Didn't see mention of the voltage/current specs. 1400A at 1MV maybe? HVDC is morbidly fascinating, and the gear to transform has that awesome 1950s sci-fi look.
I actually drove all the way out to the Britned HVDC transformer station near Rotterdam earlier this year. Absolutely huge bunch of gear, mostly enclosed though and no public tours :(
So while each line is only 525kV relative to the environment, it's 1.05MV between the two lines. A megavolt seems to have been practical HVDC tech for a while now, I was just idly wondering if they had taken things up a notch in this latest project.