Oil pump jack and wind turbines at sunset in central Oklahoma near Calumet.


An oil pump jack stands in silhouette against a sunset with electrical power generating windmills in the background.


Size: 7360px × 4912px
Location: Oklahoma, USA
Photo credit: © James Pratt / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: contrast, efficiency, electricity, energy, green, jack, oil, oklahoma, petroleum, power, pump, sunset, turbine, wind, windmill