Break down one cycle
Allocate electrical input power and time to each stage. Avoid counting simultaneous total supply power twice.
ELECTRICAL & DUTY / TOOL 27
Crane Cycle Energy & Operating Cost Calculator
Build a transparent electricity-use estimate from measured or proposed crane operating stages and an entered USD tariff.
Before you start: required inputs
- Obtain average electrical input power and duration for the hoisting, travel and other stages of one representative cycle.
- Record expected daily cycles, annual operating days and the energy tariff in USD/kWh.
Calculation diagram
A PRACTICAL WALKTHROUGH
How to use this calculator
Set annual use
Use representative cycles per operating day and the expected number of operating days.
Review energy and cost
Compare per-cycle, daily and annual energy. The USD result uses only the entered electricity tariff.
100 cycles per day, 250 days per year
THE INPUTS
12 kW for 60 s hoisting, 5 kW for 40 s travel and 0.5 kW for 20 s other time; 100 cycles/day, 250 days/year and USD 0.12/kWh.
THE RESULT
Each cycle uses about 0.2583 kWh. Annual use is about 6,458.33 kWh, costing USD 775 at the entered tariff.
What does the result mean?
01
Stage power must be electrical supply input if you want an electricity-use result.
02
The model scales a representative cycle linearly with the entered operating schedule.
03
Regeneration, demand charges, tax, maintenance and changing tariffs are not added automatically.
Watch for this
Using motor nameplate mechanical output as average electrical input, or treating peak power as the average for the entire stage.
Formula & model conditions +
E_cycle = Σ(P_electrical × t) / 3,600
E_year = E_cycle × cycles/day × days/year
Cost = E × entered USD/kWh
- The entered stage energy totals are added. Avoid counting simultaneous total supply power twice.
- No regeneration, demand charge, power-factor charge, tax, battery loss or maintenance cost is inferred.
- USD values are electricity operating-cost estimates at the entered tariff.
Common questions
How do I include lowering or another stage?
Include its electrical energy consistently within one of the entered stage totals. For more detailed cycles, sum the stage energies separately before comparing the total.
Does the cost include maintenance or demand charges?
No. It is electricity energy multiplied by the entered USD/kWh tariff.