California seems determined to rush into hydrogen-powered cars, trucks, ships, buses, trains, airplanes, you name it. Never mind that today 95% of the country’s supply of hydrogen is made from fossil fuels. And never mind that every kilowatt of green energy (from wind or solar) that is devoted to making hydrogen would be a kilowatt not available to meeting some other energy need.
What about efficiency? Does anyone in Sacramento care? According to Mechanical Engineering Professor David Cebon of Cambridge University, with the thermal energy loss of manufacturing, transporting and consuming the hydrogen thrown in, the average hydrogen-powered vehicle would operate at 30% efficiency, compared to a battery-operated vehicle that operates at 59% efficiency. Even hybrids do better than 30%. https://www.youtube.com/watch?v=JlOCS95Jvjc





