IPM v.4.10 Parsed File User Guide 

IPM output files report aggregated results for "model" plants (i.e., aggregates of generating units with similar operating characteristics

IPM results at the generating unit level. This document defines the column headers found in IPM v.4.10 parsed files. 

Field Name Column Definition Key to Recur

Year A The model run year from which the parsed results were derived. Unique Id B 

The unique identifier assigned to a boiler or generator within a plant. It consists of the Plant ID (or ORIS Code), an indication of whether the unit is a boiler ("B"), generator ("G"), or committed unit ("C"), and the Unit ID. For example, for the Unique ID "113_B_1", "113" is the Plant ID, "B" indicates that this unit is a boiler, 

and "1" indicates that the ID of the boiler is 1. 

Plant Name C The plant's name. Plant Type D 

The type of electric generating unit, usually defined by the "prime mover" and/or fuels burned. "Prime mover" refers to the machine (e.g., engine, turbine, water wheel) that drives an electric generator or the device that converts energy to electricity directly (e.g., photovoltaic solar and fuel cell(s)). 

Biomass Coal Steam Combined Cycle Combustion Turbine Fossil Waste Fuel Cell Geothermal Hydro IGCC Landfill Gas Municipal Solid Waste Non-Fossil Waste Nuclear O/G Steam Pumped Storage Solar Tires Wind 

State Name E State Code F County G County Code H 

These four fields identify the geographic location of the unit. The State Code is the 

FIPS State Code, and the County Code is the FIPS County Code. New units have blanks in these columns, while committed units have zeros. Federal information processing standards (FIPS) codes are a standardized set of numeric or alphabetic 

codes issued by the National Institute of Standards and Technology (NIST) to ensure uniform identification of geographic entities through all federal government agencies. 

Plant ID I 

A unique identifier assigned to each power plant in NEEDS. While the ORIS code is unique for each plant, all generating units within a plant will typically have the same ORIS code. For committed units (i.e., those not currently operating, but firmly anticipated to be operational in the future), the entry in this field might be a dummy ORIS code assigned as a placeholder unique ID to the committed plant. (Note: ORIS originally referred to the Office of Regulatory Information Systems in the 
Field Name Column Definition Key to Recur

Department of Energy (DOE) Energy Information Administration (EIA) which was responsible for assigning unique identification codes to utility power plants.) 

Unit ID J The identifier assigned to each unit/boiler in a given plant. Capacity (MW) K 

The net summer dependable capacity (in megawatts) of the unit available for generation for sale to the grid. Net summer dependable capacity is the maximum capacity that the unit can sustain over the summer peak demand period reduced by the capacity required for station services or auxiliary equipment. 

Fuel Type L The fuels type selected by the model for combustion during the given run year 

Coal Fwaste NaturalGas Oil Other Pet. Coke Waste Coal Cell: boilers that combine 2-3 svertical assembly installed on twithin a furnace. Cyclone: A special type of burashes. Combustion occurs withhigh temps which turn the ash bottom" furnace often accompaFBC: “fluidized bed combustionupward-blowing jets of air, resusolids and a tumbling action whchemical reactions and heat traStoker/SPR: stoker boilers whea moving grate or chain which zone in which air is drawn throuThe carbon gradually burns offend into a receptacle, from whiTangential (also referred to as furnace corners in multiples of conjunction with the opposing ccircular swirling combustion zoTurbo (wall fired burner): Burnvolatile bituminous coals (Riley Hour glass shaped furnace with downwards. Vertical: standard furnace (ass

Firing M 

This field, which applies only to boilers, indicates the burner type and configuration 

(e.g., cell, cyclone, FBC (fluidized bed combustion), stoker/SPR, tangential, or vertical). A blank appears in instances where the firing characteristics of a boiler are 

unknown or the unit is a not a boiler. 

