| Fuel Type(Short Description) | Fuel Type(Long Description) | Renewable?(true/false) | Biomass?(true/false) |
|---|---|---|---|
| ARS | Air Source | true | false |
| ALT | Alternate Use | true | false |
| BIG | Biogas | true | false |
| BIM | Biomass | true | true |
| BM2 | Biomass (WI Eligible) | true | true |
| BAF | Biomass - Alt fuels from plant oils or animal fats | true | true |
| BLQ | Biomass - Black Liquor | true | true |
| RWB | Biomass - Recovered Woody Biomass | true | true |
| BSW | Biomass - sustainably managed woody biomass | true | true |
| AB1 | Biomass – Agricultural Crop (closed loop) | true | true |
| AB2 | Biomass – Agricultural Crop (open loop) | true | true |
| BAW | Biomass – Agricultural Waste | true | true |
| BA3 | Biomass – Animal Waste – Other | true | true |
| BA2 | Biomass – Animal Waste – Poultry | true | true |
| BA1 | Biomass – Animal Waste – Swine | true | true |
| BBW | Biomass – Biological Waste | true | true |
| BHV | Biomass – Herbaceous Vegetative Matter or Residue | true | true |
| BID | Biomass – Incineration of Construction Debris | true | true |
| BGR | Biomass – Incineration of Garbage | true | true |
| BBL | Biomass – Liquids | true | true |
| BNV | Biomass – Non vegetation waste | true | true |
| PA1 | Biomass – Paper-derived | true | true |
| RDF | Biomass – Refuse-Derived Fuel | true | true |
| SLW | Biomass – Sludge Waste | true | true |
| BTW | Biomass – Treated Organic Waste Biomass | true | true |
| BUW | Biomass – Untreated Organic Waste Biomass | true | true |
| WDR | Biomass – Wood – Railroad Ties | true | true |
| WDU | Biomass – Wood – Utility Poles | true | true |
| WDL | Biomass – Wood – Wood Waste Liquids | true | true |
| WDS | Biomass – Wood – Wood/Wood Waste Solids | true | true |
| CO1 | Coal | false | false |
| CHE | Compost Heat Exchange System | true | false |
| CON | Conversion of Fuel from Natural Gas Pipeline | true | false |
| DI1 | Diesel | false | false |
| FLR | Flared Gas | false | false |
| FC1 | Fuel Cells | true | false |
| BFG | Gas – Blast-Furnace Gas | true | false |
| GE1 | Geothermal Energy | true | false |
| GWS | Ground And Water Source Heat Pump | true | false |
| HY2 | Hydro (WI Eligible) | true | false |
| H2O | Hydroelectric Water | true | false |
| HYD | Hydrogen | true | false |
| JET | Jet | false | false |
| MS1 | Municipal solid Waste | true | false |
| NG1 | Natural Gas | false | false |
| NRA | Non-Renewable Additives | false | false |
| NON | Not Listed - Contact the M-RETS Administrator | false | false |
| NU1 | Nuclear | false | false |
| OIL | Oil | false | false |
| RNG | Renewable Natural Gas | true | false |
| SO1 | Solar | true | false |
| SOT | Solar Thermal | true | false |
| OC1 | Tidal or Wave | true | false |
| TDF | Tire Derived Fuel | true | false |
| WHR | Waste Heat Recovery | true | false |
| WO1 | Waste Oil | false | false |
| WND | Wind | true | false |
| WD2 | Wind (WI Eligible) | true | false |
| WBS | Woody Biomass System | true | false |