Delivery Systems

Page 6 of 15

Electric transmission substation

Transmission substations are located where two tra

Electric transmission system

Electric transmission is the movement of large amo

Electric units

Electric units include units of demand or capacity

Electrical service

Electrical services are provided in different conf

Electricity

Electricity is simply the flow of electrons throug

Electricity losses

Losses of electricity through the delivery system

Emergency response (natural gas)

Responding to emergencies in order to protect life

Emergency valves

Emergency valves are any valves used to isolate pi

End user

The term end user refers to a consumer of energy t

Energy efficiency

Energy efficiency reduces overall energy intensity

Energy storage standard

An energy storage standard is a regulatory mandate

Essential facility

An essential facility is a gas or electric company

Essential reliability service (ERS)

ERS provide bulk system operators with voltage con

Financial transmission rights

To hedge against the financial uncertainty, ISOs o

Frequency

In an AC system, frequency is the rate at which th

Frequency regulation

Frequency regulation is used to manage the second-

Frequency response

Frequency response is the ability of a bulk electr

Fuel cell

A fuel cell is an electrochemical device that conv

Future electric grid

The electric grid is rapidly transforming from a o

Gas combustion turbine

Gas combustion turbines allow a form of power gene