New Service Idea By grlangworth | 12 January 2011 - 00:08 |12 January 2011 Power Grid Network Projects We’ve posted a new PGN service concept on the PGN App Services Page — Smart Grid Appliances and Time-of-Use Tariffs — How They Can Help Each Other Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Bookmark the permalink.