About IES
IES is recognised as a world leader in 3D performance analysis software that is used to design tens of thousands of energy efficient buildings across the globe. Our technology is supported by integrated consulting services and today its capabilities are expanding from use on individual buildings to helping create sustainable cities.
Uncovering hidden cost, energy and carbon savings, our technology and consulting services support smarter energy-efficient choices across new building investments, building operation and refurbishment of existing buildings. We deliver unique tools and technology to assist regulatory and rating agencies, building owners, facilities managers, sustainability and energy managers, architects and engineers in their objectives.
We invest over ¼ of our turnover in R&D to ensure our analytical tools and industry knowledge stays the most pioneering and innovative.
Featured articles and news
Villa Wolf in Gubin, history and reconstruction. Book review.
Construction contract awards down £1bn
Decline over the past two months compared to the same period last year, follows the positive start to the year.
Editor's broadbrush view on forms of electrical heating in context.
The pace of heating change; BSRIA market intelligence
Electric Dreams, Boiler Realities.
New President of ECA announced
Ruth Devine MBE becomes the 112th President of the Electrical Contractors Association.
New CIAT Professional Standards Competency Framework
Supercedes the 2019 Professional Standards Framework from 1 May 2025.
Difficult Sites: Architecture Against the Odds
Free exhibition at the RIBA Architecture Gallery until 31 May.
PPN 021: Payment Spot Checks in Public Sub-Contracts
Published following consultation and influence from ECA.
Designing Buildings reaches 20,000 articles
We take a look back at some of the stranger contributions.
Lessons learned from other industries.
The Buildings of the Malting Industry. Book review.
Conserving places with climate resilience in mind.
Combating burnout.
The 5 elements of seiri, seiton, seiso, seiketsu and shitsuke.
Shading for housing, a design guide
A look back at embedding a new culture of shading.
The Architectural Technology Awards
The AT Awards 2025 are open for entries!
ECA Blueprint for Electrification
The 'mosaic of interconnected challenges' and how to deliver the UK’s Transition to Clean Power.