepts turn into real products that go on sale (often in limited quantities).
At MWC 2026, Lenovo trotted out three concepts. While it’s unclear whether any of them will become real, purchasable products, there’s some unique utility here, and a peek at how computing experiences could change in the future.
A Laptop With a Built-In Portable Screen
As someone with a multi-screen setup at home and a fondness for portable monitors, the ThinkBook Modular AI PC appeals to me the most. At first glance, it looks like a normal laptop. Take a look behind, and you’ll notice there’s a second screen magnetically hanging off the back of the laptop, like a koala carrying a baby on its back.
The screen is connected to the laptop using pogo-pin connectors, so you can use it in this state to display content to people in front of you, say, if you were making a presentation during a meeting. Alternatively, you can pop this second screen off, remove a hidden kickstand resting under the laptop, and magnetically attach it to the 14-inch screen so that you have a traditional portable monitor experience. (You’ll need to connect this to the laptop via a USB-C cable in this orientation.)
If you don’t have the desk space for that orientation, you can always remove the keyboard from the base and pop the second screen there—it’ll auto-connect to the laptop via the pogo pins, and you’ll be able to use the Bluetooth keyboard to type on a dual-screen setup that resembles the Asus ZenBook Duo. The whole system is a fantastically portable method of improving productivity on the go, and the laptop isn’t too thick or cumbersome.
Tech
The 5 Big ‘Known Unknowns’ of Donald Trump’s New War With Iran
More recently, Iran has been a regular adversary in cyberspace—and while it hasn’t demonstrated quite the acuity of Russia or China, Iran is “good at finding ways to maximize the impact of their capabilities,” says Jeff Greene, the former executive assistant director of cybersecurity at CISA. Iran, in particular, famously was responsible for a series of distributed-denial-of-service attacks on Wall Street institutions that worried financial markets, and its 2012 attack on Saudi Aramco and Qatar’s Rasgas marked some of the earliest destructive infrastructure cyberattacks.
Today, surely, Iran is weighing which of these tools, networks, and operatives it might press into a response—and where, exactly, that response might come. Given its history of terror campaigns and cyberattacks, there’s no reason to think that Iran’s retaliatory options are limited to missiles alone—or even to the Middle East at all.
Which leads to the biggest known unknown of all:
5. How does this end? There’s an apocryphal story about a 1970s conversation between Henry Kissinger and a Chinese leader—it’s told variously as either Mao-Tse Tung or Zhou Enlai. Asked about the legacy of the French revolution, the Chinese leader quipped, “Too soon to tell.” The story almost surely didn’t happen, but it’s useful in speaking to a larger truth particularly in societies as old as the 2,500-year-old Persian empire: History has a long tail.
As much as Trump (and the world) might hope that democracy breaks out in Iran this spring, the CIA’s official assessment in February was that if Khamenei was killed, he would be likely replaced with hardline figures from the Islamic Revolutionary Guard Corps. And indeed, the fact that Iran’s retaliatory strikes against other targets in the Middle East continued throughout Saturday, even after the death of many senior regime officials—including, purportedly, the defense minister—belied the hope that the government was close to collapse.
The post-World War II history of Iran has surely hinged on three moments and its intersections with American foreign policy—the 1953 CIA coup, the 1979 revolution that removed the shah, and now the 2026 US attacks that have killed its supreme leader. In his recent bestselling book King of Kings, on the fall of the shah, longtime foreign correspondent Scott Anderson writes of 1979, “If one were to make a list of that small handful of revolutions that spurred change on a truly global scale in the modern era, that caused a paradigm shift in the way the world works, to the American, French, and Russian Revolutions might be added the Iranian.”
It is hard not to think today that we are living through a moment equally important in ways that we cannot yet fathom or imagine—and that we should be especially wary of any premature celebration or declarations of success given just how far-reaching Iran’s past turmoils have been.
Defense Secretary Pete Hegseth has repeatedly bragged about how he sees the military and Trump administration’s foreign policy as sending a message to America’s adversaries: “F-A-F-O,” playing off the vulgar colloquialism. Now, though, it’s the US doing the “F-A” portion in the skies over Iran—and the long arc of Iran’s history tells us that we’re a long, long way from the “F-O” part where we understand the consequences.
Let us know what you think about this article. Submit a letter to the editor at mail@wired.com.
Tech
This Backyard Smoker Delivers Results Even a Pitmaster Would Approve Of
While my love of smoked meats is well-documented, my own journey into actually tending the fire started just last spring when I jumped at the opportunity to review the Traeger Woodridge Pro. When Recteq came calling with a similar offer to check out the Flagship 1600, I figured it would be a good way to stay warm all winter.
While the two smokers have a lot in common, the Recteq definitely feels like an upgrade from the Traeger I’ve been using. Not only does it have nearly twice the cooking space, but the huge pellet hopper, rounded barrel, and proper smokestack help me feel like a real pitmaster.
The trade-off is losing some of the usability features that make the Woodridge Pro a great first smoker. The setup isn’t as quite as simple, and the larger footprint and less ergonomic conditions require a little more experience or patience. With both options, excellent smoked meat is just a few button presses away, but speaking as someone with both in their backyard, I’ve been firing up the Recteq more often.
Getting Settled
Photograph: Brad Bourque
Setting up the Recteq wasn’t as time-consuming as the Woodridge, but it was more difficult to manage on my own. Some of the steps, like attaching the bull horns to the lid, or flipping the barrel onto its stand, would really benefit from a patient friend or loved one. Like most smokers, you’ll need to run a burn-in cycle at 400 degrees Fahrenheit to make sure there’s nothing left over from manufacturing or shipping. Given the amount of setup time and need to cool down the smoker after, I would recommend setting this up Friday afternoon if you want to smoke on a Saturday.
-
Politics1 week agoPakistan carries out precision strikes on seven militant hideouts in Afghanistan
-
Business1 week agoEye-popping rise in one year: Betting on just gold and silver for long-term wealth creation? Think again! – The Times of India
-
Tech1 week agoThese Cheap Noise-Cancelling Sony Headphones Are Even Cheaper Right Now
-
Sports1 week agoKansas’ Darryn Peterson misses most of 2nd half with cramping
-
Sports1 week agoHow James Milner broke Premier League’s appearances record
-
Sports1 week ago
Mike Eruzione and the ‘Miracle on Ice’ team are looking for some company
-
Entertainment1 week agoViral monkey Punch makes IKEA toy global sensation: Here’s what it costs
-
Entertainment1 week agoSaturday Sessions: Say She She performs "Under the Sun"

