What is an energy storage system?

An energy storage system is something that can store energy so that it can be used later as electrical energy. The most popular type of ESS is a battery system and the most common battery system is lithium-ion battery.

Who should use this energy storage guide?

This guide is designed specifically for homeowners with single-family or two-family homes interested in installing energy storage systems.

Can energy storage systems be installed in certain areas?

Energy storage systems can pose a potential fire risk and therefore shouldn’t be installed in certain areas of the home. NFPA 855 only permits residential ESS to be installed in the following areas:

Are new single-family buildings energy storage ready?

To facilitate the future installation of battery storage systems, newly constructed single-family buildings with one or two dwelling units are required to be energy storage ready.

What is a battery energy storage system?

Battery energy storage systems (BESS) stabilize the electrical grid, ensuring a steady flow of power to homes and businesses regardless of fluctuations from varied energy sources or other disruptions. However, fires at some BESS installations have caused concern in communities considering BESS as a method to support their grids.

How many batteries can be installed in a house?

You can install a maximum of 80 kWh of batteries on exterior walls of the home, and a maximum of 80 kW of batteries inside of a detached structure. If batteries are installed, either inside the home or in an attached garage, a smoke detector must be installed in the room or closet where the batteries are being installed.