Wall: standard burner / furnace located on the front and rear fu

Bottom N 

This field, which applies only to boilers, indicates whether the bottom of the combustion chamber is "wet" (i.e., ash is removed from the furnace in a molten state) or "dry" (i.e., the boiler has a furnace bottom temperature below the ash 

Dry Wet 
Field Name Column Definition Key to Recur

melting point and the bottom ash is removed as a solid). A blank appears in instances where the bottom characteristics of a boiler were not known or the unit was not a boiler. 

Hg EMF Inputs O 

This field shows the combination of SO2 scrubbers, NOX post-combustion controls, 

and particulate matter controls that already exist at a unit. The entries in this column are compiled from the "NOx Post-CombControl," "Wet/DryScrubber" and "Particulate Matter Type" fields. Together with the entry in the "Firing" and "Modeled Fuels" fields, the entries in this field are used for the assignment of the Emission Modification Factors (EMFs) for mercury as shown in the six subsequent "Controlled Hg EMF" and "Uncontrolled Hg EMF" fields. The EMFs enable the model to capture mercury emission reductions that are a function of the rank of coal burned (bituminous, subbituminous and lignite), the specific burner type, and the configuration of SO2, NOX, and particulate matter control devices. Consolidating 

the controls that impact mercury reductions into this field helps to insure that the correct EMFs are assigned to each unit. Note that EMFs are metric of the extent of mercury emission reduction achieved by these non-mercury controls, and do not include the presence or impact of mercury-specific controls (e.g., ACI). 

AA Advanced Overfire ABF Biased Firing (alternaBOOS Burners-Out-Of-ServCM Combustion ModificaCO Combustion OptimizaDLNB Dry Low NOx BurnerFR Flue Gas RecirculatioFU Fuel Reburning H2O Water Injection LA Low Excess Air LN Low NOx Burner LNB Low NOx Burner TecLNBO Low NOx Burner TecLNC1 Low NOx Burner TecLNC2 Low NOx Burner TecLNC3 Low NOx Burner Tec

coupled/Separated O

LNCB Low NOx Cell Burner LNF Low NOx Furnace MR Methane Reburn N2 Nitrogen NDI Nitrogen Diluent InjecNGR Natural Gas Reburn NH3 Ammonia Injection OFA Overfire Air other Other 

NOX Comb Control P This field indicates the NOX combustion controls which are in existence at a 

generating unit before the model is run. Combustion controls reduce NOX

emissions during the combustion process generally by regulating flame characteristics such as temperature and fuel-air mixing. 

ROFA Rotating Overfire Air 
Field Name Column Definition Key to Recur

SC Slagging SOFA Stationary Overfire ASTC Staged Combustion STM Steam Injection WIR Underfire Air 

Retrofit Control 1 Q Retrofit Control 2 R 

The emission control technology retrofits that the model projects will be installed on the unit. Note, the model can retrofit units with control technologies at two different stages. Retrofit Control 1 shows the control technologies installed in stage 1. Retrofit Control 2 shows the control technologies installed in stage 2. Early retirement, though not a control, is treated as a retrofit in the modeling and is therefore included in the column. Early retirement indicates that the model projected the unit to retire early. 

S

CC Early Retirement EarCoal Early Retirement EarCT Early Retirement EarMercury Control ACI Mercury Control / Coal Early Retirement 

ACI sub

O/G Early Retirement EarSCR Sele

coa

SCR - O/G Steam Sele

oil/g

Scrubber ScrScrubber / Mercury Control ScrScrubber / SCR ScrScrubber / SNCR Scr

Retrofit SO2/NOx Controls S 

Summarizes all of the control technologies that a unit has put on in stage 1 and stage 2. This column combines the information that appears in the Retrofit Control1 and Retrofit Control2 columns. The retrofits are cumulative to the year for which the run is parsed. For instance, if the parsed file is for 2020, it will include all retrofits projected by the model for the unit through 2020. 

