Technical Information


WRATE V4 will run on a Windows 7, Windows 10 or Windows XP platform and is designed and licenced on an annual single user basis. The model comes with over 150 default waste management processes (ranging from complex combined heat and power facilities, landfills, different vehicles, and many recycling options).

The model options available are: Demonstration, Version 4 (V4) and Academic. The Table sets out the key differences between the versions of the software. When initially installed the software will be in Demonstration mode – which allows you to evaluate the software and to ensure that it will work on your system prior to purchase of a licence. Note: the Academic version is a separate product and is available to educational institutions only upon request; the academic version does not include any of the V4 updates.

The following table sets out the functionality of the different licences available for WRATE:

FUNCTIONALITY DEMONSTRATION V4 Academic
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Printing graph
Foreground process database use
Unlimited licence duration  X 1  X 1
Unrestricted process type usage
Unrestricted energy database access
Unrestricted waste composition database access X
Scenario comparison
Importing project(s) X  X 3
User manual access (PDF)
Full life cycle inventory (980 emissions)
Emissions available to all environment compartments X
Unrestricted total waste input X
Unrestricted number of processes in a scenario X
Duplicating processes X
Exporting/importing user defined processes X  X 3
Exporting project X
Backup functionality X
Saving a project X
Creating a user defined process X
Printing report X
Helpline (for software installation) and updates X X
Training  (provided for a fee) X
Access to 6 ecoinvent background database X
Change impact assessment methods X

1   Licences are available for 12 months periods
2   For use by academic institutions (please note this version is only available on request and has not been updated).
3   Project and Process import only from another Academic Version and not from the commercial version.

WRATE uses a number of databases to support the modelling of waste management systems
and these are shown diagrammatically in the following figure.

database image

Editable databases include energy mix (apart from the Academic version) , waste composition and foreground processes (waste management processes embedded in the model). The project database is entirely user defined and WRATE does not come with any default projects. The background inventories (the life cycle inventories for the construction materials and consumables used when developing and applying process) is based on ecoinvent data™ v 2.1. The Life Cycle Impact Assessment methodologies database is not an editable database but contains the impact assessment models available with this version. WRATE V4 comes with six impact assessment models based on global warming, acidification, aquatic ecotox, human toxicity, resource depletion and eutrophication.

Development of Models


Models are developed within WRATE by creating a waste flow diagram, having previously defined a waste composition (or multiple compositions), an appropriate energy mix, and collated data relating to the waste catchment area – such as the number of households serviced and the location of key waste infrastructure so that transport distances can be estimated.  Waste flow maps do not need to be based on geographic location, but travel distances need to be reflected within the transport processes used. 

This is a typical simple waste flow map.

Flow map graphic

Results Display

Results can be displayed in a variety of different formats including bar graphs and spider diagrams as well as a complete numerical listing of over 900 environmental burdens. 

Flow map graphic