An independent system operator, or ISO, is an independent organization that handles electric grid operations, market facilitation for...

A power system stabilizer (PSS) is a control system installed on a generation unit that monitors variables such as current, voltage, and...

Allowance for funds used during construction, commonly called AFUDC, is a regulatory method of compensating a utility for the financing...

Area control error, commonly called ACE, is a quantity used in operating bulk electric systems. ACE is defined as the instantaneous...

AGC is a generator control system that adjusts the real power output of generators in response to control signals from the system...

Locational marginal pricing, commonly called LMP, is a means of pricing electricity in organized wholesale markets facilitated by...

The heat rate of a power plant is a quantity that reflects the amount of fuel required to generate one unit of electrical energy. The...

A nomination is a request to move gas from one location to another under a specific contract with a pipeline. It may be made prior to the...

Administrative and general expenses are a sub-category of expenses incurred in the normal day-to-day operations of a business. Utility...

When engineers design a steel gas line, they designate a required pipe minimum yield strength, often called the specified minimum yield...

In natural gas wholesale trading markets, bid week is the last five business days immediately preceding the first of each month. Although...

Use of generation is often divided into three categories — baseload, which is generation run all 24 hours of the day; intermediate, which...

Users of natural gas are rarely able to forecast exactly how much gas they will need on a given day. Production rates go up and down,...

Pipe is used to move natural gas from one location to another and can also be used as a form of storage. Pipe size and type vary...

The long-term balance of electric supply and demand in a specific market region is evaluated by looking at the reserve margin. The...

Automated meter reading or AMR (also sometimes called automatic meter reading) combines the electronic capabilities of newer solid-state...

A fuse is a device that provides protection to electrical circuits by melting a fusible link when current exceeding its rating flows...

Backhaul is a contractual transaction where natural gas is moved on a pipeline in the opposite direction of flow. For example, on a...