Energy Modelling Software
Vulcan helps teams create, check and analyse detailed Home Energy Model inputs faster for design decisions and building regulations compliance.
Product capabilities
HEM has many more inputs than SAP, and its outputs can change design decisions rather than simply confirm compliance. Vulcan makes HEM inputs faster to create, more auditable and easier to turn into design insights.
Model faster
Import or trace geometry, reuse defaults and bulk-edit repeated inputs to cut modelling time.
Trace plans quickly, or start from CAD geometry.
Generate junctions from geometry, then inspect and edit them.
Update repeated values across elements, models and project batches.
Reuse U-values and model assumptions across similar dwellings.
Check earlier
Spot geometry, schema and SAP differences while they are still quick to fix.
Use the 3D view to spot base heights, window dimensions and shading issues.
Catch geometry and schema issues before late rework.
Compare SAP PDFs or XML to the HEM model to add or vary elements.
Attach evidence, request review and resolve comments before submission.
Explain better
Run unlimited local simulations, compare scenarios and inspect the half-hourly detail behind compliance results.
Set up fabric, system or operating changes. Run unlimited local simulations.
Review half-hourly outputs to better understand compliance results.
Count unmet demand hours or define custom checks with SUMIFS and COUNTIFS.
Test project-specific energy prices in cost metrics.
Connect tools
Keep HEM model data usable across local files, spreadsheets, APIs and AI models.
Models, SAP data and outputs live in a normal folder on your machine.
Move geometry through a documented CSV format you can open in Excel.
Connect lodgements, dwellings and evidence to project systems.
Use AI models to set up scenarios, run simulations and summarise results faster.
Leading organisations are using Vulcan
Stay updated with the latest energy modelling insights, tutorials, and industry analysis.
What Vulcan and Savills Earth's HEM vs SAP analysis suggests about using the transition period to reduce compliance, workflow and energy-use evidence risk.
The Future Homes Standard and Home Energy Model consultation responses make clear why firms should prepare for HEM now, not later.
HEM will reward faster workflows, not familiar ones. Geometry-first model creation is a better way to handle HEM's extra detail than recreating SAP-era forms.
