Wärtsilä said it will supply two 10 MW / 10 MWh energy storage systems under an engineering, procurement, and construction (EPC) contract to Caribbean Utilities Company Ltd. in the Cayman Islands.
The project will be the utility’s first energy storage facilities, and is intended to help it to roughly double its renewable energy capacity on Grand Cayman, the largest of the three Cayman Islands.
The energy storage systems are expected to facilitate up to a total of around 29 MW of distributed customer-sited renewable energy resources without causing grid instability. The network connected electricity generation sources on Grand Cayman currently include 161 MW of diesel-fueled generation and 14 MW of solar photovoltaic (PV) generation.
The energy storage systems will be connected to the Hydesville, West Bay and Prospect substations, and are expected to provide power system optimization capabilities such as spinning reserve capacity, improved frequency response, and enhanced grid stability.
Each facility will include Wärtsilä’s GridSolv Quantum, a modular energy storage system, as well as the GEMS Digital Energy Platform, Wärtsilä’s energy management system.
Utility officials said they expect to realize savings on fuel costs and improved service reliability for customers on Grand Cayman.
The GEMS platform is intended to provide advantages to islanded systems, including short term overload capacity, voltage support, black starts and peak shaving.
Caribbean Utilities Company is a privately owned electricity generation, transmission and distribution utility and is the only electric utility in Grand Cayman, the largest island of the Cayman Islands, with a population of around 65,000 people.
The energy storage systems were booked during the third quarter and are expected to become operational in mid-2023.
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