IBPSA-Scotland and IBPSA-England are pleased to announce their first joint conference, BSO-uSIM 2026. The conference theme is simulating retrofit at scale, addressing how building simulation is helping to upgrade the energy performance of our communities and urban areas to net zero. BSO-uSIM will be hosted by the University of Strathclyde, Monday 23 and Tuesday 24 November, 2026.

We are very pleased to announce that IES are the principal sponsor for BSO-uSIM2026.

BSO-uSIM2026 - Simulating retrofit at scale. With most governments facing the immense challenge of meeting mid-century net zero targets, the need for modelling and simulation to support retrofitting has never been more apparent. BSO-uSIM brings together building performance simulation experts from academia and industry to explore key challenges, highlight new developments, and share best practice to help realise net zero.

Conference Themes
Fifty full papers have been received from authors from around the globe in the following areas:
  1. AI, BIM, and new digital tools for urban retrofit
  2. Archetypes and stock modelling at the urban scale
  3. Calibration, validation and uncertainty in urban scale models
  4. Data acquisition for urban scale retrofit modelling and simulation
  5. Heat and multi-vector networks
  1. Modelling green energy sources and technologies for retrofit
  2. Modelling for retrofit policy support
  3. Optimisation at the urban scale
  4. People, place and retrofit
  5. Urban retrofit – case studies in modelling and simulation


All successfully reviewed papers, presented at he conference, will be published in the proceedings, which will appear on the IBPSAwebsite.

All authors registering for the conference will be allocated a twelve-minute presentation slot followed with three-minutes for questions. Authors should use the template presentation available under the "Templates" link at the top of the page. Finalised presentations should be submitted via conftool by Friday 13 November.

BSO-uSIM2026 is supported by IBPSA-Scotland, the University of Strathclyde, the University of Edinburgh, Heriot Watt University, Napier University, Newcastle University and the UKRI Centre for Net Zero High Density Buildings (CeNZ-HighDB).

This web site is being regularly updated, so bookmark it for the latest news on BSO-uSIM 2026. We look forward to seeing you at the conference!
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