Technical FAQs 3

How much battery storage capacity will be installed in Rarotonga?

Additional battery storage capacity consisting of 1 megawatt (MW)/4 megawatt hour (MWH) for grid stability will be installed in the diesel power station in Avatiu Valley, Rarotonga, and 2 MW/8 MWh for load-shifting capability will be installed at the Rarotonga International Airport.

Which energy storage technologies are included in the 2020 cost and performance assessment?

The 2020 Cost and Performance Assessment provided installed costs for six energy storage technologies: lithium-ion (Li-ion) batteries, lead-acid batteries, vanadium redox flow batteries, pumped storage hydro, compressed-air energy storage, and hydrogen energy storage.

What is the energy storage Grand Challenge (ESGC)?

The Department of Energy’s (DOE) Energy Storage Grand Challenge (ESGC) is a comprehensive program to accelerate the development, commercialization, and utilization of next-generation energy storage technologies and sustain American global leadership in energy storage.

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