On Thursday, March 3, the unit auxiliary transformers were set on their pads at Deer Creek Station, a combined-cycle power plant under construction in Brookings County, SD.
These are the transformers that step down the electricity going back into the power plant. (After the plant sends electricity out onto the grid, some must come back to power lights, equipment, fans, etc. These transformers take the electricity from 18 kilovolts down to 4.16 kilovolts.)
Joe Volk, Basin Electric’s electrical field engineer on site, got this video.