Fundamentals
Load Factor Calculator
Calculate an interval energy-to-peak ratio from consistent measurements.
02 / Result
Interval load factor
Average demand = interval energy / interval duration · Load factor = average demand / interval peak demand
Calculated results will appear here.
Method and boundaries
Average demand = interval energy / duration. Load factor = average demand / peak demand from that same interval.
This is not transformer rated-capacity utilization, billing demand, demand factor, diversity factor, utilization factor or equipment efficiency.
FAQ
What does this calculator compute?
Average demand is interval energy divided by interval duration. Load factor is that average demand divided by the peak demand of the same interval.
What is it not?
It is not transformer rated-capacity utilization, billing demand, demand factor, diversity factor, utilization factor, or equipment efficiency.
What has to match?
Energy, duration, and peak demand must describe one interval. Do not mix a monthly energy total with a peak from a different window.
Source records
Load factor (SRC-041)
Institution: U.S. Energy Information Administration
Section: Glossary definition of average load divided by peak load over the same interval
URL on the calculation record: https://www.eia.gov/tools/glossary/index.php?id=Load_factor
Verification date: 2026-10-12
Status: review-required