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Calcimator

Fuel Cell Output Calculator

Calculate electrical and heat output from a hydrogen fuel cell system based on hydrogen flow rate, efficiency, and stack configuration.

Inputs

Results

Electrical Output

18.33 kW

≈ 18 microwaves

Heat Output15 kW
Water Produced9 kg/h
Overall Efficiency55%
Annual Output (8000h)146.64 MWh
How to Use This Calculator
  1. Enter Hydrogen Flow Rate (kg/h), Cell Efficiency (%), and Stack Count.
  2. Set Cells per Stack.
  3. Review the Electrical Output (kW) result.
  4. Use Heat Output (kW) and Water Produced (kg/h) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Hydrogen Flow Rate (kg/h)

Hydrogen Flow Rate (kg/h)Electrical Output
1001,833.15 kW
3506,416.03 kW
65011,915.48 kW
90016,498.35 kW

What each input means

Hydrogen Flow Rate (kg/h)
Mass flow rate of hydrogen to the fuel cell in kg per hour.
Cell Efficiency (%)
Electrical conversion efficiency. PEM: 40-60%, SOFC: 50-65%.
Stack Count
Number of fuel cell stacks in the system.
Cells per Stack
Number of individual cells in each stack.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Hydrogen Flow Rate (kg/h) = 1, Cell Efficiency (%) = 55, Stack Count = 1, Cells per Stack = 200 = 4 input(s) provided
  2. Calculate Electrical Output
    Electrical Output
    18.33 = 18.33
  3. Calculate Heat Output
    Heat Output
    15 = 15
  4. Calculate Water Produced
    Water Produced
    9 = 9

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