Siemens and the US transmission network operator PJM Interconnection produces of one of the world's most modern grid management systems, by means of which the largest power transmission network in North America is being controlled. Siemens commissioned the grid management system jointly with PJM in late 2011. It is based on a Shared Architecture integration platform developed by Siemens and PJM in which the Siemens Spectrum Power energy management system was integrated into control of the...