After a lengthy debate and scrapped motions Wednesday night, the Hall County Board of Commissioners delayed its vote until March 27 on whether to contract with Siemens and Pepco Energy Services for energy-efficiency projects. The controversial projects, running into the tens of millions of dollars, spurred Murrayville resident Doug Aiken to question the wisdom of the proposals. He said he wondered whether the proposed savings would offset the costs and whether the technology implemented now would be out of date in a few years.