SNCR SNC

Fossil Unit? T Indicates whether a unit is fossil-fuel fired Fossil Non-Fossil Summer Fuel Use (TBtu) U Projected fuel consumed (TBtu) at the unit in May - September during the year for which the run was parsed. Total Fuel Use (TBtu) V Projected fuel consumed (TBtu) at the unit during the year for which the run was parsed. Summer Subbituminous Fuel Use (TBtu) 

W 

Total Subbituminous Fuel Use (TBtu) X 

These six columns give the projected coal consumption (TBtu), by coal rank, during the summer months (May - September) and the year for which the run was parsed. 
Field Name Column Definition Key to Recur

Summer Bituminous Fuel Use (TBtu) Y Total Bituminous Fuel Use (TBtu) Z Summer Lignite Fuel Use (TBtu) AA Total Lignite Fuel Use (TBtu) AB Summer NOx Emission (MTon) AC Total NOx Emission (MTon) AD 

Projected NOX (MTons) emitted from the unit during the summer months (May - 

September) and year round during the year for which the run was parsed. 

Total SO2 Emission (MTon) AE Projected annual SO2 emissions (MTons) during the year for which the run was parsed. Total CO2 Emission (MTon) AF Projected annual CO2 emissions (MTons) during the year for which the run was parsed. Total Mercury Emission (Ton) AG Projected annual mercury emissions (Tons) during the year for which the run was parsed. Post Combustion Controls AH Summary of the SO2, NOX, and Mercury post-combustion controls installed at the unit during the run year. Dispatchable FGD Control AI 

One-time option that allows certain generating units in the model to install a scrubber retrofit at zero capital cost. It applies to generating units known to have 

existing scrubbers that may not be operating because the original regulatory cause for their installation is no longer present. The model will use this retrofit if the control is economical to operate, but it will not use the retrofit if the control is not economical. This “dispatchable” construct allows modeling behavior in areas 

transitioning from a more stringent to less stringent regulatory regime (for example, a state affected by CAIR but potentially not affected by the proposed Transport Rule), where some operators may have economic incentive to bypass or reduce operation of a previously installed emission control, while other operators still need to operate the control in order to comply with settlements, state rules, or other past policies regardless of the status of the CAIR program. If a scrubber appears in columns Q, R, S, or AH, this field will indicate whether it was a “dispatchable” scrubber or not. 

1 = unit has the dispatchable sc<blank> = unit does not have th

Dispatchable NOx Control AJ 

One-time option that allows certain generating units in the model to install postcombustion NOx retrofit controls at zero capital cost. It applies to generating units known to have existing post-combustion NOx controls that may not be operating because the original regulatory cause for their installation is no longer present. The model will use this retrofit if the control is economical to operate, but it will not use the retrofit if the control is not economical. This “dispatchable” construct allows 

modeling behavior in areas transitioning from a more stringent to less stringent regulatory regime (for example, a state affected by CAIR but potentially not affected by the proposed Transport Rule), where some operators may have economic incentive to bypass or reduce operation of a previously installed emission control, 

1 = unit has the dispatchable poption <blank> = unit does not have th

retrofit control option 
Field Name Column Definition Key to Recur

while other operators still need to operate the control in order to comply with settlements, state rules, or other past policies regardless of the status of the CAIR program. . If a post-combustion NOx retrofit control appears in columns Q, R, S, or AH, this field will indicate whether it was a “dispatchable” SCR or not. 

Dispatchable ACI Control AK 

One-time option that allows certain generating units in the model to install an ACI retrofit at zero capital cost. It applies to generating units known to have existing ACI installations that may not be operating because the original regulatory cause for their installation is no longer present. The model will use this retrofit if the control is economical to operate, but it will not use the retrofit if the control is not economical. This “dispatchable” construct allows modeling behavior in areas transitioning from a more stringent to less stringent regulatory regime, where some operators may have economic incentive to bypass or reduce operation of a previously installed emission control, while other operators still need to operate the control in order to comply with settlements, state rules, or other past policies regardless of the status of the original regulatory program. If an ACI installation appears in columns Q, R, or AH, this field will indicate whether it was a “dispatchable” ACI installation or not. 

1 = unit has the dispatchable A<blank> = unit does not have th