2
min read
An independent system operator, or ISO, is an independent organization that handles electric grid operations, market facilitation for...
Independent System Operator (ISO)
1
min read
A power system stabilizer (PSS) is a control system installed on a generation unit that monitors variables such as current, voltage, and...
Power system stabilizer (PSS)
1
min read
Allowance for funds used during construction, commonly called AFUDC, is a regulatory method of compensating a utility for the financing...
Allowance for funds used during construction (AFUDC)
2
min read
Area control error, commonly called ACE, is a quantity used in operating bulk electric systems. ACE is defined as the instantaneous...
Area control error (ACE)
1
min read
AGC is a generator control system that adjusts the real power output of generators in response to control signals from the system...
Automatic generation control (AGC)
2
min read
Locational marginal pricing, commonly called LMP, is a means of pricing electricity in organized wholesale markets facilitated by...
Locational marginal pricing (LMP)
1
min read
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...
Heat rate
1
min read
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...
Gas nomination
1
min read
Administrative and general expenses are a sub-category of expenses incurred in the normal day-to-day operations of a business. Utility...
Administrative and general expenses
1
min read
When engineers design a steel gas line, they designate a required pipe minimum yield strength, often called the specified minimum yield...
Specified minimum yield strength (SMYS)
1
min read
In natural gas wholesale trading markets, bid week is the last five business days immediately preceding the first of each month. Although...
Bid week
1
min read
Use of generation is often divided into three categories — baseload, which is generation run all 24 hours of the day; intermediate, which...
Peaking generation
3
min read
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,...
Balancing (natural gas volumes)
2
min read
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...
Natural gas pipe
1
min read
The long-term balance of electric supply and demand in a specific market region is evaluated by looking at the reserve margin. The...
Reserve margin
1
min read
Automated meter reading or AMR (also sometimes called automatic meter reading) combines the electronic capabilities of newer solid-state...
Automated meter reading (AMR)
1
min read
A fuse is a device that provides protection to electrical circuits by melting a fusible link when current exceeding its rating flows...
