“Back when Trump started running for president and he stated that he wanted to build a wall, I started to tell people that if he becomes president and there’s going to be a wall I’d like to design a solar wall,” Thomas Gleason, managing partner of Gleason Partners, LLC told PopSci. Gleason says that he designed the wall to show that solar can pay for itself. In his team’s design, the base of the wall is precast concrete that goes under the ground to give the structure stability. The next eight feet is made of a tight mesh fencing that can’t be climbed or hooked into. Above that, the wall’s solar features kick in: from eight feet up to 24 feet, Gleason says, the structure will be made of a "solar curtain wall".