• "Electric Power Saving Fan Options For Cow Cooling," by Thomas A. Schultz and Paul Williams. This article from the California Energy Commission discusses various cooling methods used to improve cow comfort and productivity during summer months.
• Western's Energy Services program offers a wealth of efficiency and renewable energy resources on their Energy Solutions Database (ESD) website.  This robust database offers thousands of reliable and accurate information resources on a wide variety of topics, including agricultural efficiency, hand-picked by professional engineers and research librarians. Included in those resources are a collection of Questions and Answers received through the Energy Services Clearinghouse.
• Michigan Farm Energy Audit 
• Reduce Energy Costs in Agriculture.  Tips from the Mississippi State University Extension Service.

Fact Sheets

• Strategies for Managing Energy related Grain Drying Costs