Azerbaijan, Baku, 29 February / Trend / Most of the high-voltage mains and substations in Azerbaijan have been operating for past 30-40 years, the Deputy Chief Engineer in the Azerenerji JSC, Rafig Mammadov, said.
At present, Azerenerji is renewing the electric systems, which will improve the stability and quality of the power supplied, as well as expand the energy exchange opportunities with neighbouring countries, Mammadov said.
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