** Shares of solar tracker maker ARRAY Technologies ARRY.O rise 1.1% to $7.51 premarket
** Company to acquire APA Solar for around $179 million, including debt to expand its U.S. manufacturing capabilities
** "Demand for engineered foundations growing rapidly and APA's capability to perform in the toughest soil conditions is more efficitent than competitor's offerings," ARRY CEO Kevin Hostetler says
** Transaction is expected to close in Q3
** As of last close, ARRY shares up 23% YTD