For the DOE Office of Science, the President requested $4.992 billion compared to the FY 2012 enacted budget of $4.874 billion, an increase of 2.4 percent.

For the DOE Office of Fusion Energy Sciences, the President requested $398.3 million compared to the FY 2012 enacted budget of $401 million, a decrease of 0.7 percent. However, within the total, the U.S. contribution to the international ITER project would increase from $105 million to $150 million, resulting in a decrease in the U.S. domestic base fusion program to $248.3 million from the FY 2012 level of $296 million, a decrease of 16 percent. The primary casualty within the domestic program is a planned termination of the Alcator C-Mod tokamak program at MIT, although most other elements of the domestic program are also slated for reductions.

The budget document notes that DOE’s most recent estimate of the total cost of the U.S. contribution to ITER, made in 2008, was a range between $1.4 billion and $2.2 billion, but says "It is possible that costs may increase beyond (that range)." The budget document says that the cost estimate will be updated in a review this spring.

For the inertial confinement fusion Ignition and High Yield Program within the DOE National Nuclear Security Administration (NNSA), the budget proposes $460 million compared to the FY 2012 enacted budget of $474.8 million, a reduction of 3 percent.

The complete budget documents for DOE are posted at http://www.cfo.doe.gov/crOrg/cf30.htm