What electric voltage is used in St. Lucia?

The national supply is 240 volts 50 cycles, with square three-pin plug (same as the United Kingdom). Transformers or adapters may be available. It is recommended that guests travel with their own plug adapters, i.e. to adapt a British 3-pin to your local plug. Please note that most laptops, mobile phones and small appliances take DUAL VOLTAGE (220/110V) therefore all you need is the correct plug adapter to plug your appliance into our national supply. Please read the small print on your appliance plug/transformer to confirm it can handle 220V/110V.