Business Insider reports Walmart is suing electric carmaker Tesla over solar roof contracts.
Walmart claims Tesla was negligent in operating and managing 244 solar roof contracts it had with the retailer.
In at least 7 cases Tesla's negligence resulted in fires, resulting in store closings and millions in lost merchandise.
Walmart says Tesla offered no explanation for why these panels were simply combusting.
The suit also states that Tesla had no accurate drawings of the solar panels, and no employees trained in inspecting or fixing them.