"Generally speaking, where we are first on the scene we call the Fire Service who create a safe space around the scene, and contact the power company to get the power switched off.
"Our instructions to the driver, occupants and anyone in the area are to keep still and stay where they are until things are cleared and safe.
"Our people keep clear until the Fire Service and power companies have done their thing."
Police sergeant Chris Megaw said the woman was uninjured but was taken to Wairarapa Hospital, and referred to specialist services.
A PowerCo spokesman said power was lost to around 75 properties on Ahikouka Rd and Hupenui Rd because of the crash.
Contractors on site replaced the pole and restored power by mid-afternoon.