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MIT Study Reveals Hidden Innovations Behind Solar Power’s Dramatic Cost Decline

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Solar energy, once a costly and niche technology, has become one of the most affordable and widely used power sources in the world. A new study from the Massachusetts Institute of Technology (MIT), published in PLOS ONE, has traced the dramatic fall in solar costs — more than 99 percent since the 1970s — to a complex web of innovations that span far beyond solar technology itself.

Researchers identified 81 distinct breakthroughs that have steadily lowered the cost of photovoltaic (PV) systems over the past five decades. These include technical improvements within the panels, such as wire-sawing methods that reduce silicon waste, alongside systemic changes like faster permitting procedures for new projects. Strikingly, many of these advances emerged from industries unrelated to solar power, including semiconductors, glassmaking, and even legal reforms.

“The story of how solar became the cheapest form of electricity in history is one of steady, systemic innovations,” said Kostantsa Rangelova, global electricity analyst at energy think tank Ember. She explained that incremental advances became transformative when combined with economies of scale and mass production, magnifying small efficiencies into significant cost reductions.

The effects of these changes are already reshaping energy markets. In June, solar power generated more electricity than any other source in the European Union for the first time — a symbolic milestone amid surging clean energy investments. Globally, around €1.7 trillion was invested in renewables last year, outpacing fossil fuels by €685 billion. Offshore wind has also become more cost-effective, but the price drop in solar remains the most dramatic, positioning it as a leader in the global shift to renewables.

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Looking ahead, MIT researchers argue that the next phase of cost reductions may come from unexpected areas, including software, robotics, and grid integration. Tools such as automated engineering reviews, AI-driven design, and modular panel construction could deliver new savings and improve quality. “What we’ve seen so far in PV may really just be the beginning,” said study co-author Magdalena Klemun, noting that spillovers from other sectors will continue to accelerate change.

However, challenges remain, particularly in end-of-life management. Solar panels, designed to last over 30 years, are difficult to dismantle and recycle, raising concerns about mounting waste as older units retire. Researchers and companies across Europe, Australia, and beyond are now exploring sustainable recycling methods, repair programs, and reusable designs to address this issue. Similar concerns are emerging in the wind industry, where turbine waste could reach 43 million tonnes by 2050.

The MIT team emphasized that many of the systemic innovations driving solar’s success originated not only from laboratories and corporations but also from government-led initiatives. By learning from solar’s history, policymakers and industry leaders can better support breakthroughs in other renewable technologies.

“Through this retrospective analysis, you learn something valuable for future strategy,” said Jessika Trancik, lead author of the study. “It is also useful to know what adjacent sectors may help support improvement in a particular technology.”

With solar now at the forefront of clean energy, its past offers critical lessons for accelerating the world’s transition toward a net-zero future.

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US Coast Guard Pursuit of Sanctioned Tanker Complicated by Russian Flag

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The US Coast Guard’s operation to seize the sanctioned oil tanker Bella 1 has grown more complex after the vessel’s crew painted a Russian flag on its hull, claiming Moscow’s protection during a 10-day pursuit in the Atlantic. Officials said the ship, linked to the Iranian oil trade, is now reportedly empty.

Washington obtained a court order authorizing the seizure based on Bella 1’s history of transporting Iranian crude. However, the crew’s display of the Russian tricolour complicates enforcement under maritime law. US authorities have been tracking the tanker at roughly 800 meters distance while determining its legal status through diplomatic channels.

The Bella 1 initially resisted interception near Venezuela on December 21. Instead of stopping, it reversed course and entered open waters. Maritime tracking data show that the tanker had loaded Iranian crude at Kharg Island in September before disabling its location transponder near the Strait of Hormuz. After two months of being untracked, the ship resumed signals while empty, suggesting an at-sea cargo transfer.

Initially, Bella 1 declared Curaçao as its destination but abruptly changed course after US forces seized another tanker on December 10. Since December 17, the vessel’s transponder has been off, and officials estimate it may be heading toward Iceland or Greenland.

The US Treasury sanctioned Bella 1 in 2024 for allegedly transporting Iranian oil on behalf of Hezbollah, Yemen’s Houthis, and Iran’s Revolutionary Guard Corps. The vessel is owned by Turkey-based Louis Marine Shipholding Enterprises, and its crew primarily comes from Russia, India, and Ukraine.

The pursuit marks the third US interception operation this month. The Coast Guard successfully seized two other tankers carrying Venezuelan crude, escorting both to Texas. President Donald Trump said authorities will capture Bella 1, stating, “We’ll end up getting it.”

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The US has deployed its largest military presence in the Caribbean and eastern Pacific in decades, targeting both sanctioned tankers and suspected narcotics vessels. On December 17, Trump ordered a blockade of tankers trading with Venezuela to cut off President Nicolás Maduro’s primary revenue source. Maduro’s government called the operations acts of piracy, with Vice President Delcy Rodríguez saying Caracas would report the seizures to the UN Security Council.

