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Agriculture production input prices are certainly unstable in a highly volatile market. Among the largest annual expenses for producers is the cost for irrigating and post-harvest treatments of their crops, controlling animal housing facilities, managing energy use in often outdated dairy systems under daily use and wear, and greenhouse production facilities using heating through Winter production and ventilation during the Summer months. To help manage energy price variability of recent times, Purdue has built a service to support making improvements and a toolbox for producers to utilize when increasing energy efficiency on-farm.

On-Farm Energy Efficiency Audit Program

Purdue Extension is equipped to assit you with an energy audit for various farm operation systems. This program involves evaluating and making calculations of your existing system efficiency, and comparing it to the proposed new systems. Producers may use this audit report to apply for the USDA REAP program, or through other incentive programs facilitated by local utility companies.  Chad Martin is a Renewable Energy Extension Specialist within the Purdue Ag & Biological Engineering Department, and is a Certified Farm Energy Auditor according to ASABE Standards.  He works closely with Dr. Klein Ileleji who is the Extension Engineer for the Purdue ABE Department.  Contact us to visit further about services available for the following sectors:

  • Grain Drying
  • Irrigation Improvements
  • Dairy Farm Operations
  • Livestock Confinement Systems
  • Greenhouse Growing Facilities
  • Aquaculture Systems

Please complete the following energy audit request form and return to the Purdue Agricultural and Biological Engineering Department - Chad Martin, Renewable Energy Extension Specialist.

Energy Audit Request Form (PDF)


On-Farm Efficiency Tools

Energy Estimator: Grain Drying
(The online estimator tool is presently offline for maintenance, please contact Chad Martin for assistance: martin95@purdue.edu)

NRCS Energy Estimator Tools

for Animal Housing, Irrigation, Nitrogen Application, and Tillage. Determining Energy Needs of your Current Operating Systems

Heating Fuel Comparison Calculator

from the U.S. Energy Information Administration.
MS EXCEL 129kb

Energy Cost Calculator for lighting and industrial equipment

U.S. Department of Energy Energy Efficiency and Renewable (EERE) Energy Web site

On-Farm Efficiency Publications

Post Harvest Pocket Guide - Order Form
(ID 215)

ASABE Standard for On-Farm Energy Audits
(July, 2009)


Turning Back The Thermostat (Not a Matter of Opinion, but a Matter of Cost)

(AE-94) (PDF)

Environmental Control for Confinement Livestock Housing

(AE-96) (PDF)

Natural Ventilation for Livestock Housing

(AE-97) (PDF)

Wind and Snow Control Around the Farm

(NCR-191) (PDF)

Planning Farm Shops For Work And Energy Efficiency

(AE-104) (PDF)

Worksheet For Sizing Livestock Housing Environmental Control Systems

(AE-109) (PDF)

Matching Multiple Ventilation Fans

(BV-1-W) (PDF)

Insulating Livestock And Other Farm Buildings

(AE-95) (PDF)

Comparable Costs of Various Energy Sources for Irrigation Pumping

(AE-111) (PDF)

On-Farm Efficiency Links

USDA Rural Development REAP Grant and Loan Program Brochure (PDF)

USDA Rural Development - REAP Grant Program

USDA Rural Development - REAP Loan Program


Environmental Law and Policy Center (farmenergy.org)


Purdue Technical Assistance Program

Energy Efficiency Services for the Manufacturing Sector

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