Construction is underway on a $1.7 billion solar and battery storage project in Texas that will turn existing coal mining land into a hub of clean energy generation. Panamint Capital announced last week that it broke ground on the 1.2-gigawatt Big Rooter Power solar farm in Bremond, about halfway between Dallas and Houston. The Calvert mine is a 19-million-ton surface lignite mine adjacent to the Twin Oaks coal plant. The largest of these projects is the 186-MW Tilden Solar Project in southern Illinois, followed by the 111-MW Martin County Solar Project in eastern Kentucky, which both went online last year atop abandoned coal mines. (Toyota)In Louisiana, the 240-MW Dolet Hills Solar Project is now being built on a former coal mine property.