About Us

At Simstream, we provide end-to-end building physics services tailored to every stage of your project. With over a decade of experience in sustainable building design and simulation, we combine practical expertise with academic rigor to deliver solutions that are both innovative and effective.

Since 2008, we’ve partnered with leading universities, forward-thinking councils, and world-class engineering firms to tackle complex design challenges in the built environment. Our work spans energy efficiency, thermal comfort, daylighting, ventilation, and environmental performance, ensuring that every project not only meets but exceeds sustainability goals.

We are committed to translating advanced building physics insights into actionable strategies, helping our clients create spaces that are comfortable, energy-efficient, and future-ready. Whether you’re in the conceptual design phase or navigating detailed construction planning, Simstream is your trusted partner for building smarter, greener, and more resilient structures.

 

Competencies/Toolset:

Rhino 3D & Grasshopper for all computational design needs
IES Virtual Environment analysis suite for industry-standard energy simulation
OneClick LCA for product and building-level life-cycle assessment
Revit & AutoCAD
Honeybee & Ladybug Tools (including Energyplus, Radiance)
Experience with other software including PVSyst, DIVA, Blender, Sketchup, ANSYS CFX, OpenFOAM
Python, C#, VBA, gbXML
Tom Blight, PHD

Meet Tom Blight, PhD – Founder & Lead Energy Consultant

Tom Blight is an energy consultant passionate about comfort, wellbeing, and sustainability in buildings. His expertise in occupant behaviour and BIM workflows blends research insights with practical experience. After completing his PhD at the University of Bath in 2015, he worked at BuroHappold Engineering on diverse international projects. In 2017, he founded Simstream BV in the Netherlands, which now delivers innovative, sustainable building physics solutions worldwide, including high-profile projects like the City of Life Sciences in Wageningen.

Clients & Partners Include:
  • Buro Happold Engineering
  • The Circle Line
  • Sustainable Construction Services
  • 3ADAPT
  • Verco
  • Zero Emission Buildings
  • DesignCO2
  • Joule

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