Penn Virginia Corporation was founded in 1882 and is headquartered in Radnor, Pennsylvania with its additional offices in Oklahoma, Tennessee, Texas, and West Virginia.Penn Virginia Corporation is an independent oil and gas company primarily engaged in the development, exploration and production of natural gas and oil through our wholly owned subsidiary, Penn Virginia Oil & Gas Corporation, or PVOG. Penn Virginia Corporation also own partner interests in Penn Virginia Resource Partners, L.P., (NYSE: PVR), which is involved in the coal and natural resource management and natural gas midstream businesses, and Penn Virginia GP Holdings, L.P., or PVG, which owns PVR’s general partner.We have a geographically diverse asset base with core areas of operation in the East Texas, Mid-Continent, Appalachian, Mississippi and Gulf Coast regions of the United States. As of December 31, 2008, Penn Virginia Corporation had proved natural gas and oil reserves of approximately 916 Bcfe, of which 82% were natural gas and 51% were proved developed, with an SEC pre-tax PV-10 value of $908.0 million and standardized measure of discounted future net cash flows of $729.4 million.

Emerald Energy is the oil and gas exploration and production company focuses on Colombia, where it has proved and probable reserves of 13.8 million barrels of oil equivalent. Emerald Energy was awarded a contract to drill its first well in the Campo Rico oil field in 2004, and Emerald Energy Plc has since expanded its operations in Colombia. Emerald Energy also has a 50% stake in an oilfield in Syria; Gulfsands Petroleum Syria holds the remaining 50% interest. In 2009 Chinese giant Sinochem, trying to gain further access to the South American and Middle Eastern markets, moved to buy Emerald Energy for about $875 million.

Green Mountain Energy Company is the nation’s leading retail provider of cleaner energy and carbon offset solutions. Green Mountain offers residential, business, institutional and governmental customers an easy way to purchase cleaner, affordable electricity products, as well as the opportunity to offset their carbon footprint. The power is always greener on this side of the mountain. Green Mountain Energy buys and resells green power generated from hydroelectric, solar, wind, geothermal, and natural and landfill gas facilities. It has helped develop about 40 wind and solar renewable facilities around the US (which along with other green energy initiatives has led to the delivery of more than 33 million MWh of cleaner energy into the US power market). The renewable energy facilities have been responsible for avoiding the use of more than 674,340 tons of carbon dioxide, a greenhouse gas that is a primary contributor to global warming. Dutch utility Nuon and oil giant BP have invested heavily in the firm.

U.S. Oil Co., Inc. supplies refined oil products to US residents in the Midwest, and does a lot more. In addition to the wholesale distribution of oil products (its largest revenue generator), the company operates gas stations, and installs gas pumps, tanks, and other petroleum-related equipment. U.S. Oil Co., Inc. also provides plumbing and HVAC services, operates a research laboratory for environmental analysis, collects used waste oil to be processed into burner fuel, and has a metal custom manufacturing unit.Smitten with the oil distribution business, the founding Schmidt family owns and operates U.S. Oil Co.

Peyto Energy Trust (formerly PEYTO Exploration & Development) invests in long-life gas projects in Alberta's Central Deep Basin. Through subsidiary Peyto Exploration, it focuses on the Sundance and Smoky/Kakwa areas and has proved reserves of 124.3 million barrels of oil equivalent. It also operates gas plants and more than 200 miles of gas gathering pipeline. The company pursues a strategy of developing long-lived reserves requiring low operating costs in order to secure a high return on capital.

ENMAX Corporation gets the energy, distributes it, and makes sure its customers stay powered up. The company's nonregulated ENMAX Energy subsidiary supplies retail electricity to 614,000 residential and commercial customers in Alberta in Calgary, Red Deer, and Lethbridge. The unit also trades wholesale energy and provides natural gas and telecommunications services. Subsidiary ENMAX Power operates the company's regulated transmission and distribution system and provides infrastructure services. The City of Calgary controls ENMAX, which was founded in 1889, only five years after Calgary was formed.

