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Welcome to the IECM

About the IECM

The IECM is a computer model for preliminary design and analysis of clean electricity generation technologies employing fossil fuels. It is intended for use by engineers, researchers, technology developers, and policy analysts to systematically analyze the cost and performance of fossil fuel power plants of various types and emission control designs. The IECM allows users to easily design the plant to be modeled, and to get results quickly for a variety of technology options.

Plant Components

The plant components available in version 11.5 include the following:

Power Plants

  • Pulverized Coal (PC) Units (sub-, super-, and ultra-super-critical)
  • Integrated Gasification Combined Cycle (IGCC) (GE and Shell)
  • Natural Gas Combined Cycle (NGCC)
  • Oxygen Combustion (Oxyfuel) System

NOx Control

  • Tangential, Wall and Cyclone Firing
  • Low NOx Burner (LNB)
  • Selective Catalytic Reduction (SCR)
  • Selective Non-Catalytic Reduction (SNCR)
  • Natural Gas Reburn

SO2 Control

  • Acid Gas Removal w/ Sulfur Recovery
  • Wet Limestone w/Forced Oxidation
  • Wet Limestone with Dibasic Acid Additives
  • Lime Spray Dryer
  • Mg-Lime Process

Particulate Matter Control

  • Electrostatic Precipitator (ESP)
  • Reverse Gas Fabric Filter
  • Reverse Gas Sonic Fabric Filter
  • Shake and Deflate Fabric Filter
  • Pulse-jet Fabric Filter

Mercury Control

  • Activated Carbon Injection (with and without spray cooling)
  • Intrinsic Capture of Mercury by Other Control Technologies

H2S Control

  • Selexol
  • Sulfinol
  • Hydrolyzer
  • Claus Plant
  • Beavon-Stretford Plant
  • Sulfur Plant

CO2 Capture & Storage (CCS)

  • Amine Capture
  • Ammonia Capture
  • Membrane Separation
  • Solid Sorbents PSA
  • Solid Sorbents TSA
  • Water-Gas Shift Reactor
  • Selexol Scrubber
  • Ionic Liquid
  • Chemical Looping
  • O2-CO2 Recycle (Oxyfuel)
  • CO2 Compression
  • CO2 Purification
  • Pipeline Transport
  • Utilization for Enhanced Oil Recovery (EOR)
  • Deep Saline Reservoir Storage

Water and Wastewater Systems

  • Once-Through Cooling
  • Wet Recirculating Cooling Tower
  • Dry Recirculating Cooling Tower
  • Hybrid Wet-Dry Cooling System
  • Chemical Water Treatment
  • Mechanical Water Treatment

Solid Wastes and Byproducts

  • Landfill Disposal
  • Ponding Disposal
  • Byproduct Sales

Probabilistic Analysis

A unique capability of the IECM is that it also allows the uncertainty or variability of performance and cost results to be rigorously characterized using probabilistic analysis. Uncertainties can be analyzed individually or collectively across the entire set of plant components and sub-systems.


Read more about the history of the IECM.

Contact Us

The IECM Team


Find us on YouTube (Link opens a new window)

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