Virtual Environment

Improve the performance of any building

Integrated Software for Whole-Building Performance Simulation

Used by building design experts around the globe, the Virtual Environment (VE) is a suite of integrated analysis tools for the design and optimization of buildings. The IESVE platform leverages the world-leading simulation engine (APACHE) to allow cross-team collaboration between architects, engineers and contractors, from Schematic Design to Post-Occupancy.



Energy Modelling & Compliance

Tools for fast, accurate, sub-hourly, thermal building simulation of any size or complexity.

Building & Systems Design

Quick and easy loads calculations and equipment sizing from the earliest stages of design.

Modelling & BIM Interoperability

Interoperate with BIM platforms for two-way information exchange and quick digital design.

BIM Interoperability

IES offers unrivalled interoperability with other CAD design and analysis tools. The smooth and robust two-way information exchange between VE and BIM platforms speeds up the design process and facilitates digital design. 


With origins reaching back over 25 years, the technology originally dubbed ‘APplication for Air-Conditioning and Heating Engineers‘ has evolved into a user-interface, rules processor and the best whole-building energy simulation engine in the world.


Some examples of using the VE

Explore how leading innovators like you are harnessing the power of the VE with our interconnected ICL platform

VE for Students & Educators

IES offer a range of discounted software and training packages to educational institutions that use our software in their teaching. Students can also buy a student version of the VE for just $70!

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ICL Tools

Connect the VE with other ICL tools

Leverage our integrated Digital Twin solution for decarbonised, healthy and resilient built environments.

Deliver Net-Zero at any level

From a single building to an entire city, link all aspects of your building’s lifecycle from design and construction through to operation.

Save time and money

Centralise all sustainability data in one platform and gain intelligent insights that save both operational energy and capital costs.

Enhance your productivity

Connect everyone from owners and occupants, to designers and planners, in a single collaborative environment.


Create profiles using actual operational data for model calibration and Measurement & Verification.


Undertake sustainable masterplanning to create 20 minute, resource efficient neighbourhoods.


Take a community approach and include networked renewable, EV, and heating, cooling, power solutions in your design.

Collaboration Cloud

Visualise and communicate with operational dashboards, portfolio management and community engagement tools.

Some useful resources for VE

Introduction to IESVE

New to the VE and need help learning the basics? Our free on-demand course introduces IESVE and some of its key features.

Technical Information

Take a technical tour and get FAQ answers in the Knowledge Base. 

Upskill with IES

Discover our range of free on-demand courses designed to enhance your knowledge and application of our software

Request a Quote

Tell us what you want to achieve and we'll build you a bespoke quotation.

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