The power factor is relatively close to unity for the exciter. The actual excitation current is around 90A DC at 50V or so, though it varies.

Anyhow, the plant itself powers a remote wilderness community that's a good 50km from the nearest power pole. It's maintained largely by volunteers, and is a replacement for diesel power. The landed cost for diesel power right now would be on the order of $2.50/L for the fuel, nevermind the environmental costs. The feedwater for the hydro plant is run of the river type system, taken from a small creek that flows over a large waterfall (meaning no fish concerns).