Duke Energy Progress and North Carolina Eastern Municipal Power Agency filed a settlement with FERC regarding the latter using batteries to shave its peak demand.

Despite current supply chain problems, energy storage is just beginning to capture its potential, developers told the RE+ Southeast conference.

FERC conditionally approved changes to Duke's contract with municipal utilities in N.C. but ordered negotiations over how demand charges are calculated.

The D.C. Circuit said a PPA between Duke Energy and 32 municipal utility customers allows the munis to use storage to reduce their capacity charges.