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Voltage in Cuba

Last Updated: 01 November 2021


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Power Quality in Cuba

The electricity supply network in Cuba has undergone significant changes in recent years, with efforts being made to improve both the quality and reliability of the service. However, there are still challenges to overcome, including a lack of investment, outdated infrastructure, and a dependence on fossil fuels for power generation. The country experiences frequent power outages and voltage fluctuations, particularly during the summer when electricity demand is highest.

Power Sector in Cuba

According to the National Energy Council of Cuba, the country had a total installed capacity of 6,052 MW in 2020, with the majority of the electricity generated by thermal power plants fueled by oil and natural gas. Cuba has also made efforts to increase the use of renewable energy sources, such as wind and solar power, with the goal of achieving 24% of electricity generation from renewables by 2030.

Despite these efforts, Cuba still experiences frequent power outages, particularly during the summer months when demand for electricity is highest. The Cuban government has implemented measures to address this issue, including the installation of new power plants and transmission lines, as well as the replacement of aging equipment.

One of the challenges facing the electricity supply network in Cuba is a lack of investment in the sector. Cuba is facing economic challenges, including the impact of the U.S. embargo and the COVID-19 pandemic, which have limited the country’s ability to invest in infrastructure. As a result, the electricity sector requires modernisation, and many of the power plants and transmission lines are outdated.

Another challenge facing the electricity supply network is a dependence on imported fuel. Cuba relies heavily on oil imports to fuel its thermal power plants, which can be costly and subject to disruptions in supply. The country’s efforts to increase the use of renewable energy sources could help reduce its dependence on imported fuel, but this will require further investment and the development of new infrastructure.


In summary, the electricity supply network in Cuba has undergone significant changes in recent years, with efforts being made to improve the service’s quality and reliability. However, challenges remain, including a lack of investment, outdated infrastructure, and a dependence on imported fuel. The Cuban government will need to continue to invest in the sector and pursue a sustainable energy policy to ensure a reliable supply of electricity for its citizens.

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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:

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