Mercury NZ Limited (MCY, formerly Mighty River Power Limited) is a prominent electricity company based in New Zealand. Specialising in renewable energy, Mercury generates electricity exclusively from 100% renewable sources, including hydro, geothermal, and wind power. In addition to its generation activities, Mercury also operates as a retailer, offering electricity, gas, broadband, and mobile services to customers. Notably, the New Zealand Government holds a legislated minimum 51% shareholding in the company, underscoring its strategic importance within the national energy sector.