Grand Cayman Electricity Cost (CUC)
Current CUC residential rates plus an estimator that projects your monthly bill by home size and air-conditioning use. Air conditioning drives 50% to 75% of a typical Grand Cayman power bill. All figures in KYD.
Electricity Costs in Grand Cayman (CUC)
Electricity in Grand Cayman is supplied by CUC (Caribbean Utilities Company) and generated primarily from diesel, which makes it significantly more expensive than most North American and European cities. All rates are in CI$ (Cayman Islands Dollars).
Current residential rates: energy charge CI$0.1387/kWh, fuel cost charge CI$0.1800/kWh (2026-07), fuel duty CI$0.0132/kWh, renewables surcharge CI$0.0066/kWh, regulatory fee CI$0.0076/kWh, and a fixed facility charge of CI$6.96/month. The all-in variable rate works out to approximately CI$0.3461/kWh. The fuel cost charge is held at CI$0.18/kWh by the government summer relief cap through 30 September 2026; without it the current charge would be CI$0.2257/kWh and the all-in rate about CI$0.3918/kWh.
How Much Is a Typical Monthly Electricity Bill?
The bill depends almost entirely on air conditioning, which accounts for 50% to 75% of household consumption. Typical monthly consumption ranges from minimal to heavy A/C use: studio 450 to 810 kWh, 1-bedroom 650 to 1,170 kWh, 2-bedroom 870 to 1,560 kWh, 3-bedroom 1,200 to 2,160 kWh, and 4-bedroom or larger 1,650 to 2,970 kWh. At the current all-in rate, a typical household using around 1,160 kWh runs roughly CI$165 to CI$200 per month, and summer bills (July to September) run 15% to 25% higher. The government fuel cap can lower the fuel charge during summer months. Use the estimator on this page to project your own bill by home size and usage.
Frequently Asked Questions: Cayman Islands
How much is electricity in Grand Cayman?
The all-in residential rate from CUC works out to roughly CI$0.35 per kWh once the energy charge, fuel cost charge, fuel duty, renewables surcharge, and regulatory fee are combined, plus a small fixed monthly facility charge. The fuel charge is currently held at CI$0.18/kWh by the government summer relief cap through 30 September 2026. A typical household using around 1,160 kWh runs roughly CI$408 a month at that rate, and summer bills run higher with A/C load. The estimator on /electricity projects your bill by home size.
Why is electricity so expensive in the Cayman Islands?
CUC generates most of Grand Cayman's electricity from imported diesel, which is expensive and exposes bills to global fuel prices through a separate fuel cost charge. Heavy year-round air conditioning, which accounts for 50% to 75% of a typical household's usage, compounds the cost. A government fuel cap can soften the fuel charge during summer months.
Who provides electricity in Grand Cayman?
CUC (Caribbean Utilities Company) is the sole electricity provider in Grand Cayman, operating as a regulated monopoly overseen by OfReg. Grand Cayman, Cayman Brac, and Little Cayman are served separately. Residential customers pay an energy charge plus a monthly fuel cost charge that changes with diesel prices.
How can I lower my CUC bill in Grand Cayman?
Air conditioning is the biggest lever since it drives 50% to 75% of the bill: a higher thermostat setting, efficient inverter units, and good insulation make the largest difference. Solar (CUC's CORE/distributed generation programmes) can offset usage, and LED lighting plus efficient appliances help at the margin. Use the estimator on /electricity to see how usage changes your projected bill.