For the report click here (pdf). It is also located on NEI's Nuclear Statistics webpage.
For January 2007, NEI estimates the average net capacity factor reached 98.8 percent. This figure is 2.1 percentage points higher than the same one month period in 2006. NEI estimates monthly nuclear generation at 73.5 billion kilowatt-hours for January 2007 compared to 71.9 bkWh for the same one month period in 2006.
For 2007, NEI estimates year to date nuclear generation at 73.5 billion kilowatt-hours compared to 71.9.0 bkWh in 2006 (2.2 percent increase).
Here's a summary of U.S. nuclear plant performances last month: