Building load calculations done right
Model the actual loads in your building — lighting, HVAC, motors, receptacles — and let ekx calculate the total connected load, apply demand factors, and size the service. No spreadsheet gymnastics.
What you get
Lighting, receptacles, motors, HVAC, cooking equipment, and custom loads — all modeled in one place.
Standard demand factors applied per NEC 220 based on load type and building occupancy.
Service entrance sized automatically from the calculated demand — main breaker, conductors, and grounding.
Loads distributed to panels with capacity tracking on every panel.
Available fault current calculated at every panel and distribution point.
Load calculation, sizing, fault current, and voltage drop — all from the same model.
Building electrical design in one tool
Typically you'd do the load calculation in a spreadsheet, sizing in NEC tables, fault current in separate software, and the one-line in CAD. ekx puts it all in one model.
- Model every load type in the building on the one-line diagram
- Demand factors apply automatically per NEC 220
- Service, distribution, and branch circuit sizing all calculated
- Fault current and voltage drop included — no separate analysis
Start free. Upgrade when you need more.
Free tier includes 1 project with up to 2 buses. Paid plans start at $27/month for consultants and $149/month for unlimited access.
View All PlansFrequently asked questions
Commercial, industrial, institutional, and multi-family residential buildings. ekx handles the load types and demand factors common to all building types.
Standard NEC 220 calculation methods are supported. Optional calculation methods per NEC 220.82-220.87 can be evaluated.
Yes. Loads are connected to specific panels, and each panel shows connected load, demand load, and available capacity.
Load summaries are part of the analysis results and included in exported study reports.
Building load calculations from the one-line.
Every load type, demand factors, service sizing — one model.
Start Free