FILE - Union Pacific CEO Jim Vena talks in front of a locomotive simulator used to train engineers at the company's headquarters in Omaha, Neb., Dec. 15, 2023. (AP Photo/Josh Funk, File)

Cattle graze under solar panels Tuesday, April 28, 2026, at a farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

Cattle graze under solar panels Tuesday, April 28, 2026, at a farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

Anna Clare Monlezun, a rangeland scientist, connects a hose while working near solar panels Tuesday, April 28, 2026, at a solar farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

Cattle graze under solar panels Tuesday, April 28, 2026, at a farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

Loran Shallenberger, vice president of regenerative energy and agrivoltaics at Silicon Ranch, clears weeds out from under solar panels Tuesday, April 28, 2026, at a farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

A calf stands under solar panels Tuesday, April 28, 2026, in Christiana, Tenn. (AP Photo/Joshua A. Bickel)

Crimson Clover grows in a field under solar panels Tuesday, April 28, 2026, at a farm in Christiana, Tenn. (AP Photo/Joshua A. Bickel)