* Chinese-built plant is first privately built in Western Balkans
* Plant increases regional dependent on dirty coal
* Chinese investment playing growing role in region's power
By Maja Zuvela
STANARI, Bosnia, Sept 20 The Balkan region's first privately-funded power plant came online on Tuesday, increasing the region's dependency on coal-fired power stations even as environmental concerns are driving them to the brink of the extinction elsewhere in Europe.