The cost of hydrogen from water electrolysis is estimated, assuming th
at the electricity was produced from solar, hydro-, fossil, or nuclear
power. The costs for hydrogen end-use in the sectors of power generat
ion, heat and transportation are calculated, based on a state-of-the-a
rt technology and a more advanced technology expected to represent the
state by the year 2010. The cost of hydrogen utilization (without ene
rgy taxes) is higher than the current price of fossil fuels (including
taxes). Without restrictions imposed on fossil fuel consumption, hydr
ogen will not gain a significant market share in either of the cases d
iscussed.