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No, kw (power) is a fundamentally different unit from kwh (energy).
Energy is conserved, so that’s how we use it and pay for it, but power capacity is very important for infrastructure. A battery that can hold 1 GWh worth of energy, but can only output it at a rate of 10 MW, might have a ton of limitations to its usefulness.
Blue hydrogen is made by stripping the hydrogen from fossil fuel hydrocarbons (chains of hydrogen and carbon, hence the name), and sequestering the carbon. It produces a fuel that contains enough chemical energy to be burned as fuel, but without the carbon atoms that would turn into greenhouse gases.
Most hydrogen currently produced though, is gray hydrogen (made from natural gas, but without sequestering the carbon, so that CO2 is emitted into the atmosphere).