Each point is an ICP (electricity connection) that Orion's published list shows as export-restricted. ICP addresses come from the Electricity Authority's registry, and were located by matching them to LINZ address data. Orion's list has about 53,000 ICPs; the matched ones are shown. Most of the rest have flat or unit numbers that don't line up between the two address datasets. Several ICPs can share one address, for example flats.
Sources: Orion's published list of export-restricted ICPs; Electricity Authority ICP registry; address locations © Toitū Te Whenua LINZ, licensed CC BY 4.0; map © OpenStreetMap contributors.