Capstone Energy Services

Energy Basics

Terms A-Z


A schedule detailing terms, conditions, and rate information applicable to various types of services.

Tariff Gas

Gas purchased from local distribution companies or pipelines under a currently effective sales rate.


Use of an electrical apparatus transmitting data to a distant point for indicating, recording, or integrating the values of a variable quantity.


A unit of heating value equivalent to 100,000 British thermal units (Btu).


Total of transportation volumes and tariff sales; all gas volumes delivered.


The movement or transfer of electric energy over interconnected high voltage lines. Transmission is considered to end when the energy is transformed to a lower voltage for distribution to consumers.


The act of moving gas from a designated receipt point to a designated delivery point pursuant to the terms of a contract between the transporter and the shipper. Generally it is the shipper's own gas which is being moved.

Transportation Agreement

An agreement between a shipper and transportation company which defines the terms and conditions of the transportation services and transportation transfer to be provided.

Transportation Service

The act of moving gas from a receipt point to a delivery point pursuant to a contract between the shipper and the transporter. To the extent the shipper has paid for guaranteed, high-priority capacity in the pipeline, that shipper is entitled to firm service. Less expensive, lower-priority transportation.


A legal entity which has the capability of providing the service of transporting gas. Transporter includes gathering companies, pipeline companies and local distribution companies.

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.

Learn More

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