Sometimes the price of natural gas is even negative, there is too much of it. "Natural gas at Texas’s Waha hub is trading at negative $7.05 per million British

Sometimes the price of natural gas is even negative, there is too much of it. "Natural gas at Texas’s Waha hub is trading at negative $7.05 per million British Thermal Units, hitting a record low of negative $9.52 on April 15." https://www.barrons.com/articles/natural-gas-texas-negative-prices-9ecc5e77 https://www.barrons.com/articles/natural-gas-texas-negative-... There are different kinds of water electrolysis equipment, with different capital expenditure and operating expenses. "Alkaline electrolyzers are cheaper in terms of investment (they generally use nickel catalysts), but least efficient. PEM electrolyzers are more expensive (they generally use expensive platinum-group metal catalysts) but are more efficient and can operate at higher current densities, and can, therefore, be possibly cheaper if the hydrogen production is large enough." https://en.wikipedia.org/wiki/Electrolysis_of_water#Efficiency https://en.wikipedia.org/wiki/Electrolysis_of_water#Efficien... Anything using platinum-group metals will be very expensive. Therefor catalytic converters in cars use very little platinum-group metals. "The amount of palladium in a converter can vary, but it is typically around 2-7 grams." https://vehiclefreak.com/how-much-palladium-is-in-a-catalytic-converter/ https://vehiclefreak.com/how-much-palladium-is-in-a-catalyti...