Trinidad and Tobago Electricity Commission (T&TEC) is the sole retailer of electricity in Trinidad and Tobago. It is responsible for the design, construction, operation and maintenance of the country's electrical transmission and distribution network. The utility supplies electric power to customers on both islands via a single interconnected grid. Electrical energy is widely been purchased, metered and feed into the national grid from independent power producers. These producers are the Power Generation Company of Trinidad and Tobago (PowerGen) giving a total of 1,344 MW, Trinity Power Ltd. giving 225 MW and Trinidad Generation Unlimited (TGU) giving 720MW. All power stations in Trinidad and Tobago are fueled by hydrocarbons (Natural Gas)