Ok, here are fuel cell power plants for striker, derived (but not directly taken) from MegaTraveller stats.
Fuel Cell Power Plant Table
</font><blockquote>code:</font><hr /><pre style="font-size:x-small; font-family: monospace;"> TL Description Output Weight Price Fuel
7-12 Fuel Cell 0.5 1 30,000 5
13-14 Fuel Cell 1 1 30,000 5
15 Fuel Cell 3 1 30,000 5
16 Fuel cell 4.5 1 30,000 5</pre>[/QUOTE]
Output: per m^3 in megawatts. Unlike other power plants, fuel cells may take less than 1 m^3 in volume.
Weight: per m^3 in tons.
Price: per m^3 in Cr.
Fuel: Liters of hydrogen fuel consumed per megawatt of output per hour. If the power plant is designed to be used in an atmosphere lacking oxygen, multiply fuel consumption by 9. Fuel costs and weights as Fusion power plant fuel.
EDIT: The real limitation for fuel cells in low tech levels (TL

is fuel availability; by TL9+, hydrogen becomes extremely easy to manufacture and becomes the "universal fuel", both due to fusion technology. The main advantage over MHD Turbines is in fuel economy and in the fact that the vehicle could be refueled from a ship's fuel tanks; oxygen economy in oxygen-free atmospheres is also probably better.