What is battery energy storage?

Battery energy storage systems are made up of thousands of individual lithium-ion battery cells, which are grouped into modules and installed on racks inside of durable, weatherproof metal containers (also called enclosures). The enclosures are typically 15 to 30 feet long, five to ten feet wide, about ten feet tall and may be clustered in groups of four. The batteries and control systems are accessible from the outside via a cabinet-style design.

Typically, a stand-alone battery energy storage system connects to the wider grid at an electric substation. The electricity used to charge the batteries is generated by the power that other power plants are injecting into the grid. The batteries charge when there is extra power available on the grid, like overnight, or when customers cannot get that power due to transmission limitations. When the batteries discharge, or put power back onto the grid, it is delivered to customers using power at that time, and especially at times of peak customer use. The batteries discharge when customers need power most, like hot days when the air conditioning is running or during winter cold snaps when customers need enough power for heating.

For more information on battery energy storage, please visit the EPA site on battery storage.

A battery storage facility provides increased energy capacity, peak shaving, voltage support, and frequency regulation; that is, a battery storage facility has the power and unique characteristics to make the electric grid perform better by providing these different supporting functions. Energy storage may defer the need for ratepayers to fund new transmission and generation infrastructure. Battery energy storage facilities can operate like gas peaker plants but in a cleaner way, providing zero emission generation; reducing the need for new coal, oil, and gas plants; and reducing emissions from these facilities.

Once construction is completed and the facility is operational, there will be very little activity at the facility. Staff will visit the facility as necessary to preemptively ensure smooth operations and inspect the equipment, run diagnostic checks, and groom vegetation, typically once or twice per month. The facility will be remotely operated and monitored 24/7 through state-of-the-art technology, including alarms and safety systems.

Once construction is complete, Jupiter expects no observable increase in traffic, dust, glare, waste, or water use under normal operations. The facility will produce little noise and no regular nighttime lighting is anticipated. Operations will comply with all local, state, and federal ordinances and regulations.