Complex sentence: Finally, after five to six years of being shuttered, the Unit Two reactor was restarted on November 5,1995, which resulted in radical changes in the Armenian power supply schedule, which could then provide power day and night.
Split into simpler sentences: Finally, after five to six years of being shut down, the Unit Two reactor was restarted on November 5,1995. This resulted in radical changes in the Armenian power supply schedule, which could then provide power day and night.