| Year | Winner | Project Name | Secondary Winners |
| 2013 | Bama Companies | Bama Zero Waste Landfill – Journey: From Trash to Cash – View Presentation | Koch Nitrogen Company, LLC – Minimizing and Recapturing Anhydrous Ammonia Emissions |
| 2012 | Oklahoma Gas & Electric Co. | Positive Energy® Smart Grid Program – View Presentation | |
| 2011 | LaFarge | Industrial Ecology for a Sustainable Future project | The Bama Companies, Inc. – Bama Recycling Projects
Enogex Products LLC – Calumet Refurbishment Project ONEOK Gas Storage LLC (OGS) – OGS-Depew TEG Dehydration Unit Control |
| 2010 | AEP Public Service Company of Oklahoma | Deep Fork National Wildlife Refuge Carbon Sequestration Project | LaFarge – Developing Industrial Ecology
Terra Nitrogen, L.P. – Greenhouse Gas Abatement Project Spirit AeroSystems – Zero Municipal Landfill |
| 2009 | Goodyear Tire and Rubber Company –Download presentation | Solvent and Landfill Elimination Program | OG&E – Lesser Prairie Chicken Conservation MOA with the Oklahoma Department of Wildlife Conservation |
| 2008 | Spirit Aerosystems, Inc. Aerostructures | Waste Minimization Project | Sunoco, Inc. Tulsa Refinery – 2008 Well Redevelopment ProjectBP America Production Company – Electrification of the Red Oak Central Compressor Facility in Latimer County, OklahomaHolcim (USA), Inc – Opt for Green..A Grass Roots Movement in Conservation |
| 2007 | Terra Nitrogen, LP – Verdigris Plan | Air Emissions Condenser & Recovery Unit | Enogex Products Corporation’s Wetumka Gas Processing Plant – Wetumka Emissions Reduction ProjectTerra Industries, Inc. – Ammonium Wastewater Nitrification Treatment Unit |
| 2006 | Weyerhaeuser Company – Valliant Facility | Clean Condensate Alternative for HAP Emissions Reduction Project | John Zink Company – Compact Low NO x Process BurnerPublic Service Company of Oklahoma – The Tulsa Wave: A Public, Private and Nature PartnershipFort James Operating Company Muskogee Mill – Reducing Ammonia ReleasesHolcim, Inc. – Bio-Diesel – Putting the Fat in the Fire! |
| 2005 | Georgia-Pacific Corporation | Fuzzy Filter Effluent Recycle Project | AEP/Public Service Company of Oklahoma – Wind Power for PSO CustomersBridgestone/Firestone North American Tire, LLC – HAP-Free in ThreeJohn Zink Company – Ultra Low-NOx BurnersPublic Service Company of Oklahoma – PSO Northeastern Station 3 & 4 Reduction of Opacity EmissionsWeyerhaeuser Company – Alternative Cover for Solid Waste Disposal Facility |
| 2004 | Sinclair Oil Corporation | BP America Production CompanyNORIT Americas, Inc. Atlantic Richfield Company | |
| 2003 | BP America Production Company | Produced Water Project – Recylcing and Resuing Water Produced from Wells for Irrigation | Oklahoma Natural Gas Company – 2003 MTTA “Free Bus Ride” SponsorshipONEOK/RFS Consulting – ONEOK’s Implementation of RFS’s Environmental Management Information System (REMIS) |
| 2002 | Holcim (USA) | When The Rubber Meets the Road | |
| 2001 | Dayton Tire Company | Wildlife Habitat Development Project | BP America, Inc. – ISO 14001 Certification of Upstream Oil and Gas Projects in OklahomaKerr-McGee Corporation – Easter Oklahoma Environmental Excellence Program |
| 2000 | Phillips Petroleum Company | Dayton Tire – Waste to Landfill ReductionOGE Energy Corp – Green Team Initiatives |