ScottyUK,
Yes the the generator is 11kv, not stepped up. The powers that be in a multilevelled government organisation have decided to put their money into a reactor on the generator neutral to filter out the 3rd harmonic.
We have the same problem with an 11kv 1.5MW Diesel driven generator, it was originally installed as a standby generator at a large residential complex for essential supplies only.
We installed the required synchronising equipment to generate back into the utility company to reduce peak billing...