Article snippet: President Air Force One on his trip to France Wednesday. Asked if he was "joking about solar," a suggestion he made in reference to the wall during a June campaign-style rally in Iowa -- and was included in the plans of at least one contractor submitting plans for the blockade -- Trump said there was "a chance" it could be done and that "major companies" are looking at it. "Look, there's no better place for solar than the Mexico border -- the southern border," said Trump, according to a White House transcript. "And there is a very good chance we can do a solar wall, which would actually look good. But there is a very good chance we could do a solar wall." During the June rally, the president said that adding the electricity-generating panels to the wall could "create energy and pay for itself," but during last week's G-20 summit, in which he met with Mexican Republican presidential nomination. "You don't need 2,000 miles of wall because you have a lot of natural barriers," he said Wednesday. "You have mountains. You have some rivers that are violent and vicious. You have some areas that are so far away that you don't really have people crossing. So you don't need that. But you'll need anywhere from 700 to 900 miles." Almost 700 miles of the border currently feature some form of fencing, a result of the 2006 Secure Fence Act. ABC News' Justin Fishel and Geneva Sands contributed to this report. Link to the full article to read more