Center on Sustainable Communities will offer a free statewide Energy Efficiency Rehab Training at the John and Mary Pappajohn Education Center in downtown Des Moines on Oct. 12-13 and Nov. 9-10. The two-part curriculum is the state's most comprehensive renovation training focusing on sustainable building techniques and energy efficiency, the Des Moines-based nonprofit said in a release. Attendees who attain a certificate of completion will be placed on a preferred vendor list promoted across Iowa. For additional information and to register, visit www.icosc.com or call 515-277-6222.