[pfdietz]

Actually, storage and transportation are positives for hydrogen. It's easier to transport and store hydrogen than it is to transport and store electricity. Hydrogen can be stored underground in caverns very cheaply (this is a demonstrated technology already in use for buffering hydrogen produced from fossil fuels), compared to the cost of equipment for storing electrical energy. Hydrogen is a viable for seasonal storage of renewable energy, unlike batteries.

The negative for hydrogen is poor round trip efficiency of electricity -> hydrogen -> electricity. But for sufficiently long storage times the lower cost of storage capacity vs. batteries overwhelms that, and hydrogen becomes cheaper for grid storage.