POWER TO POWER ANALYSIS
BATTERY DATA INPUT  
Nominal battery Ah Ah
Nominal battery DC voltage VDC
Depth of discharge  
Coulombic efficiency of battery  
Efficiency of the charger  
Total number of batteries to be charged per day batteries
     
CHARGER    
Charger input voltage VAC V
Charger input power phases Φ
Charger input current (Amps) A
Charger output maximum power kW in hour kW
Number of chargers chargers
     
FUEL CELL GENERATOR    
kWh of electricity produced per Kg of H2  - energy conversion kW
Market value of H2 per Kg if bought liquid delivered /Kg
     
ELECTROLYZER    
kWh per Kg of H2 produced kWh/Kg
Value of electricity per kWh $/kWh
H2 production per hour  Kg/hr
Hours available per day to make H2 (if solar, hours of sunlight) Hours
H2 storage capacity Kgs
     
CALCULATIONS    
Kwh of battery (nominal battery storage capacity) Kwh
Amount of energy available in battery (depth of discharge) Kwh
Amount of energy required to recharge battery Kwh
Total energy charger needs to recharge battery Kwh
Hours needed to recharge battery to fully charged Hours
Kg of H2 to charge one battery Kg
Value of electricity to produce one Kg of H2 by electrolyzer  per Kg
Cost in H2 per battery charge if H2 supplied by electrolyzer per full charge
Cost in H2 per battery charge if H2 supplied by others (liquid) per full charge
H2 produced per day by electrolyzer Kg
Charger input power requirements in kW (one only) kW
Total energy requirements for all chargers at peak kW
Total Kg of H2 required to produce DC electricity Kg/day
Total cost in H2 (market value) for all batteries charged H2 expense