AUSTIN — Will the lights stay on in 2012? Texas electricity experts cannot say for certain.

The state’s electric grid operators are coming off of a tumultuous year, one they are not eager to repeat. In February, a deep freeze knocked numerous power plants out of commission as equipment broke, causing rolling blackouts across the state. Then, the hottest summer on record spurred repeated conservation warnings, as grid managers worked — successfully — to avoid more blackouts.

Original source: Texas Tribune