AES Dominicana announced that it brought online 20 MW of new battery-based energy storage arrays at two sites in the Dominican Republic, which played a key role in maintaining grid reliability in September when Hurricanes Irma and Maria struck the island. The two 10 MW arrays, which were supplied by AES Energy Storage, are the first of their kind in Central America and the Caribbean. Located on sites in the Santo Domingo region, both arrays are providing critical grid reliability services for the island by improving the efficiency and contributing to the stability of the Dominican Republic’s interconnected national electricity system (SENI).
AES Dominicana is using its Andres and Los Mina DPP Advancion energy storage arrays to provide fast, accurate frequency control to the Dominican grid, balancing second-to-second variations between electricity consumed and produced. By adding energy storage instead of utilizing existing thermal power plants to maintain frequency, the Dominican grid operator can enable the power plants on the island to run at their most efficient generating level while the battery systems absorb and discharge energy on the grid as needed. AES Dominicana’s 20 MW of energy storage is providing fast-response, critical reliability services that would otherwise be performed by a traditional thermal power plant three times the size.
From supplying day-to-day balancing services and flexible peaking capacity to making island grids more resilient in the face of extreme weather events, advanced energy storage can provide island utilities with the critical and cost-effective flexible resource they need to provide reliable power to their communities.
Source: AES Energy Storage