What Integrated Environmental Solutions does

Integrated Environmental Solutions (IES), founded in 1994 and headquartered in Glasgow, UK, is a privately held provider of building performance simulation software and associated consulting services, operating as Integrated Environmental Solutions Limited. The company's core platform is the Virtual Environment (IESVE), an integrated suite for whole-building performance simulation built on building physics principles and Apache dynamic simulation, complemented by specialised modules: iCD (SketchUp-based masterplanning), iSCAN (in-use performance analytics), iVN (district energy and renewables feasibility), IES Live (operational decarbonisation), and the ICL Digital Twin Suite (iCD, iCIM, iSCAN) that connects design, visualisation, and operational workflows.

IES targets architects, engineers, and building owners/operators worldwide, with particular strength in green-building certification support (300+ LEED projects) and compliance with UK, European, North American, and Asia-Pacific building regulations. The company serves marquee enterprise customers including Gensler, Arup, AtkinsRéalis, JLL, AECOM, WSP, Mott MacDonald, Buro Happold, UBS, Skanska, and NHS Scotland, among others.

Revenue is generated through three streams: subscription-based software licensing for the VE platform and modules, project-based professional consulting (design analysis, compliance, CFD, M&V, decarbonisation strategy), and training and weather data products. Distribution combines direct enterprise sales, a reseller network, free trials, an academic education programme, and strategic technology partnerships. IES has 18,000+ software users globally, 75,000+ projects per year, and reports having improved 1.5 million+ buildings using its technology over its 30-year history. Leadership comprises CEO Christine Mullin, CTO Craig Wheatley, and COO Ruth Kerrigan.

Name

Integrated Environmental Solutions

Legal name

Integrated Environmental Solutions Limited

Website

https://www.iesve.com/

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Integrated Environmental Solutions (IES), founded 1994 in Glasgow, provides the Virtual Environment (IESVE) building performance simulation platform and specialised modules (iSCAN, iCD, iVN, IES Live), serving architects, engineers, and building owners/operators worldwide with software, consulting, and decarbonisation services.

Ownership category

akta.pro rank

Product category

Building Performance Simulation Software

NAICS

Computer Systems Design Services (541512), Architectural, Engineering, and Related Services (5413)

SIC

Services-Computer Integrated Systems Design (7373), Auto Controls For Regulating Residential & Comml Environments (3822), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Performance Contracting & Energy-as-a-Service (EaaS) for Buildings (BPABAGAN)

Keywords

• Building performance simulation
• Energy modeling software
• Digital twin buildings
• BIM interoperability tools
• Sustainable design software

Headquarters

HQ city

Glasgow

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licensing: Sale and licensing of software products including Virtual Environment (VE), IES Live, iSCAN, iCD, and iVN. The software is offered with different tiers and configurations for various user needs.
2. Consulting Services: Professional consulting services for design analysis, compliance and rating systems, CFD analysis, building operation, and decarbonisation strategies. Services are project-based engagements with clients including architects, engineers, and building owners.
3. Training Services: Training options including online training, on-demand learning, face-to-face training, and VE accreditation programs.
4. Weather Data Products: Sale of simulation weather files and climate data including CIBSE weather files, WeatherShift, Athenium data, and METEONORM files for building performance simulation.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels8 records

Core offering

Integrated Environmental Solutions (IES) develops and licenses building performance simulation and analysis software used by architects, engineers, and building operators to design, assess, and optimize the energy, carbon, and operational performance of buildings. Its flagship platform, the Virtual Environment (VE), together with add-on modules (iCD, iSCAN, iVN), the ICL Digital Twin Suite, and IES Live for operational energy management, is sold alongside consulting, training, and weather data services.

Product overview

Integrated Environmental Solutions (IES) offers a unified platform architecture centered on the Virtual Environment (VE) as the core building performance simulation engine, complemented by the next-generation IES Live for operational energy management. The product portfolio includes specialized modules: iCD for SketchUp-based masterplanning, iSCAN for in-use building data analytics and monitoring, iVN for district energy network analysis, and IES TaP for technical auditing. These tools are available both as standalone products and as integrated components of the ICL (Intelligent Communities Lifecycle) Digital Twin Suite, which connects masterplanning (iCD), cloud-based visualization (iCIM), and operational analytics (iSCAN) into a cohesive workflow. IES also provides professional consulting services including design analysis, compliance and rating systems (LEED, BREEAM, WELL), computational fluid dynamics, building operation optimization, and decarbonisation strategies.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 33.09% energy savings achieved on UBS Southeast Asia headquarters
• +7 more outcomes

Named customers22 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability10 records

Feature8 records

Partnerships

One partnership is on record.

• Pinnacle InfotechcoreStrategic or Co-development Partner · 30 March 2026Pinnacle Infotech signed MoU with IES as part of their strategic expansion into end-to-end design and engineering services. The partnership creates an integrated AI-powered digital ecosystem spanning the design-to-delivery lifecycle for global projects, with IES technology being part of their six global partnerships.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Autodesk: Autodesk is the dominant BIM and AEC software platform whose Revit/Insight/Forma tools increasingly embed energy and carbon analysis. It competes with IES for architects' and engineers' simulation budget, but from a much broader design-platform position.
• Carrier (Hourglass / Abound): Carrier's commercial HVAC and Abound digital building platforms include energy analytics and optimisation for buildings, competing with IES Live and iSCAN on the operational carbon and energy management side.
• Bentley Systems (OpenBuildings): Bentley's OpenBuildings and iTwin platforms target building design, simulation and digital twin workflows for owners and engineers. It overlaps with IES in performance simulation but competes from a broader infrastructure/AEC software suite.

Direct peers

• cove.tool: cove.tool provides cloud-based energy, daylight and carbon analysis plugins for Revit — directly addressing the same architect-led sustainable design workflow as IES VE and iCD, with a strong PLG/early-stage design positioning.
• IES competitor: DesignBuilder: DesignBuilder is a UK-based building performance simulation software built on the same EnergyPlus engine, targeting the same architect/engineer personas as IES VE with overlapping HVAC, energy and daylight features.
• Trimble (Sefaira): Sefaira, now part of Trimble, offers early-stage energy and daylight analysis tightly integrated with SketchUp and Revit. It directly competes with IES Virtual Environment and iCD for architects' upfront sustainability decisions.

Others

• EnergyPlus (DOE / OpenStudio): EnergyPlus is the US DOE whole-building energy simulation engine that IES's Apache engine was originally derived from; it is a free, open-source alternative that competes on price-sensitive and academic projects.
• Arup (Digital Twin services): Arup is a major IES customer and a competing provider of building performance and digital twin consulting; its in-house simulation teams sometimes bundle proprietary tooling alongside IES licences, posing a partner-vs-competitor tension.

Emerging players

• Ladybug Tools (Pollination): Ladybug Tools / Pollination offers open-source and commercial Rhino/Grasshopper-based environmental performance analysis, competing with IES on parametric design workflows for architects and engineers pushing building physics into early design stages.

Regional players

• JLL (Corrigo / Helix): JLL is both a customer and adjacent competitor via its building operations and digital solutions businesses, offering energy and portfolio optimisation services that overlap with IES's portfolio/district-level decarbonisation and digital twin offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/IESVE

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Integrated Environmental Solutions