The Department of Energy serves to advance the national, economic, and energy security of the United States, promote scientific and technological innovation in support of that mission and ensure the environmental cleanup of the national nuclear weapons complex. The Department’s $67.7 billion in budgetary resources are used to promote energy security, nuclear security, scientific discovery and innovation, and environmental responsibility. Like other agencies, it is committed to pursuing this important mission while managing its finances effectively, which includes ensuring its payments are accurate, using only property it needs, and accounting for its finances properly.