Complex sentence: When the 160 megawatt solar power plant located just to the west of the lake was built, they were required to pump groundwater to the lake, however, this did not occur as the company that owned the plant when bankrupt.
Split into simpler sentences: When the 160 megawatt solar power plant located just to the west of the lake was built, there was a project requirement to pump groundwater to the lake. However, this did not occur because the company that owned the plant when bankrupt.