(Bloomberg) -- Lincoln Power LLC, the owner of two Illinois power plants, filed for bankruptcy after its financial strain was exacerbated by nearly $39 million in penalties levied by the biggest US electric-grid operator. Most Read from BloombergParents Are Paying Consultants $750,000 to Get Kids Into Ivy League SchoolsTrump Faces Fingerprints, Mug Shot After Dramatic IndictmentSchwab Hit by Worst Month Since 1987 Amid Cash Sorting WoesChina Hits Micron With Review of Chips, Citing Security Risk