A Delaware court sided with Tesla CEO Elon Musk in a bitter legal battle over whether he acted against the best interest of other shareholders when he steered the electric car maker into a $2.6 billion acquisition of a solar panel maker founded by two of his cousins.

CEO Elon Musk pushed back again Tuesday against a lawsuit that blames him for engineering Tesla’s 2016 acquisition of a financially precarious company called SolarCity that was marred by conflicts of interest and never generated the profits Musk insisted it would.

In the runup to electric car maker Tesla Inc.’s 2016 acquisition of SolarCity, Elon Musk called the combination a “no brainer,” a one-stop shop for electric cars and the solar panels to recharge them.

Tesla founder Elon Musk took to a witness stand Monday to defend his company’s 2016 acquisition of a troubled company called SolarCity against a shareholder lawsuit that claims he’s to blame for a deal that was rife with conflicts of interest and never delivered the profits he had promised.