Definitions for "Firm Energy"
Electricity transmission service offered to customers under a filed rate schedule that anticipates no planned interruption. See non-firm energy
Electrical Energy backed by capacity, interruptible only on conditions as agreed upon by contract, system reliability constraints, or emergency conditions and where the supporting reserve is supplied by the seller.
Electrical energy supported by sufficient capacity, interruptible only on conditions agreed upon by contract. To guarantee firm energy, the seller will provide all ancillary services.