Reserve Sharing Group Capacity Savings

The electric grid operates like a finely tuned machine that must constantly balance electricity supply and demand. To maintain this balance, the organizations responsible for operating the grid, known as Balancing Authorities (BAs), keep reserve generation available that can respond quickly if a power plant, transmission line, or other critical resource suddenly becomes unavailable.

Without reserve sharing, each BA must carry enough reserves to cover its own largest potential loss of generation. The WPP Reserve Sharing Group allows members to pool their reserves and collectively prepare for the single largest loss within the entire group. By sharing resources across a larger footprint, members can maintain the same high level of reliability while carrying fewer reserves than they would need on their own.

The result is a more efficient use of generation resources, lower operating costs, and savings for participating utilities and their customers. A simple way to think about the Reserve Sharing Group is as an insurance pool for the electric grid: members share responsibility for responding to unexpected events, reducing costs while maintaining reliability for everyone.