The Mexican ferroalloy producer expects to invest US$150-200mn in hydro and wind power projects by 2019, under plans aimed at reducing production costs.
The uptick in copper and iron ore prices helped offset the decline in output as a result of the 43-day strike that affected BHP Billiton's Escondida mine.
But the local industry association sees growth resuming this year.
The country's steelmakers continue to be impacted by the lack of healthy competition and oversupply in the global market, the economy ministry says as it extends a 15% duty.
Shipments of iron ore pellets showed the largest increase in the period, official data shows.