Lower power bills are coming for Napier, Hasting, Taupō and Rotorua.
Unison, which owns the lines that deliver electricity, has lowered its charges to electricity retailers from April 1.
Unison General Manager Business Assurance Nathan Strong said a residential customer in Hawke's Bay would the network part of their bill drop by about 13 per cent.
Unison's network charge made up about half a typical residential electricity bill, so a Hawke's Bay customer that used 8,000 kWh with controlled hot water heating would see a reduction of $135 per year, or abound $11 per month.
A customer in Taupō or Rotorua that used 8,000 kWh with controlled hot water heating would see a reduction of $124 per year, or about $10 per month.