While it can be extracted from water, the cheapest source of hydrogen is natural gas, an non-renewable hydrocarbon. Another disadvantage is that there is no distribution system or standardized method of storage for hydrogen, which is crucial since hydrogen fuel is a gas that must be kept under high pressure.[1]
Customer acceptance is another major issue for hydrogen use, in that consumers of traditional fuel may be resistant to the change and uncertainty associated with transitioning to hydrogen as a major source of the energy they rely upon on a daily basis.
The overall challenge to hydrogen production is cost reduction. In order for hydrogen to be cost-competitive and to succeed in the commercial marketplace, it must be comparable to conventional fuels and technologies on a per-mile basis.[2] Building an infrastructure to deliver hydrogen comparable to a gas station on every corner would cost billions and require the unprecedented cooperation of automakers, energy companies, and the government