DCP Midstream Partners, LP is a midstream petroleum services company.
SM Energy is an independent energy company engaged in acquisition, exploration, development, and production of crude oil, natural gas, and natural gas liquids.
PDC Energy is an independent exploration and production company, acquiring, exploring for, developing and producing crude oil, natural gas and natural gas liquids.
Cimarex is an exploration and production company.
Whiting Petroleum is an independent exploration and production company with an oil focused asset base.
Real Goods Solar Inc. is a residential solar power integrator doing business as RGS Energy.
Bonza Creek Energy is an exploration and production company focused on the extraction of oil and associated liquids-rich natural gas.
Enservco Corporation provides a variety of well-site services to the domestic on-shore oil and gas industry.
Resolute Energy Corporation is an independent oil and gas company.
QEP Resources is a leading independent natural gas and crude oil exploration and production company.
TransMontaigne Partners is a provider of terminaling, storage, transportation, and related services to the energy industry.
Hallador Energy Company is an oil and gas exploration company focused on developing coal reserves in the Illinois Basin.