London CNN  —  The European Union has launched an investigation into China’s state support for its wind turbine companies, intensifying a push to protect Europe’s industry from a flood of cheap Chinese imports. Margrethe Vestager, the EU’s competition chief, said Tuesday that the probe would look into the development of wind farms in Spain, Greece, France, Romania and Bulgaria. The move provides further evidence of tensions between China, the world’s biggest manufacturer, and its major trading partners resulting from the oversupply of Chinese goods in key industries around the world. The country’s global trade surplus in goods has soared in recent years and is now approaching $1 trillion. Vestager’s announcement as part of a speech in Princeton, New Jersey, comes just days after the European Commission, the EU’s executive arm, opened a separate subsidies probe into Chinese companies bidding for a solar farm contract in Romania. The commission is making use of new powers under its Foreign Subsidies Regulation, aimed at addressing market distortions caused by subsidies from foreign governments and ensuring that EU companies are competing on a level playing field. “We saw the playbook for how China came to dominate the solar panel industry,” Vestager said, citing “massive subsidies for domestic suppliers.” This photo shows an aerial view of shipping containers stacked at the Lianyungang Port in Lianyungang, in eastern China's Jiangsu province on March 26, 2024. STR/AFP/Getty Images Related article A glut of cheap Chinese goods is flooding the world and stoking trade tensions “The result is that nowadays, less than 3% of the solar panels installed in the EU are produced in Europe,” she added, noting that China was deploying the same strategy across other areas of clean technology, including “exporting excess capacity to the rest of the world at low prices.” “We can’t afford to see what happened on solar panels happening again on electric vehicles, wind or essential chips,” Vestager said. In October, the European Commission launched an investigation into China’s subsidies for electric vehicle makers, which it suspects may be enabling these firms to keep prices super-low, creating unfair competition with European rivals. Beijing sees exports as a key measure to revive China’s slowing economy and is increasingly focusing on higher-value exports in industries that Europe and the United States see as strategically important as they seek to green their economies and reduce planet-heating pollution.