There is a major step down sub station where electricity is routed for commercial or domestic use. 30 substations transform high voltage to low voltage. For commercial use, transformers in large buildings and some other buildings transform low voltage electricity even lower to 120 or 220 volts. This means that unlike in the USA it cannot operate with maximum economies of scale. Its electrical power is NOT solar or nuclear or wind generated.
Fuel oil is used exclusively.
It is piped directly into the central electricity generating plant owned by the utility on Serpentine Road in Pembroke Parish, west of the City of Hamilton, via a mile underground pipe from the oil docks terminal at Ferry Reach, St. George's Parish. This may be very expensive by USA standards but is less expensive than in the Cayman Islands. As a comparison, even in Maine, like California one of the most expensive places in the USA for electricity, the rate there is a fraction of that of Bermuda. These are general estimates which vary depending upon family size, electrical appliances and overall usage. Outages can be frequent, especially in gales or storms, but only relatively few places have emergency back-up systems.