It is operating at full capacity, and cannot be further expanded.

To be cost effective, the plant must operate at full capacity.

Already, she said, the new water treatment plant will be operating at capacity within two years.

But nuclear plants do not operate at full capacity all year long.

The system is operating at capacity, he said, "and we have to plan for the future."

If you're not operating at capacity, the key word here is margin.

If operated at capacity, the plant could serve a town of 10-15,000 people.

"We are operating at close to 100 percent capacity and have been for some time," he said.

"They can't operate at double capacity for two months of the year."

Union leaders said the company was operating at almost full capacity.