The base metals prices on the London Metal Exchange (LME) closed lower mostly on Friday.
The expectation of the Federal Reserve rate hike weighed on metals prices sequentially.
Copperbelt Energy, Zambia's biggest provider of power to mining companies, cut supplies to operators by 30 percent starting midnight Thursday, reports said.
Canada's First Quantum Minerals and Barrick Gold are affected by the cut. First Quantum Minerals said Thursday it has closed the Kalumbila copper processing plant.
The three-month unofficial copper price dropped 23 U.S. dollars, or 0.44 percent, to 5,241 dollars per tonne.
The three-month unofficial aluminium price lost 14 dollars, or 0.85 percent, to 1,632 dollars a tonne.
The three-month unofficial lead price lost 4 dollars, or 0.23 percent, to 1,710 dollars a tonne.
Besides, the three-month unofficial zinc price lost 19 dollars, or 0.97 percent, to 1,936 dollars a tonne.
The three-month unofficial nickel price increased 15 dollars, or 0.14 percent, to 11,075 dollars a tonne.
The three-month unofficial tin price increased 280 dollars, or 1.73 percent, to 16,475 dollars a tonne. Enditem