The European Commission (EC) has given the go-ahead to Macquarie Asset Management’s deal to acquire a 49.9% stake in Hydro Rein, the renewable energy business of Norwegian aluminium supplier Norsk Hydro ASA (<a href="https://live.euronext.com/en/product/equities/NO0005052605-XOSL" target="_blank">OSE:NHY</a>).