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. 

interoperability logos

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

Using IESVE we were able do a whole building simulation and perform detailed analysis of energy, thermal indoor environment and daylight. Based on the model and its outputs we had good dialog with the architect and together developed an energy efficient design. 

Michael Jørgensen

IESVE has the flexibility to import weather data from worldwide weather data providers. Compatibility with CFD module makes it easy and fast to build up a CFD calculation in order to explore the temperatures in the space and on the surfaces. The good visualization of results makes it easier to communicate to the client.

Inese Nagla
ISC Consulting Engineers A/S

In order to provide thermal and visual comfort in NZEB buildings, most of our energy concepts are reviewed and optimized with IESVE. The software helps us to model complex building geometry and complicated HVAC systems. 

Filip Grillet

Out of all the energy modelling software I have experienced, I believe that IESVE has the best user interface. It’s easy to understand, there are a lot of applications that help run all the studies. The user friendliness is one of the strongest sides of IES.

Kiril Simbirskij

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.