IES 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.

Case Studies

See how leading design experts and high profile projects have benefited from using the IESVE software.

HLM: 350 Units Residential Development

HLM were tasked with using BIM Archicad software and IESVE to assess the ability of its design to meet performance targets set out in the London Plan for a large residential development.

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No.1 Spinningfields

SWECO used IESVE to conduct detailed thermal modelling and Façade analysis of the iconic No.1 Spinningfields building in Manchester.

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London School of Economics

CBG Consultants performed a ventilation assessment of the main library at LSE and, through the creation of a 3D calibrated model, helped provide support with asset management and maintenance planning.

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What Our Customers Say

We use IESVE to perform more detailed analysis of our proposals and to support our architectural decisions, challenge briefs and integrate a strategic environmental approach into our architecture. It is an essential tool to understand how our architectural proposals can be optimised to maximise comfort and minimise energy consumption.

Dr Craig Robertson
Head of Sustainability, Allford Hall Monaghan Morris

Using the IESVE export function HLM were able to export their design model seamlessly from Graphisoft Archicad into the IESVE to perform the required calculations.

Rafael de Angelis
HLM Architects

Overall the integration between Revit and IESVE made modelling run alot quicker and smoother. It really helped us to work together better, sharing our knowledge on both platforms. Features like the ability to transfer data and the IES solar tools were particularly useful for these projects. The whole process really opened our eyes to the benefits of a BIM enabled workflow.

Ross Thompson
CBG Consultants

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.

VE User of the Year Award

We invite VE users from all around the world to take part in our brand new competition 'VE User of the Year' which looks to find the most innovative use of the VE on a project.

Do you have a suitable project in mind? Submit a description of an IESVE project that you’ve been working on along with 2-5 model images and analysis visualizations and an explanation of why it’s innovative to be in the mix to be crowned 'VE User of the Year'.

Enteries close 18th December 2020.