Dynamic Simulation Modelling (DSM)

Dynamic Simulation Modelling (DSM)

Dynamic Simulation Modelling (DSM) is a software package used to model the energy performance of typically larger/complex commercial buildings which require Level 5 EPCs.

DSM uses 3D modelling on Level 5 commercial buildings, identified from specific features such as atriums, automatic blind control and ventilation with enhanced thermal coupling.

Typical examples of level 5 buildings include airport terminals, shopping centres and skyscrapers. If you are unsure if your building qualifies as a Level 5 building, don't worry, Elmhurst Energy Services can determine what level of assessment is required and can carry out the appropriate calculations/assessments based on the complexity of your commercial building.

Dynamic Simulation Modelling (DSM) v Simplified Building Energy Modelling (SBEM)

Like SBEM, DSM can also be used for compliance with Building Regulations/Standards.

Although DSM is used to produce Level 5 EPCs it can also be applied to simpler commercial buildings. DSM offers greater accuracy in comparison to SBEM software, as it takes into account external/environmental forces which can influence occupancy, behavioural and energy use profiles. 

You can see from the list below the high level of detail that DSM covers:

  • Hourly weather data with time step control
  • Building (and PV etc) orientation and inclination modelled at 1-degree increments
  • Ability to model geometry for better results
  • More control over modelling of thermal bridging
  • Inclusion of internal openings
  • Improved modelling of glazing, daylight and solar shading, and also reflection
  • Inter-zone heat transfer and better modelling of thermal mass


We have already seen a trend towards using DSM to ensure compliance with Minimum Energy Efficiency Standards (MEES). This is due to improved accuracy which can often yield a better energy rating when compared to results from SBEM.

Sometimes re-running an assessment on a commercial property with DSM will yield a higher result than SBEM-based calculations, due to the enhanced accuracy, and will, therefore, achieve compliance. 

The London Plan

DSM is an indispensable tool for achieving compliance with complex regulatory legislation such as the London Plan, which requires development to show a 35% improvement in carbon performance compared with Part L of the Building Regulations. 

By completing detailed assessments at the design stage, clients can reduce costs and correctly anticipate required features for their properties, in order to meet compliance. 

Unsure if your project requires DSM? 

Our team are always happy to advise clients on the most appropriate path to compliance for their project. For an informal chat, just get in touch using the contact details below. 

Call us now on

01455 883 259

 and discuss your project with us, there’s no obligation and we’re happy to advise you.

Or why not complete our 'Get a quote' form






Related Links

SBEM Calculations > SBEM Calculations for Conversions and Extensions  >

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