Just south of San Antonio, 113 acres of land is covered by 223,000 modules that generate enough electricity for 1,800 homes.
The Blue Wing Solar Project has generated interest from across the globe.
On Tuesday, Gregory Barker, the minister of energy for the U.K., took a tour of the facility.
"I’ve never seen something on this scale before," Barker said.
Barker is touring facilities in Houston and Georgia as well as the San Antonio facility.
"This is now a technology that is going to be rolled out around the world. It's fascinating to see that San Antonio is really ahead of the pack," he said.
Barker said he would like to see Great Britain reach about 20 gigawatts by 2020.
"(There's) particular interest in the potential for distributing solar on Brownfield sites on the roofs of factories offices and houses," he said.
Along with increasing the solar panel production in his home country, Barker is also using the trip for economic purposes.
He brought along six companies that are also looking for investment opportunities in San Antonio and Texas.
Barker said solar is part of the energy future for the world and he wants his country on the forefront, making the solar panels and then using them.
“People are excited about those opportunities,” Barker said.