Saving electricity for when it is needed

Electricity must be used at about the same time it is generated unless there is a way to store it. Because electricity moves through the grid almost instantly, grid operators are constantly working to keep the amount entering the system in balance with the amount customers are using.

Battery energy storage systems (BESS) can help maintain that balance. These systems work by using direct current (DC) rechargeable batteries to store energy when demand is lower and converting the energy back to alternating current (AC) before returning it to the grid when demand rises and more power is needed. This storage option can help stabilize the grid, improve reliability, and reduce costs by smoothing out fluctuations in energy supply and demand.

Maryland has taken several steps to expand energy storage as part of its strategy to improve grid reliability and address growing electricity demand. Legislation enacted in 2025 directed the Maryland Public Service Commission (PSC) to oversee solicitations for up to 1,600 megawatts (MW) of transmission-connected energy storage and established a separate 150-MW goal for distribution-connected projects developed or procured by investor-owned utilities. A companion law established statewide siting and approval requirements for front-of-the-meter storage facilities. These measures build on a 2023 law that set a statewide goal of up to 3,000 MW of cost-effective energy storage by 2034.

Together, these efforts are intended to expand storage as electricity demand grows and provide grid operators with another tool for maintaining reliability.

Next Generation Energy Act as Senate Bill 937/House Bill 1035

Senate Bill 931/House Bill 1036, the Renewable Energy Certainty Act