The electric current on St. Lucia is 220 volts, 50 cycles, with a square, three-pin plug (U.K. standard). A few large hotels have 110-volt outlets for electric razors only. To use most North American appliances, you'll need a transformer to convert voltage and a plug adapter; dual-voltage computers or appliances will still need a plug adapter. Hotels will sometimes lend you a plug adapter for use during your stay.