National Oilwell Varco, Inc. designs, constructs, manufactures, and sells systems, components, and products used in oil and gas drilling and production; provides oilfield services and supplies; and distributes products, and provides supply chain integration services to the upstream oil and gas industry worldwide. National Oilwell Varco, Inc. operates through three business segments: Rig Technology, Petroleum Services & Supplies, and Distribution Services. The Rig Technology segment offers offshore and onshore drilling rigs; derricks; pipe lifting, racking, rotating, and assembly systems; rig instrumentation systems; coiled tubing equipment and pressure pumping units; well workover rigs; wireline winches; and cranes. The Petroleum Services & Supplies segment manufactures, rents, and sells consumable goods for use in drilling operations, including drill pipe, wired drill pipe, transfer pumps, solids control systems, drilling motors, drill bits, reamers and other down hole tools, and mud pump consumables. National Oilwell Varco, Inc. primarily serves drilling contractors, shipyards and other rig fabricators, well servicing companies, pressure pumping companies, national oil companies, independent oil and gas companies, supply stores, and pipe-running service providers. National Oilwell Varco, Inc. has joint venture agreements with Schlumberger, Ltd. and Austrian based Voestalpine Group. National Oilwell Varco, Inc. was founded in 1862 and is based in Houston, Texas.

SmartestEnergy is licensed as an electricity supplier, a natural gas supplier and a natural gas shipper. The company began trading in October 2001, primarily to enable smaller embedded generators of primarily renewable energy to gain access to the deregulated energy market in the UK. SmartestEnergy relies on its quick-wittedness to survive in the highly competitive UK energy trading sector. The company, a subsidiary of leading Japanese trading company Marubeni, primarily markets electricity in the deregulated UK market through partnerships with independent power producers, including its sister company Marubeni Europower. SmartestEnergy also trades natural gas and other energy commodities, provides market analysis and risk management services, and provides retail energy supply services to commercial and industrial customers.

CSV markets and distributes finished petroleum products for home and industry, as well as for resale through a network of retailers and associate marketers. CityServiceValcon name represents the combination of two long-standing petroleum marketers, City Service and Valcon Distributing, with roots in Kalispell, Montana dating to the 1930's. The companies joined forces in October of 2003, combining facilities, product lines and personnel to strengthen CityServiceValcon long-term position in a shrinking field of peers. CityServiceValcon corporate office is located in picturesque Kalispell, near Glacier National Park. Through strategically positioned plants and support offices, CityServiceValcon serve customers from the Pacific Northwest to the Rockies and Plains states.

Energy Transfer Equity, L.P., through its direct and indirect investments in the limited partner and general partner interests in Energy Transfer Partners, L.P., engages in midstream, intrastate, and interstate transportation of natural gas, as well as in storage of natural gas in the United States. The company’s Intrastate Transportation and Storage segment engages in the ownership and operation of natural gas transportation pipelines and natural gas storage facilities. As of December 31, 2009, it owned and operated approximately 7,800 miles of natural gas transportation pipelines and 3 natural gas storage facilities. This segment sells natural gas to electric utilities, independent power plants, local distribution companies, industrial end-users, and other marketing companies on the Houston pipeline system. Its Interstate Transportation segment involves owns and operates interstate natural gas pipeline. It owned and operates approximately 2,700 miles of interstate natural gas pipeline with an additional 180 miles under construction. The company’s Midstream segment engages in the ownership and operation of in service natural gas gathering pipelines, natural gas processing plants, natural gas treating facilities, and natural gas conditioning facilities. This segment owned and operated approximately 7,000 miles of in service natural gas gathering pipelines, 3 natural gas processing plants, 11 natural gas treating facilities, and 11 natural gas conditioning facilities. Its Retail Propane segment operates a retail distribution network consisting of approximately 440 customer service locations in approximately 40 states. The company was formerly known as La Grange Energy, L.P. Energy Transfer Equity, L.P. was founded in 2002 and is based in Dallas, Texas.

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