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Voltage in Cayman Islands

Last Updated: 01 November 2021


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Power Quality in Cayman Islands

The Cayman Islands, a British Overseas Territory located in the western Caribbean Sea, have a generally reliable electricity supply network, providing electricity to residents and businesses across the three islands of Grand Cayman, Cayman Brac, and Little Cayman. While power outages and voltage fluctuations are uncommon, they do occur and are usually attributed to equipment failures or severe weather conditions, such as hurricanes or tropical storms.

Power Sector in Cayman Islands

The electricity supply in the Cayman Islands is managed by the Caribbean Utilities Company (CUC), a publicly traded company that has been providing electricity to the islands since the 1960s. CUC operates two power plants on Grand Cayman, one on Cayman Brac, and a small generating facility on Little Cayman. The power plants on Grand Cayman are the primary sources of electricity for the islands, while the plants on Cayman Brac and Little Cayman provide backup power in case of outages.

Overall, the electricity supply network in the Cayman Islands is reliable and well-maintained. The CUC regularly invests in infrastructure upgrades and maintenance to ensure the stability of the power grid. The company has recently invested in new power generation technologies, including solar power, to supplement the existing power plants.

In terms of reliability, the CUC has a strong track record of providing reliable electricity to its customers. According to the company’s annual reports, the average number of power outages per customer has steadily decreased over the past decade, from around 14 per year in 2010 to less than 5 per year in 2020. Additionally, the average power outage duration decreased from about 2 hours.


Overall, the electricity supply network in the Cayman Islands is reliable and well-maintained, with a strong track record of providing reliable electricity to its customers. The CUC’s investments in infrastructure upgrades, maintenance, and new technologies have contributed to the stability of the power grid, and the company’s initiatives to improve reliability have further strengthened the network’s resilience.

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All mains powered equipment requires a supply which is maintained within certain limits. Too low and the equipment will malfunction, too high and the equipment could be serious damaged. In many developed and developing economies, power demand is outstripping supply, giving rise to large voltage swings, surges and brownouts in the supply.

Whatever your national or international power supply requirements, Sinalda (UK) can ensure your equipment receives the power it needs to operate efficiently and without interruption. To learn more about Sinalda (UK) and  the power protection solutions we offer please check-out the links below:

Sinalda (UK) – The Informed Choice Voltage Stabilizers Power Line Conditioners