The amount of electric energy that is certain to be available at all times from any given plant or system, or under any given contract even under adverse conditions such as when a given power plant is out of service.

Power or power-producing capacity covered by a commitment to be available at all times during the period.

Power supplies that are guaranteed to be delivered under terms defined by contract.

Energy sales which, although not subject to interruption for economic purposes, may be interrupted under force majeure conditions.

The highest quality sales of electric transmission service offered to customers under a filed rate schedule that anticipates no planned interruption.

 Energy considered assurable to the customer to meet all agreed upon portions of a customer’s load requirements over a defined period.  On BPA’s system, electric energy produced under critical water conditions. imbalance energy:  Energy used to resolve a discrepancy between the amount of power a seller contracted to deliver and the amount delivered [..]

The amount of electric energy that is certain to be available at all times from any given plant or system, or under any given contracts, even under adverse conditions such as when a given plant is out of service. Also known as firm power.

Electricity guaranteed by a power supplier to be available at all times.

Energy sales which, although not subject to interruption for economic purposes, may be interrupted under force majeure conditions.