"People need to be acutely aware of this whether they are in DIY mode, a boatie (masts hitting wires), a farmer, contractor, kids with kites.
"If people stay clear of our powerlines they won't risk electrocution or death."
Summer electrical safety tips included keeping an eye overhead if working with ladders, aerials, scaffolding, boat masts, kites, fishing rods and farm machinery.
"You should keep yourself and any objects you are handling at least four metres away from overhead power lines," Mr Macmillan said.
Check for the presence of any underground gas, power, fibre optic cables or water services before you dig.
And plant trees well away from power lines, making sure to keep branches trimmed before they get too close.