Natural Resource Group, LLC specializes in offering environmental and public affairs consulting services to the energy industry. The firm offers a wide range of services in the natural gas pipelines, biofuels facilities, oil/product pipelines, liquefied natural gas (LNG)/storage and electric, gas, power sectors. Its list of clients includes Alliance Pipeline LP, Guardian Pipeline LLC, Williams Midstream, Al-Corn Clean Fuels, Red Trail Energy, Sierra Pacific Power Company, Sycamore Energy and Xcel Energy, to name a few.