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An uninterruptible power supply (UPS) or uninterruptible power source is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
For large power units, dynamic uninterruptible power supplies (DUPS) are sometimes used. A synchronous motor/alternator is connected on the mains via a choke. Energy is stored in a flywheel. When the mains power fails, an eddy-current regulation maintains the power on the load as long as the flywheel's energy is not exhausted.
While continuity of power supply is an important functionality, it is not the only one: for example, a UPS system can also filter voltage spikes, voltage drops, or noise and ensures a constant frequency or guarantees a certain power quality.
The voltage distortion then can cause problems in all electrical equipment connected to that power source, including the UPS itself. It will also cause more power to be lost in the wiring supplying power to the UPS due to the spikes in current flow.
From large-scale grid storage to commercial, industrial, and residential solutions, each type serves a unique role in balancing supply and demand, enhancing reliability, and integrating renewable energy sources. This guide explores the main categories of energy storage, their technologies, and their applications in the modern energy landscape.
Battery storage power stations are usually composed of batteries, power conversion systems (inverters), control systems and monitoring equipment. There are a variety of battery types used, including lithium-ion, lead-acid, flow cell batteries, and others, depending on factors such as energy density, cycle life, and cost.
A battery energy storage system (BESS), battery storage power station, battery energy grid storage (BEGS) or battery grid storage is a type of energy storage technology that uses a group of batteries in the grid to store electrical energy.
Energy storage systems are transforming the way we produce, manage, and consume electricity. From large-scale grid storage to commercial, industrial, and residential solutions, each type serves a unique role in balancing supply and demand, enhancing reliability, and integrating renewable energy sources.
Electra serves all islands of Cape Verde except Boa Vista, where electricity and water are produced and distributed by the public-private company Águas e Energia de Boavista. Other smaller electricity producers are Cabeólica, which operates four wind parks, Águas de Ponta Preta on the island of Sal, and Electric Wind on Santo Antão.
Cape Verde is a net importer of energy, with no significant fossil energy resources. As of 2016, 176,743 tonnes of fuel (about 3,550 barrels per day) were sold on the internal market. Electricity production was 443 GWh in 2016, of which 81% from thermal power, 17% from wind power and 1.4% from solar power.
ELECTRA is a company owned by the Cape Verdean Government (85%) and Cape Verde Municipalities (15). The largest power station is located in the country’s capital (City of Praia) with an installed capacity of 31 MW, followed by the Electra Power Station in Mindelo (18.3 MW) and Sal (9 MW).
The largest power station in Cape Verde is located in the City of Praia with an installed capacity of 31 MW.