About 230 homes in West Auckland are without power after a tree fell on a line in Titirangi about 4pm.
Vector spokeswoman Sandy Hodge said the line is down in Konini Rd and crews are working to isolate the broken line and back-feed the electricity through other lines.
Despite the fact it was just one line, for safety reasons they have to cut power to a larger area.
She didn't know when it would be restored but the Vector website is estimating it to be repaired by 7pm.
