When considering solar generated electricity, almost everyone talks about PV-electrolysis. Hydrogen in Mining: Technology trends Based on the atomic properties of water, 1 kg of hydrogen gas requires about 2.4 gallons of water as feedstock. Fuel cells are more expensive to produce . with the hydrogen protons to produce H. 2. Hydrogen Production Cost - an overview | ScienceDirect Topics How many kWh of electricity is needed to produce 1kg of hydrogen from ... Also, producing hydrogen from electrolysis with electricity at 5 cents/kWh . See answer (1) Best Answer. Typical commercial electrolyzer system efficiencies are 56%-73% and this corresponds to 70.1-53.4 kWh/kg.14 The U.S. consumes somewhere between 140-150 billion gallons of gasoline per year equating to the same . Energy needed to make 1 kg of H2 = 32.9 kWh/kg. To provide a sense of scale, the UK uses about 300 TWh of electricity a year. Hydrogen Data • Hydrogen is colorless and odorless — Detectors are needed • Hydrogen flames are virtually invisible in daylight — Detectors are needed • Hydrogen disperses 3.8 times as fast as natural gas. Solved How much electricity (in kWh) would be needed to | Chegg.com Efficiencies of around 90% are possible under some conditions. 1 kg of H2 can produce around 14-15 kWh of electricity for most modern car-sized fuel cells. Hydrogen is much cheaper than a battery, with a cost of 24¢/kWhr using water electrolysis. The rate at which Hydrogen is produced is directly proportional to the current passing between the electrodes. lists the carbon footprint of electricity production from coal and natural gas as 1.0 kg/kWh and 0.42 kg/kWh, respectively .