Centrica PLC is an energy services and solutions provider, primarily operating in the UK. The company is organized into three main segments: Retail, which includes Home Energy Supply and Home Services; Optimisation; and Infrastructure. Centrica generates revenue by supplying energy to residential and business customers, offering energy management solutions, and investing in energy infrastructure projects, such as nuclear power and liquefied natural gas terminals. Its operations focus on promoting sustainability and reducing carbon emissions across its service offerings.