Russia has increasingly relied on a shadow fleet of vessels with opaque ownership, flags of convenience, and irregular shipping practices to transport oil while circumventing Western sanctions imposed after its full-scale invasion of Ukraine in 2022. The fleet, composed of hundreds of aging ships, has been essential for maintaining oil exports and funding Russia’s war effort.

Experts note that if Russia formally registers Bella 1, forcibly boarding the tanker could trigger diplomatic tensions, even under the UN Convention on the Law of the Sea, which allows authorities to act against vessels flying false flags or operating without valid registration. For now, the Bella 1 continues to evade capture while US officials monitor its movements.

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US Conducts Strike on Alleged Drug-Smuggling Facility, Marks Escalation in Operations

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US President Donald Trump said Monday that the United States conducted a strike on a shore facility used for loading boats with drugs, marking an escalation beyond previous operations targeting vessels in international waters. The president declined to specify the location or which agency carried out the strike.

“There was a major explosion in the dock area where they load the boats up with drugs,” Trump said while meeting Israeli Prime Minister Benjamin Netanyahu in Florida. “They load the boats up with drugs, so we hit all the boats and now we hit the area. It’s the implementation area. There’s where they implement. And that is no longer around.”

Trump offered few details about the strike, including whether it was conducted by the US military or the CIA. “I know exactly who it was, but I don’t want to say who it was. But you know it was along the shore,” he added.

The operation represents a shift in Trump administration tactics, which have previously focused on striking suspected drug-smuggling boats in international waters of the Caribbean and eastern Pacific. According to administration figures, at least 107 people have been killed across 30 strikes since early September. On Monday, the US conducted another strike against an alleged narcoboat in the eastern Pacific, resulting in two fatalities.

Trump initially referenced the strike during a call with WABC radio host John Catsimatidis on Friday. “I don’t know if you read or saw, they have a big plant or a big facility where they send the, you know, where the ships come from,” he said. “Two nights ago, we knocked that out. So, we hit them very hard.”

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Unlike previous maritime operations, which were often announced by US Defence Secretary Pete Hegseth or military social media accounts, no formal announcement was made regarding the facility strike. The Pentagon referred questions to the White House, which did not immediately provide additional information. Venezuela’s government also declined to comment.

Trump has long indicated that US operations could move beyond boat strikes to land-based missions in South America, including Venezuela. Recent weeks have seen the deployment of US warships to the region, increased military presence, and the seizure of two oil tankers, with a third vessel pursued. The administration has characterized the campaign as part of an “armed conflict” against drug cartels to stop narcotics flowing into the United States.

Venezuelan President Nicolás Maduro has dismissed the US actions, insisting that the real aim of American operations is to pressure him from office rather than target drug trafficking.

The facility strike signals a new phase in US operations in the region, demonstrating a willingness to extend military actions onto land, raising questions about potential further escalation in South America.

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One Dead, Three Missing After Migrant Boat Sinks Off Samos

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One person has died and three remain missing after a migrant boat sank near the Greek island of Samos early Monday, Greek coast guard authorities reported. Twenty-six migrants reached the shore in the Petalides area and alerted authorities that others were still at sea.

The incident occurred during the early morning hours, prompting an immediate search and rescue operation. Coast guard vessels, a helicopter, a private boat, and ground teams joined the efforts. During the operation, the body of a woman was recovered, while crews continued searching for the three missing migrants. The nationalities of those involved have not been disclosed.

Greece has served as a major entry point for migrants and refugees into the European Union since 2015. Over one million arrivals have been recorded through Greek territory, though hundreds have died attempting the often perilous sea crossing.

Data from Frontex, the European Border and Coast Guard Agency, shows that irregular migration flows through the eastern Mediterranean fell by 30 percent in the first 11 months of 2025 compared with the same period in 2024. Around 46,200 migrants arrived in Greek waters this year. However, Frontex noted a sharp increase in activity along the Libya-Crete route, with detections rising by 272 percent year-on-year.

The sinking off Samos is part of a series of recent migrant tragedies in Greek waters. On 6 December, Greek authorities recovered 17 bodies and rescued two migrants from a vessel off Crete. Two days later, a 12-year-old boy died after being struck by a boat propeller when smugglers forced migrants to jump from a speedboat near Samos.

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A week later, another vessel carrying 31 migrants crashed into rocks off Samos. Twenty-eight people were rescued, while three remained unaccounted for.

The Eastern Mediterranean continues to be a dangerous route for migrants seeking entry into Europe. Authorities have repeatedly warned of the risks posed by overcrowded and unseaworthy vessels operated by smugglers. Local coast guard officials have emphasized the need for vigilance, particularly in areas near islands like Samos and Crete, which lie close to key migrant corridors from Turkey and Libya.

Search and rescue teams remain on alert, patrolling the waters around Samos to locate the three missing migrants and prevent further casualties.

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