Importing DOE-2 INP

Importing DOE-2 INP (eQuest) files into Tas

You can now import DOE-2 INP files from packages such as eQuest directly into Tas. You can then easily perform daylight analysis such as calculating daylight factors and Climate Based Daylight Modelling (CBDM), and thermal/HVAC simulations without having to re-create the geometry and constructions in Tas.

Original geometry in eQuest
Geometry imported into the Tas 3D modeller

There are three routes you can take to import DOE-2 INP data into Tas:

  • Import into the 3D modeller (Tas3D)
  • Import into the Building Simulator (TBD)
  • Import into both Tas3D and TBD and merge the data

Importing into the 3D Modeller

If you want to import geometry and building element type data into the 3D modeller, you can do so via File  >> Import

You will be able to:

  • Perform daylight calculations (Daylight Factors, CBDM)
  • Change zoning, surface types & building element assignments
  • Export to the Building Simulator (TBD)

Importing into the Building Simulator

The Visualisation in the building simulator allows you to quickly inspect zones and their applied constructions/internal gains

If you want to import geometry directly into the building simulator, you can do so via the import utility:

  • Geometry, constructions & Internal Gains/Activity data will be imported (everything required for an annual simulation)
  • Weather data in Tas TWD or EnergyPlus EPW format can be imported at the same time 

You can therefore simulate the file immediately after importing with no further changes required!

How fast is it?

We created a 200 room model in eQuest and imported it into Tas3D and the Building Simulator. We included weather data, and the import process took 10 seconds.

Can I import the 3D geometry & building data at the same time?

Yes! If you nagivate to the Utilities folder in the Tas Manager, you can import the DOE-2 INP files into the 3D modeller and the Building Simulator at the same time. 

My INP file has inconsistent geometry. Can I still import it?

Yes! The import utility has options to account for thermal bridging and to automatically correct inconsistent floor and inconsistent roof geometry. 

Automatically correcting footprints for badly defined floors saves you time and gives you extra confidence in the validity of the model. 

Want to try it?

If you’re an energy plus or eQuest user and want to try the DOE-2 INP import, you can get a free trial from here which includes full, unrestricted access to the software. 

If you have any questions about the software and its capabilities, get in touch and we’ll be happy to help. 

Responding to coronavirus (COVID-19) together

During these are unprecedented times we wanted to let you know what we are doing to respond to the outbreak.

To protect the health and wellbeing of our employees and their families, all EDSL staff are working remotely. However our support and consultancy services remain fully operational and contactable via email and phone.

As countries all over the world put restrictions in place and encourage people to use social distancing, many of our customers will also be working remotely. We have implemented the following policies to help you during these difficult times.


Remote Working and License Access

During these times of social distancing and remote working users may need additional flexibility. Should you need an alternative method for sharing a license or if you no longer have the same access to your license, please contact and we will be able to provide you with free temporary licenses.


New Roaming Network Licenses

We also have new roaming network licenses in Tas 9.5 which are ideal for remote working and sharing licenses between different locations.


Training and Education

After a long break our in person training will resume in February, however we continue to make our e-training courses freely available for the time being.  Please note that you will need to sign up to enrol on a course.



Our support staff are here to help as normal. Please get in touch via email for the quickest response at Also visit our support page and FAQ sections for alternative assistance.


Student Access

As always, access to Tas is free for Acadmic and Research purposes. Get in touch with support for an academic license.


New Users/Trials

For new trial requests and additional licenses please visit Buy Online for options or contact