A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma 

A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma 

 Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma

Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma

 A drilling rig operates in south Oklahoma City

A drilling rig operates in south Oklahoma City

 The coal fired Muskogee Generating Plant in Muskogee Oklahoma

The coal fired Muskogee Generating Plant in Muskogee Oklahoma

 A flare stack burns off natural gas at the Wynnewood refinery in Wynnewood, Oklahoma.  

A flare stack burns off natural gas at the Wynnewood refinery in Wynnewood, Oklahoma.  

 A large wind farm at sunset in Seiling, Oklahoma.

A large wind farm at sunset in Seiling, Oklahoma.

 Pipelines run to Enbridge Inc.'s crude oil storage tanks at their tank farm in Cushing, Oklahoma.

Pipelines run to Enbridge Inc.'s crude oil storage tanks at their tank farm in Cushing, Oklahoma.

 Cars pass by the Wynnewood refinery at sunset in Wynnewood, Oklahoma. 

Cars pass by the Wynnewood refinery at sunset in Wynnewood, Oklahoma. 

 Enbridge Inc.'s crude oil storage tanks are seen during a tour of their tank farm in Cushing, Oklahoma

Enbridge Inc.'s crude oil storage tanks are seen during a tour of their tank farm in Cushing, Oklahoma

 A drilling site south of Stillwater, Oklahoma

A drilling site south of Stillwater, Oklahoma

 An oil rig operates at night near Pawnee Buttes Colorado

An oil rig operates at night near Pawnee Buttes Colorado

 The Devon Energy Center stands out above the rest of the skyline in Oklahoma City.

The Devon Energy Center stands out above the rest of the skyline in Oklahoma City.

 Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma.

Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma.

 The smoke stacks at the Muskogee Power Plant in Fort Gibson, Oklahoma. The plant is one of the states largest coal fired power plants. 

The smoke stacks at the Muskogee Power Plant in Fort Gibson, Oklahoma. The plant is one of the states largest coal fired power plants. 

 A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma.

A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma.

 Cattle graze in front of the Wynnewood refinery in Wynnewood, Oklahoma. Nick Oxford for The New York Times

Cattle graze in front of the Wynnewood refinery in Wynnewood, Oklahoma. Nick Oxford for The New York Times

 A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma 
 Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma
 A drilling rig operates in south Oklahoma City
 The coal fired Muskogee Generating Plant in Muskogee Oklahoma
 A flare stack burns off natural gas at the Wynnewood refinery in Wynnewood, Oklahoma.  
 A large wind farm at sunset in Seiling, Oklahoma.
 Pipelines run to Enbridge Inc.'s crude oil storage tanks at their tank farm in Cushing, Oklahoma.
 Cars pass by the Wynnewood refinery at sunset in Wynnewood, Oklahoma. 
 Enbridge Inc.'s crude oil storage tanks are seen during a tour of their tank farm in Cushing, Oklahoma
 A drilling site south of Stillwater, Oklahoma
 An oil rig operates at night near Pawnee Buttes Colorado
 The Devon Energy Center stands out above the rest of the skyline in Oklahoma City.
 Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma.
 The smoke stacks at the Muskogee Power Plant in Fort Gibson, Oklahoma. The plant is one of the states largest coal fired power plants. 
 A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma.
 Cattle graze in front of the Wynnewood refinery in Wynnewood, Oklahoma. Nick Oxford for The New York Times

A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma 

Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma

A drilling rig operates in south Oklahoma City

The coal fired Muskogee Generating Plant in Muskogee Oklahoma

A flare stack burns off natural gas at the Wynnewood refinery in Wynnewood, Oklahoma.  

A large wind farm at sunset in Seiling, Oklahoma.

Pipelines run to Enbridge Inc.'s crude oil storage tanks at their tank farm in Cushing, Oklahoma.

Cars pass by the Wynnewood refinery at sunset in Wynnewood, Oklahoma. 

Enbridge Inc.'s crude oil storage tanks are seen during a tour of their tank farm in Cushing, Oklahoma

A drilling site south of Stillwater, Oklahoma

An oil rig operates at night near Pawnee Buttes Colorado

The Devon Energy Center stands out above the rest of the skyline in Oklahoma City.

Crude oil storage tanks are seen from above at the Cushing oil hub in Cushing, Oklahoma.

The smoke stacks at the Muskogee Power Plant in Fort Gibson, Oklahoma. The plant is one of the states largest coal fired power plants. 

A pump jack operates at a well site leased by Devon Energy Production Company near Guthrie, Oklahoma.

Cattle graze in front of the Wynnewood refinery in Wynnewood, Oklahoma. Nick Oxford for The New York Times

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