BBC News - TV by candlelight as power goes out at Dutch TV station

A sports programme on Dutch public television ended up being broadcast by candlelight on Sunday after a power cut at the TV station.

Tests being carried out by the electricity supply company took all public broadcasting channels in the Netherlands off-air for more than half an hour when back-up batteries ran out.

Verity Wilde reports.
If the power was out, how were they broadcasting anything?

Is this not more a story of "TV Presenters Panic, Carry on as Normal Despite Lack of Audience"