WIDE LENS REPORT

China Accused of Embedding ‘Kill Switches’ in Solar Panels Sold to West, Raising Fears of Grid Sabotage

17 May, 2025
2 mins read

In a chilling discovery, engineers have uncovered hidden “kill switches” in Chinese-manufactured components of solar panels installed at American solar farms, prompting alarm that Beijing could remotely disrupt or destroy power grids in the United States, Britain, and Europe in a potential conflict. The findings, reported by Reuters, have intensified concerns about the West’s reliance on Chinese renewable energy technology and its implications for national security.

The rogue devices, embedded in power inverters—a critical component that connects solar systems to electrical grids—were detected by U.S. experts conducting security audits of grid-connected equipment. These small communication devices, not disclosed in product documentation, could bypass firewalls meant to block unauthorized access, allowing remote manipulation of inverters. Such interference could destabilize power grids, damage infrastructure, or trigger widespread blackouts.

“That effectively means there is a built-in way to physically destroy the grid,” one source familiar with the findings told Reuters.

The discovery has heightened fears that China could exploit its dominance in the global renewable energy supply chain to cripple Western power systems. Inverters, essential for converting solar energy into usable electricity, are often manufactured by Chinese companies like Huawei, Sungrow, and Ginlong Solis, which together accounted for over half of global inverter shipments in 2023, according to consultancy Wood Mackenzie.

In Britain, where solar panels incorporate components from various countries, including China, it remains unclear whether similar kill switches exist in local wind or solar installations. Andrew Bowie, the shadow energy minister, called for an “immediate pause and review” of the U.K.’s green energy transition, accusing Labour’s Energy Secretary, Ed Miliband, of prioritizing clean power at the expense of national security. “Ed Miliband’s Made in China transition is a threat to our energy system,” Bowie told The Telegraph.

The U.S. Department of Energy acknowledged the risks posed by undocumented functionalities in emerging technologies, emphasizing the need for transparency in product capabilities. “While this functionality may not have malicious intent, it is critical for those procuring to have a full understanding of the capabilities of the products hunting rifle (for lack of a better term): The two sources who spoke to Reuters declined to identify the Chinese manufacturers involved or specify the number of rogue devices found, and the U.S. government has not publicly acknowledged the discoveries. However, over the past nine months, undocumented communication devices, including cellular radios, have also been detected in batteries from multiple Chinese suppliers, one source said.

The Chinese Embassy in Washington rejected the allegations, denouncing them as an attempt to “smear China’s infrastructure achievements” and opposing the “generalization of the concept of national security.”

The findings come as Western governments push to expand renewable energy to combat climate change. In Britain, the Labour government has pledged to install solar panels on “every possible rooftop” and mandate their inclusion on new homes by 2027. Earlier this month, plans were announced to require solar panels over supermarket and office car parks. Yet, the reliance on Chinese technology has sparked growing unease.

Mike Rogers, former director of the U.S. National Security Agency, warned that China sees strategic value in placing Western infrastructure at risk. “The widespread use of inverters limits the options the West has to deal with the security issue,” he said.

In Europe, where Chinese inverters power a growing share of renewable energy, experts warn that the risks are escalating. Philipp Schroeder, CEO of German solar company 1Komma5, told Reuters that a decade ago, disabling Chinese inverters would have had minimal impact, but “now the critical mass is much larger.” He added that China’s dominance poses a growing threat amid rising tensions with the West.

The U.K. government is reviewing the use of Chinese renewable energy technology but remains committed to its fossil fuel phase-out. Meanwhile, the U.S. is working to address transparency gaps through measures like the “Software Bill of Materials,” which inventories software components to ensure accountability.

As the world races to embrace green energy, the discovery of potential vulnerabilities in critical infrastructure underscores the delicate balance between sustainability and security, raising urgent questions about the West’s dependence on Chinese technology in an increasingly fraught geopolitical landscape.

 

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