Centrica plc specializes in natural gas and electricity distribution. Net sales break down by activity as follows:
- gas and electricity sales to businesses (50.5%);
- natural gas and electricity sales to individuals (40%; British Gas; British No. 1). The group also provides installation services for urban central heating (British No. 1), air conditioning, and security systems;
- exploration and production of hydrocarbons (4.9%).
Net sales are distributed geographically as follows: the United Kingdom (46%), the United States (38%), Canada (5.6%), Ireland (3.4%), Norway (1.4%), and other (5.6%).