Electric power service has been unreliable since the Trujillo era, and as much as 75% of the equipment is that old. The country's antiquated power grid causes transmission losses that account for a large share of billed electricity from generators. The privatization of the sector started under a previous administration of Leonel Fernández. The recent investment in a 345 kilovolt "Santo Domingo–Santiago Electrical Highway" with reduced transmission losses, is being heralded as a major capital improvement to the national grid since the mid-1960s.