Complex sentence: Texas, with 14,098 MW of capacity, had the most installed wind power capacity of any U.S. state at the end of 2014, and also had more under construction than any other state currently has installed.
Split into simpler sentences: Texas, with 14,098 MW of capacity, had the most installed wind power capacity of any U.S. state at the end of 2014. Texas also had more under construction than any other state currently has installed.