IDAHO FALLS, Idaho -

The contractor at Idaho National Laboratory has improved its performance rating from the Department of Energy.

The Post Register reports the DOE determined Battelle Energy Alliance earned 91.4 percent of its total available fee during fiscal year 2013. That's a substantial improvement from the previous fiscal year, when Battelle earned about 86 percent of the total contracting fee -- the lowest rating the company had received since 2005.

The contract between Battelle and the federal government allows the payout to adjust based on performance. The latest performance rating means the company will be paid about $17.1 million for work completed in fiscal year 2013, compared to the maximum available payout of about $18.5 million.