Calpine signs PPA with Public Service Company of Oklahoma; TransCanada and Ontario PowerAuthority agree to develop 900-MW gas-fired power plant; Panda selects Siemens to build combined-cycle plant; Progress Energy retires coal plants dating from 1923; Southern Company and Turner acquire 30-MW PV project; PSO begins smart meter pilot rollout; Southern California Edison contracts with Corix to install smart meters; Iberdrola USA hires Burns and McDonnell to review grid infrastructure. Plus contracts and announcements from Itron, eMeter, Echelon, Quanta Services, DNV, Metadigm, Landis+Gyr, and others.