Alex Stege

Mr. Stege is a Senior Project Advisor and SCS Engineers’ National Expert on Landfill Gas Modeling. He leads SCS’s non-regulatory landfill gas (LFG) recovery modeling services to support LFG-to-Energy and high-Btu methane utilization project development. Over the past 25 years, Mr. Stege developed and refined SCS’s U.S. LFG recovery model that leverages our companywide expertise in LFG collection to assess methane recovery more accurately. This model uses a database of over 1,300 years of measured LFG flows and SCS assessments of collection system performance at over 250 landfills to empirically define LFG model input assumptions. Mr. Stege has prepared domestic and international LFG modeling/due diligence studies for hundreds of landfills in the United States and around the world for the USEPA, World Bank, International Finance Corporation, landfill owners, municipalities, and LFG project developers.
Mr. Stege also trains SCS staff on LFG modeling and is responsible for the ongoing development of SCS’s domestic and international LFG models. SCS has an advanced LFG modeling practice due in large part to Mr. Stege’s work.
Mr. Stege frequently presents on the application of LFG models to evaluate landfill methane generation and recovery at conferences hosted by organizations such as LMOP (numerous conferences); the Global Methane Initiative (GMI) Partnership [including Expos in China, India, and Canada]; the Solid Waste Association of North America (SWANA); the Environmental Research and Education Foundation (EREF); the Global Waste Management Symposium; and the International Solid Waste Association (ISWA). He has authored numerous international LMOP/GMI LFG models, and has provided training on their use. He has served as the Chairman of SWANA’s Generation and Modeling Committee for over a decade.
Contact Alex at 602-840-2596 or