Swedish investment firm EQT AB (<a href="https://www.nasdaq.com/european-market-activity/shares/eqt?id=SSE180864" target="_blank">STO:EQT</a>) and Singapore's sovereign wealth fund GIC have sealed a deal to acquire a majority stake in Calisen Group, a UK energy infrastructure assets owner specialised in smart meters and also offering electric vehicle (EV) charging, solar and battery, and heat pump installation, among other services.