PGI 217.174 Multiyear contracts for electricity from renewable energy sources.

The business case analysis template and guidance for the head of the contracting activity determination to enter into a contract for a period in excess of 5 years is available here: http://www.acq.osd.mil/dpap/dars/dfars/changenotice/2010/20100621/2008-D006%20PGI%20Template.doc.