MI5 has launched an investigation into China’s expanding role in the UK’s energy sector, focusing on the potential risks posed by Chinese green technologies such as solar panels and industrial batteries. The inquiry is driven by concerns over Beijing’s growing influence in key national infrastructure, especially as the UK works to transition away from fossil fuels and decarbonize its energy system. According to people familiar with the matter, MI5 is assessing the potential security threats posed by Chinese companies, particularly the possibility of sensitive data being shared with the Chinese government and the risks related to Chinese control of strategic energy assets.
As reported by the Financial Times (FT), this investigation is part of a broader “audit” of UK-China relations, set to be released later this year. The government is examining the role of Chinese technology in critical energy infrastructure, with particular focus on wind turbine systems and battery storage solutions. MI5’s involvement reflects increasing worries within Whitehall regarding the security implications of Chinese-manufactured equipment being embedded in vital UK infrastructure.
The sale of Chinese-made wind turbines, such as those proposed for the Green Volt floating offshore wind project in Scotland, has sparked debate among MPs. Critics, including Shadow Energy Secretary Andrew Bowie, have raised alarms about the potential for Beijing to influence decision-making within private companies, which could result in vulnerabilities in the UK’s defense and energy infrastructure. The FT notes that security experts fear the turbines could be used to deploy spy sensors, potentially threatening national security.
Despite these concerns, the UK government is seeking to balance its economic ties with China while safeguarding national security. The FT highlighted that while the government has scrutinized Chinese involvement in sectors like nuclear energy—forcing a Chinese state-owned company to sell its stake in a British power plant—China’s dominance in renewable energy supply chains complicates efforts to reduce Chinese influence in the sector. As part of this delicate balancing act, the government has committed to ensuring all investments in energy infrastructure undergo rigorous national security assessments.

