energy production: hydroelectric power plant

activity alternative architecture assembly belt big buildings clean company complex construction conveyor dark device economy electric electricity energy engine factory fuel furnaces generate generation generator heat heavy hidraulic huge hydro hydroelectric hydropower indoors industrial industry insurance laborer labourer lake lighting lights line lit machine machinery man manufactory manufacture model night nighttime nonuclear oil operator overhead pipe plan plant power producing production project river running smoke smokestacks smoky steel structure supply technical technique towers union view water waterpower work worker workman