Trump announces hopes for ‘solar wall’ along US southern border

President Trump on Wednesday made his first public pitch to install solar panels on his border wall with Mexico.

It was the first time that the president mentioned his plan publicly. Earlier this month, two congressional Republicans told The Wall Street Journal about the plan after a private meeting with Trump.

“Think of it,” Trump told the audience Cedar Rapids, Iowa. “The higher it goes, the more valuable it is. Pretty good imagination, right?”

The president joked, “This way, Mexico will have to pay much less money, and that’s good. A solar wall. Makes sense.”

In March, two experts wrote an opinion article in The Journal about the potential benefits of a solar wall.

Vasilis Fthenakis, director of the Center for Life Cycle Analysis at Columbia University, and Ken Zweibel, the director of the Solar institute at George Washington University, wrote that a “massive string of photo-voltaic panels could be placed on the Mexican side of the wall. They said a solar wall may be more practical than a traditional wall.

“We estimate that building a roughly 2,000-mile-long single-row solar wall would cost less than $1 billion, plus site preparation costs such as fencing and road construction,” they wrote. “Compare that with Mr. Trump’s wall, which could cost tens of billions of dollars.”

Trump has been criticized by some of his supporters for what they see as a lack of attention to one of his key campaign promises. Construction has not begun and there has been resistance from Congress. The White House insists that the plan is on track.

More From FoxNews: