Vector has installed Asia Pacific's first grid-scale Tesla powerpack: "Located at Vector’s Glen Innes substation, the Powerpack has a storage capacity of 1MW/2.3MWh, which is the equivalent to powering 450 homes for 2.3 hours."
More of this......please.
http://www.scoop.co.nz/stories/AK1610/S00561/asia-pacifics-first-grid-level-tesla-powerpack-opened.htm