Administración Nacional de Combustibles, Alcohol y Portland - ANCAP
http://www.ancap.com.uy/

"The Oil and oil by-products refining and marketing production line represents 90% of ANCAP's business. Although in Uruguay oil resources have not been found yet , ANCAP's strategy has been to invest in oil prospecting abroad. As for product refining and marketing (Downstream), La Teja Refinery and ANCAP trademark are the most important assets for this sector.

AGL Resources Inc.
http://www.aglr.com/

"AGL Resources Inc. (NYSE: ATG) is a regional energy holding company with operations in the Southeast. Atlanta Gas Light Company, the largest natural gas distributor in the Southeast and the company's primary subsidiary, provides delivery service to more than 1.5 million customers in Georgia and Chattanooga, Tennessee. Although natural gas distribution is AGL Resources' core business, it also is engaged in other energy-related businesses, including wholesale and retail energy marketing, customer care services for energy marketers, and wholesale and retail propane sales."

Alabama Gas Company
http://www.alagasco.com/

"Alagasco serves more than 468,000 customers in cities and towns throughout Central Alabama. We buy gas from a variety of sources including conventional wells and methane wells in Alabama. We have our own storage facilities which enable us to meet your energy demands year-round, even on the coldest days. Alagasco supplies more than natural gas, though. When you choose efficient natural gas as the energy source for your home, you also get the wide range of services and support that Alagasco makes available to customers."

Alberta Energy Company Ltd.
http://www.aec.ca/

"Alberta Energy Company Ltd.'s (TSE:AEC) (NYSE:AOG) high-impact growth has created one of the largest upstream independent oil and gas companies. AEC ranks first in natural gas sales in Canada and sixth largest in North America. Alberta Energy Company is also a major gas storage developer and a pipeliner of conventional, synthetic and heavy oil in North America."

AlintaGas Limited
http://www.alintagas.com.au/

"AlintaGas is Western Australia's principal natural gas retailer and distributor. We purchase natural gas and on-sell it to more than 400,000 residential, business and industrial customers. Our customer base is primarily in the Perth metropolitan area. Other regional centres we supply with reticulated natural gas are: Geraldton, Mandurah, Bunbury, Busselton and Kalgoorlie. To the far south of the State we reticulate liquefied petroleum gas (LPG) to Albany."

Alliance Gas
http://www.alliancegas.co.uk/

"Formed in 1991, Alliance Gas has grown to become one of the UK's foremost suppliers of natural gas to commerce and industry. Alliance Gas is owned by Statoil (U.K) Limited, a wholly owned subsidiary of Statoil , the Norwegian international energy company. Employing over 18000 people worldwide, the groups diverse operations include exploration, development and production, refining and shipping. The group is the largest producer of crude oil in the North Sea and the leading transporter of Norwegian gas."

AltaGas
http://www.altagas.ca/

"AltaGas is Canada's leading independent midstream natural gas company focusing on those natural gas facilities and services necessary for the efficient movement of gas from the wellhead to the end-use customer."