---
id: engines/ies
about:
  label: IES
  description: >-
    Integrated Environmental Solutions (Glasgow) sells building-performance
    software; its digital twin tools join physics-based simulation with metered
    data for energy, carbon and retrofit decisions, from one building to a
    campus or city.
  tags:
    - buildings
    - energy modelling
    - retrofit
tool:
  form: Commercial modeling platform
  group: Energy and utilities
  homepage: 'https://www.iesve.com/digital-twins'
open:
  source: closed
  data: unknown
  api: unknown
  participation: unknown
domains:
  - energy
provenance:
  origin: agent
  sources:
    - title: Digital Twins for the Built Environment
      url: 'https://www.iesve.com/digital-twins'
  reviewed: '2026-10-18'
  reviewed_by: 'Claude, from the sources listed'
  status: draft
---
IES (Integrated Environmental Solutions Limited, Glasgow) makes building-performance simulation software. Its digital twin offer joins physics-based simulation with measured data from building management systems, utility bills, IoT sensors and meters, in a model that scales from one building to a campus, portfolio or city, to answer questions about energy, carbon, cost and comfort across design, retrofit, commissioning and operation.

Cases named on the page: a live twin of Pollok Country Park in Glasgow mapping where energy is used and generated across the estate; the NTU EcoCampus in Singapore; the Irish Life property portfolio in Dublin, where existing compliance models were revived into net-zero roadmaps; three social housing blocks for Dublin City Council, comparing the whole-life carbon of four retrofit strategies against 2030 and 2050 targets; the Riverside Museum in Glasgow; the University of Glasgow campus; Stirling Council's building portfolio; and a model of the whole city of Bertam in Penang.

Commercial. The tools can be used together or alone: VE for design and retrofit analysis, IES Live for operational energy and carbon, iCD for energy analysis across portfolios, campuses and cities (also as a SketchUp plugin), iSCAN for in-use building data, iVN for district heating, local energy networks and renewables, and Sync for Revit. A free trial and demo are offered; prices are not on the page. IES also sells consultancy on the same work.

Operational; the current VE release is labelled 2026.