Capstone Energy Services

Energy Basics

Terms A-Z


A pipe in a gas distribution or transmission system which branches away from the central and primary part of the system.

Line Loss

The amount of gas lost in a distribution system or pipeline. See also: Unaccounted for Gas

Liquefied Natural Gas (LNG)

Natural gas which has been liquefied by reducing its temperature to minus 260 degrees Fahrenheit at atmospheric pressure. It remains a liquid at -116 degrees Fahrenheit and 673 psig. In volume, it occupies 1/600 of that of the vapor at standard conditions.


The amount of electric power delivered or required at any specific point or points on a system. For gas, the amount of gas delivered or required at any specified point or points on a system; load originates primarily at the gas consuming equipment of the customers. Also, to load a pressure regulator is to set the regulator to maintain a given pressure as the rate of gas flow through the regulator varies.

Load Profile

Pattern of a customer's gas usage, hour to hour, day to day, or month to month.

Local Distribution Company (LDC)

Natural Gas Company which obtains the major portion of its gas operating revenues from the operation of a retail gas distribution system.

Lock In

Fix the price of natural gas and electricity for a specified period of time.

Lock-In Period

The future period of time that a price has been fixed.

Energy Facts

Energy Facts

Natural gas can be used as a raw material in a variety of products, including paint, fertilizer, plastics and medicines.

Natural gas produces fewer emissions than other fossil fuels, with less nitrogen, sulfur, carbon and fine particulates.

Texas produces the largest amount of natural gas in the USA.

The biggest consumer of coal in the US is the electric power sector.

There are 17,658 electric utility generators in the USA.

Energy Delivery Chains

Energy Delivery Chains

Find out more about how your energy is produced and delivered to your business.

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Energy & the Environment

Energy & the Environment

How we assist clients in responding to national environmental concerns.

  • Initiate and manage a "Green" energy procurement program
  • Evaluate national legislative and regulatory initiatives
  • Research state and local energy efficiency programs and incentives
  • Track energy use and related emissions estimate