Two words

Why was the power out at Fort Worth City Hall today?

Per the Fort Worth Star-Telegram article, the answer is - Storm water.  (Did it rain??)

HOW much does that cost YOU in the long run?

Spokesman Bill Begley said the outage was caused by storm water flooding a storm drain and tripping circuit breakers. The flooding required that the water be drained before power could be turned back on.

Begley said the storm drainage pump at Texas and Monroe southwest of City Hall malfunctioned, causing the water buildup.