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Aspen HYSYS

by AspenTech

Steady-state and dynamic process simulator focused on oil and gas, refining and gas processing. It is widely used by EPC contractors and operators for process design, equipment sizing and safety studies.

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Specification

Vendor
AspenTech · Emerson
Categories
Process Simulation
Phase
EEngineering
Status
Active
Deployment
Desktop
Licensing
Commercial licence
Standards
None documented
Official site
aspentech.com

Capabilities

  1. aSteady-state and dynamic process simulation
  2. bOverpressure protection and relief analysis
  3. cDistillation hydraulics and heat-exchanger design
  4. dHybrid first-principles/AI models
  5. eOperator training simulator deployment

Assessment

The benchmark simulator for oil and gas and refining. Its depth and the size of its user community make it the safe default for EPC process teams in hydrocarbons.

  1. Capability25%10/10

    Steady-state and dynamic simulation with relief analysis, column hydraulics, exchanger design and operator-training deployment.

  2. Interoperability20%7/10

    Works across the AspenTech portfolio; exchange with third-party design tools is mostly file- and partner-based.

  3. Scale15%9/10

    Used from feasibility studies to refinery-wide models and dynamic safety studies.

  4. Usability15%7/10

    Familiar workflows and abundant training make it productive for process engineers.

  5. Deployment10%6/10

    Primarily desktop software; cloud options are less central in public material.

  6. Ecosystem15%10/10

    The most widely taught and specified simulator in oil, gas and refining, now part of Emerson.

Strengths

  • Steady-state and dynamics in one tool
  • Relief and safety study coverage
  • Largest pool of trained engineers

Considerations

  • Premium licensing
  • Chemicals-heavy work may suit Aspen Plus better
  • Cloud deployment is not its strong suit

Editorial assessment from public documentation, 23 October 2026. Not a hands-on benchmark. Methodology

In the same circuit · Process Simulation

  1. 01
    Aspen HYSYSAspenTech
    84
  2. 02
    Aspen PlusAspenTech
    81
  3. 03
    AVEVA Process SimulationAVEVA
    77
  4. 04
    SymmetrySLB
    73
  5. 05
    Petro-SIMKBC (A Yokogawa Company)
    71
  6. 06
    UniSim Design SuiteHoneywell
    71
  7. 07
    AVEVA PRO/II SimulationAVEVA
    70
  8. 08
    gPROMS ProcessSiemens
    70
  9. 09
    ProMaxBryan Research & Engineering
    68
  10. 10
    CHEMCADDatacor
    67
  11. 11
    DWSIMDWSIM
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Compare head to head

Documented integrations and data exchange, in either direction.

Sources

  1. Aspen HYSYSAspenTech · accessed 22 October 2026

Plate updated 22 October 2026 · revision 1