David Biegler

Guaranty Financial Group, Inc. provides banking and insurance services. The company through its subsidiary offers lines of credit, working capital loans, loans for acquisition, expansion and development facilities, borrowing base loans, real estate construction loans, regional and national homebuilder loans. The company was founded in 1986 and is headquartered in Austin, TX.

Southcross Energy LLC engages in the provision of natural gas processing and transportation services. The company was founded in 2009 and is headquartered in Dallas, TX.

The National Petroleum Council operates as a council for national petroleum. The private company is based in Washington.

Dynegy, Inc., a holding company provides electricity, natural gas and natural gas liquids to markets and customers throughout the United States through its subsidiaries. The company owns and operates a diverse portfolio of assets, including power plants and gas processing plants. It provides wholesale power to utilities, cooperatives, municipalities, and commercial and industrial customers. It gathers and processes natural gas, and fractionates, stores, transports, and markets natural gas liquids. The company was incorporated in the state of Illinois in 1999 and is based in Houston, Texas.

Dynegy, Inc. is a holding company, engages in the production and sale of electric energy, capacity, and ancillary services. It operates through the following segments: PJM, NY/NE, ERCOT, MISO, and CAISO. The PJM segment comprises of power generation facilities located in Ohio, Pennsylvania, Illinois, Virginia, West Virginia, and New Jersey. It offers wholesale electricity and provides transmission planning. The NY/NE segment consists of power generation facilities located in Massachusetts, Connecticut, Maine, and New York. It dispatches power plants to meet system energy and reliability needs and settles physical power deliveries. The ERCOT segment serves the state of Texas over a high-voltage transmission system. The MISO segment includes three power generation facilities in Illinois. The CAISO segment contains two power generation facilities located in California. The company was founded in 1984 and is headquartered in Houston, TX.

Southcross Energy Partners LLC provided natural gas gathering, processing, treating, compression and transportation services, and natural gas liquids (NGL) fractionation and transportation services. It also sources, purchased, transported, and sold natural gas and NGL's to its power generation, industrial, and utility customers primarily under fixed-spread contracts. The company was founded in 2009 and is headquartered in Houston, TX.

Part of Targa Resources Corp., Southcross Energy Partners GP LLC is a company that provides natural gas transportation services. The company is based in Dallas, TX.

Regency Gas Services LP offers natural gas liquids. The company was founded by David Wayne Beigler and Douglas E. Dormer, Jr. on March 4, 2006 and is headquartered in San Antino, TX.

Southwest Research Institute is a research and development organization. It offers technical services in engine design and development, emissions certification testing, fuels and lubricants. The firm provide services to automotive and transportation, biomedical and health, chemistry and materials, defence and security, electronics and automation, energy and environment, manufacturing and construction industries. The company was founded in 1947 and is headquartered in San Antonio, TX.

Southcross Holdings LP owns and operates gathering and fractionation assets in the midstream energy sector. Its services include natural gas gathering, treating, compression and transportation, as well as natural gas liquids fractionation and delivery to end-user markets. The company is headquartered in Dallas, TX.

Education is Freedom operates as a non-profit organization. Its programs include middle school, high school, college, workforce development training, community connection, intern fellows program, and service works. The company was founded by James W. Keyes in 2002 and is headquartered in Dallas, TX.

Alliance Holdings GP LP is in the partnership with Alliance Resource Partners, L.P., which engages in the production of of steam and metallurgical coal with varying sulfur and heat contents. The ARLP Partnership operates through the following geographical segments: Illinois Basin; Appalachia; and Other and Corporate. The company was founded in 2005 and is headquartered in Tulsa, OK.