The 3000w you refer to what? is presumably that everything is so bright.
Its cause the newsroom is so small, its ceiling is only 14-15 feet high, hence the lighting is a bit intense to say the least, being so close to the subjects.
Its upstairs in the Television Centre, hence the ceiling height is the same as the office space around it - which is silly. Should use one of the studios downstairs.
To relate this all to architecture, the TV Centre is fantastic, a Miesian pile of aggregate columns and glass - as is the Admin Building and the Radio Centre - award winning at that.