[Wonder Warthog]

"It is a fuel cell. Water is the final product."

Only if the fuel source is pure hydrogen. Since they are using various hydrocarbons (or other carbon-containing fuels, there WILL also be CO2 emissions). The sole advantage of SOFC's of this sort is that they are way more efficient than conventional steam and/or gas turbine generating plants.

[TXnMA]

"The sole advantage of SOFC's of this sort is that they are way more efficient than conventional steam and/or gas turbine generating plants. "

That would, indeed, appear to be the case:

Steam power plant:

Fuel Energy
converted to
Steam Energy
converted to
Mechanical Energy
converted to
Elecrical Energy
(With losses at each conversion...)

~~~~~~~~~~~~~

Gas Turbine power plant:

Fuel Energy
converted to
Mechanical Energy
converted to
Elecrical Energy
(With losses at each conversion...)

~~~~~~~~~~~~~

Fuel Cell power plant:

Fuel Energy
converted to
Elecrical Energy
(With loss at a single conversion...)