An international project led by Polish oil refiner Orlen SA (<a href="https://www.gpw.pl/search-results?search=1&search_lang=EN&search=pkn" target="_blank">WSE:PKN</a>) has obtained EUR 9 million (USD 9.9m) in grant financing from the European Union (EU) to test the use of green hydrogen-powered vehicles for the Chopin Airport in Warsaw and the city’s public transport system.