There are hundreds of ethnic groups in Eastern Europe. The largest would have to be the Russians, the Ukrainians, the Romanians, the Greeks, and the Turks. Large immigrant ethnic groups would be such as Chinese, Afghani, Pakistani, and Indian.
Electricity is the essential need for everyday life.
Electricity problems are caused due to failures and errors in the electricity network, these might include man power error at the source, circuit failure, wires burn out etc. apart from these certain natural calamities also can harm the power supply, which include storms which harm the wires transmitting the electricity, heavy rain which causes damage to the electricity poles .
Solar flares and grid failures also lead to electricity failures.