Better Building Performance Begins Here

With software solutions rooted firmly in building physics, we empower designers, engineers, building owners and operators to deliver more efficient, comfortable and sustainable buildings through design, retrofit and operation.

Virtual Environment (VE)

IES Live

30 Years+

Building Analysis Experience

1.5M+

Buildings Improved Using IES Technology

75,000+

Projects per Year Using IES Technology

18,000+

Software Users

Our Solutions

Virtual Environment

Leading integrated suite for accurate whole building performance simulation

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Key Capabilities:

All-in-One Platform for All Skill Levels
Trusted by Architects & Engineers
Global Compliance, Local Expertise
Fast, Visual HVAC & Energy Modelling
BIM & CAD Interoperability

IES Live

Next generation building decarbonisation and operational energy management

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Key Capabilities:

Powered by Physics, Managed by Experts
Investment Ready Plans
Track Net-Zero Project Impacts
Cut Energy Costs, Reduce Complaints
Benchmark Real vs. Optimal Performance

Consulting Services

Proven advanced simulation expertise for high performance design, retrofit, and operation

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Key Capabilities:

Global Leaders in Sustainable Design
World’s Largest Building Analytics Team
Trusted for Robust, Proven Results
Expert IESVE Modelling for Net-Zero Goals
Driving Innovation Across the Whole Lifecycle

All Products

All Services

Trusted by Leading Organisations

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Impact You Can Measure

Our customers are achieving significant, measurable improvements with IES technology. Explore real projects where energy costs drop, carbon emissions shrink, and performance improves.

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$434k

Energy cost savings identified

HGA
The Glick Center, Metrohealth

100+ Tonnes

Yearly carbon emissions savings

Arup
Mynydd Isa Campus

56.5%

Reduction in source energy use

CBRE
R&D Facility

7,000 MWh

Estimated annual electricity saving

AtkinsRéalis
Hong Kong Government

IES for High-Performance Data Centres

Accelerate hyperscale data centre delivery and meet AI-driven demand with IES’s end‑to‑end data centre services. Our consultants can help you model cooling, power, and control strategies under real climate conditions to improve resilience, reduce energy, carbon and water use, and achieve industry-leading PUE targets of 1.2 or lower.

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Fundamentals of Building Performance Modeling Handbook

Our latest handbook - Fundamentals of Building Performance Modeling (Version 2) - is now here! Expanded with clearer guidance, deeper insight, and new topics to support anyone looking to master the core principles of building physics and performance simulation.

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