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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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Suspected Drone Strike Hits UK Base in Cyprus Amid Escalating Iran Conflict

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A suspected drone strike hit a British military base in Cyprus shortly after Prime Minister Keir Starmer said the United Kingdom had agreed to allow the United States to use its bases for attacks on Iran’s missiles and launch sites, marking the first apparent impact of the Iran war on European soil.

The UK Ministry of Defence said a drone struck RAF Akrotiri, a key Royal Air Force base on Cyprus’ southern coast, just after midnight on Monday. British Defence Secretary John Healey told officials that ballistic missiles had been fired toward Cyprus around the same time. He said there were no casualties.

Cyprus confirmed the incident, describing it as involving an unmanned drone that caused limited damage at the base. Government spokesperson Constantinos Letymbiotis said the event occurred shortly after midnight and that authorities were assessing the situation. He did not provide further operational details.

RAF Akrotiri is one of the UK’s most strategically important overseas bases and has played a role in regional security operations. The reported strike comes amid rising tensions following US and Israeli attacks on Iranian military targets and Tehran’s retaliatory strikes across the Gulf.

Earlier, Starmer confirmed that the UK had agreed to permit the US to use British bases for operations targeting Iran’s missile systems and launch infrastructure. The decision signaled deeper British involvement in efforts to counter Iran’s military capabilities.

European leaders condemned Iran’s recent attacks. In a joint statement, French President Emmanuel Macron and German Chancellor Friedrich Merz strongly criticised Iranian strikes on countries in the region and said they would take steps to defend their interests and those of their allies. They indicated that defensive measures could include proportionate action aimed at stopping missile and drone launches at their source.

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Iran’s foreign minister, Abbas Araghchi, suggested in a television interview that some of the country’s military units were acting independently under general pre-issued instructions. His comments came after questions about Iranian strikes on Gulf Arab nations that have previously mediated between Tehran and Western powers.

Iran has launched attacks against Qatar, which shares a major offshore gas field with the Islamic Republic and has played a diplomatic role in regional negotiations. The United Arab Emirates and Oman have also been targeted. Oman had recently served as an intermediary in nuclear discussions between Iran and the United States.

The strike on RAF Akrotiri underscores the widening scope of the conflict, with military actions now extending beyond the Middle East and into European territory linked to allied operations.

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Cruise Passengers Stranded Amid Escalating Middle East Crisis

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The Persian Gulf is currently characterised by hostilities. The Strait of Hormuz is closed to shipping, with only vessels connected to China or Russia allowed to pass. The escalating crisis in the region has left thousands of tourists stranded on cruise ships and disrupted air travel.

On Sunday afternoon, a missile struck the water near the Mein Schiff 4, operated by TUI Cruises, while the ship was docked in Abu Dhabi, United Arab Emirates. Clouds of black smoke were reported over the water, according to the Bild newspaper. The vessel carries approximately 2,500 passengers and 1,000 crew members, with many due to return to Germany from Dubai. The situation on board is tense, and it is not yet clear if anyone was injured.

Security measures on the ship remain strict. Passengers are prohibited from entering outside decks, are advised to avoid windows, and receive regular alerts on their smartphones about potential incoming missile threats.

A sister ship, Mein Schiff 5, berthed in Doha, Qatar, is also affected. Passengers attempting to fly home from Doha on Saturday were forced to return to the ship after flights were canceled. Many had already boarded aircraft and had to leave luggage at the airport, waiting around ten hours before being taken back to the ship in the evening.

Other cruise lines are similarly affected. Six vessels are currently docked across ports in Dubai, Abu Dhabi, and Doha. These include the MSC Euribia from MSC Cruises, the Celestyal Discovery and Celestyal Journey from Celestyal Cruises, and the Aroya from the Saudi operator Aroya Cruises.

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The closure of airspace in multiple countries in the region has compounded the situation, preventing passengers from flying home. Thousands remain stranded, unsure when they will be able to continue their journeys or be evacuated safely.

The crisis follows US and Israeli strikes in the region on Saturday, which prompted retaliatory attacks by Iran targeting military positions in the Persian Gulf. Cruise passengers, many of whom expected a calm holiday, have instead faced a sudden escalation in regional tensions.

Authorities in ports and embassies are coordinating with shipping companies to maintain safety and provide updates, but the rapidly evolving security situation has made evacuation and travel plans uncertain. Tourists are advised to follow official guidance and avoid unnecessary movement on or around their vessels.

The disruption highlights the wider impact of escalating hostilities in the Gulf, affecting not only commercial shipping but also tourism and international travel. Passengers on affected cruise ships and flights face prolonged delays as authorities work to stabilize the situation and ensure safety in the region.

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Azerbaijan Commemorates Khojaly Massacre with New Memorial and National Ceremony

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Azerbaijan held nationwide commemorations on Thursday to mourn the hundreds of civilians killed in February 1992 in the town of Khojaly during the Karabakh conflict with Armenia. President Ilham Aliyev led the ceremonies, inaugurating a new Khojaly Genocide Memorial Complex in Baku to honor the victims of what he described as “the greatest tragedy for the Azerbaijani people.”

Thousands of people gathered at the Khojaly Massacre Memorial in Baku for the National Day of Remembrance. A minute of silence was observed across the country as citizens paid tribute to those who lost their lives over 30 years ago.

Azerbaijani authorities state that 613 civilians, including women and children, were killed when Armenian forces, with the support of the former Soviet Union’s 366th Guards Motor Rifle Regiment, attacked Khojaly. Dozens more were reported missing or injured during the assault, which occurred amid the war between ethnic Armenian forces backed by Armenia and Azerbaijani troops over the Karabakh region and surrounding areas.

Human Rights Watch conducted its own investigation into the incident, attributing direct responsibility for the civilian deaths to Karabakh Armenian forces. Armenia has repeatedly denied the accusations, arguing that the reported death toll was exaggerated and that casualties resulted from fighting between the two sides.

Despite differing accounts, the Khojaly tragedy remains a deeply significant event in Azerbaijan’s collective memory. Commemorations continue to emphasize the human cost of the conflict and the impact on generations of Azerbaijanis.

This year’s ceremonies took place against the backdrop of a peace and reconciliation process between Azerbaijan and Armenia. Both nations have pledged to work toward a more stable and peaceful future following decades of conflict and suffering on both sides.

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President Aliyev emphasized the importance of remembering the past while looking forward. The newly inaugurated memorial complex aims to provide a permanent site for reflection, ensuring that the victims of Khojaly are remembered by future generations.

The National Day of Remembrance has become a focal point for public reflection and national unity, drawing participants from across Azerbaijan. Observers note that the ceremonies serve both to honor the victims and to reinforce awareness of the historical and ongoing challenges in the Karabakh region.

Over 30 years after the massacre, Khojaly continues to hold a central place in Azerbaijani history. Thursday’s events highlighted the nation’s efforts to commemorate the past while supporting dialogue and cooperation with Armenia to foster lasting peace in the South Caucasus.

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