Original sentence: In wet years about 1600 — 2000 GWh are lost due to lack of high-voltage line transmission capacity, and some water is run bypassing turbines.To avoid it, new aluminium plant was launched December 15, 2006; completion expected by the end of 2007
Edited sentence: In wet years about 1600 — 2000 GWh are lost due to lack of high-voltage line transmission capacity, and some water bypasses the turbines.To avoid it, a new aluminium plant was launched on December 15, 2006; completion is expected by the end of 2007