1. Understanding Oklahoma’s Wind Energy Industry
Dr. Shannon L. Ferrell
Assistant Professor – Agricultural Law
OSU Department of Agricultural Economics
Photo source: Stephanie Buway

2. A sense of turbine scale
Source: Paul Gipe, Wind Energy Basics (Chelsea Green Publishing Co., 1999)

3. Tower foundation preparation 21’ X 21’ X 17’ deep - 30 concrete trucks
Source: Western Farmers Electric Cooperative

5. Tower staging Towers arrive at site (typically 3 sections per tower)
43.3 Tons
46.8 Tons
41.5 Tons
Source: Western Farmers Electric Cooperative

6. (not permanently installed)
Nacelle staging
Dude
0.09 tons
(not permanently installed)
Nacelle
51 tons
Rotor Hub
20 tons
Source: Western Farmers Electric Cooperative

7. Turbine blades 115 feet long 9.5 tons
Source: Western Farmers Electric Cooperative

11. Final configuration 328 ft. top of rotor disc 230 ft. hub height
Apprx. 100 ft. min. ground clearance
Source: Western Farmers Electric Cooperative