Norway’s $2.1-trillion oil fund is looking to invest in renewable energy assets in the U.S. and expand its clean energy portfolio in Europe, a senior executive at the world’s largest sovereign wealth fund told Bloomberg in an interview published on Monday. The fund has recently hired three people in New York, Harald von Heyden, global head of energy and infrastructure at the Norwegian fund, told Bloomberg. The Government Pension Fund Global (GPFG), which is commonly referred to as ‘Norway’s oil fund’ because…