A final rule issued by the Department of Defense amends the Defense Federal Acquisition Regulation Supplement to implement Section 846 of the National Defense Authorization Act for Fiscal Year 2011 (PL 111-383), which requires the use of photovoltaic devices in performance of any covered contract to comply with the Buy American statute, with exceptions. Photovoltaic devices produce direct current electricity from sunlight, which can be used to provide power to things such as DoD-owned facilities or private housing. The rule adds new DFARS 225.7017, Utilization of domestic photovoltaic devices, as well as an associated clause ( DFARS 252.225-7017) and solicitation provision ( DFARS 252.225-7018). Under the new prescription provision ( DFARS 225.7017-4), the clause must be used in solicitations for a contract that is expected to exceed the simplified acquisition threshold and may be a covered contract.