Virtual Environment

Improve the performance of any building

Leading integrated suite for accurate whole building performance simulation

Used by sustainable design experts around the globe IESVE is a fast, accurate, sub-hourly, thermal simulation suite that can model new and existing buildings of any size and complexity. For architects, engineers and contractors, the platform allows cross-team collaboration from concept design to operation. Its power embeds energy and performance assessment across the entire building lifecycle. Integrate Performance Analysis into the heart of the design process.

Energy Modelling & Compliance

Integrated suite of applications for accurate, sub hourly, thermal simulation for buildings of any size and complexity.

Building & Systems Design

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

Modelling & BIM Interoperability

Interoperability with BIM platforms enabling two-way information exchange to speed up the design process and facilitate digital design.


Browse through the capabilities of IESVE and choose from multiple integrated Applications and Navigators designed to meet any of your project requirements. Mix and match to create your perfect analysis suite. When you've made your selection, just send us your request and we'll build you a customized quote.


Integrating Performance Analysis into the heart of the design process, IES offers an unrivalled interoperability with other CAD design and analysis tools. The smooth and robust two-way information exchange between IESVE and BIM platforms speeds up the design process and facilitates digital design. 

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Digital Design & Operation

Building Performance needs to be at the core of a Digital Design and Operation approach. The IESVE software provides a single platform that can model, predict and verify performance continuously throughout a buildings life cycle.

What Our Customers Say

The IESVE graphical user interface is more adaptable than any other software we have previously used. It takes less time to run analysis and makes it considerably easier to input complex building geometry accurately.

Brenton Hill

The biggest challenge was to model the hollowcore because a lot of design elements needed to be optimised and integrated. We use IESVE for most of our project modelling and on all our complicated schemes - and this was certainly complicated. I doubt you’d have been able to model this system in any other software solution.

Ljubomir Erakovic

The unique weather data available within the IESVE proved to be invaluable for this project. It enabled us to much more accurately analyse the energy efficiency of the building and evaluate renewable energy options in terms of solar and climate impact.

Stuart Gibson
Lead Engineer

Manufacturing Tools

We've worked with these high-profile manufacturers to incorporate their products into our software so you can now apply them directly to your model and evaluate the impact they will have on the performance of your building.