University of Missouri Extension

G1979, New January 2015

Energy Efficiency and Farm Water Systems

Don Day
Extension Associate
College of Agriculture, Food and Natural Resources
Amanda Marney
Extension Associate
Department of Biological Engineering
Joseph Kendrick
Extension Associate
Department of Biological Engineering
Brian Robertson
Extension Associate
Department of Biological Engineering

Farm water systems are often neglected when it comes to energy efficiency. Although the savings to be realized may not be as great as perhaps energy-efficient lighting, the return can be fairly short for some energy-saving investments. Here are some general guidelines regarding farm water systems:

Pump houses

Pump houses need to be designed to keep water systems from freezing. Several pump houses evaluated in the MAESTRO program had considerable air leakage and were not adequately insulated. The average cost of improvements to the pump houses was estimated at $448 per farm with an annual energy cost savings of $267 per farm. Adding insulation and sealing air leaks in the pump houses represent the main costs, improvements with a 1.7-year payback.

Spray-foam insulation can be used to seal leaks and insulate many pump houses. With larger air leaks, it might be more cost-effective to seal them with caulk or foam insulation and use batt insulation to increase the R-values in walls and ceilings. Pump houses should have a minimum R-value of 20 in the walls and 30 in the ceiling.

Livestock water systems

Energy-efficiency investments in livestock waterers can be as simple as insulating the waterers or adjusting the thermostat. Here are some guidelines regarding energy efficiency for stock waterers:

In the MAESTRO program, energy assessments were made for stock waterers for 57 farms. The average estimated installed cost was $1,677 with an estimated average energy savings of $278, giving these investments an average payback of six years. Payback ranged from 0.1 to 76 years, so the estimated payback from energy-efficient investments can vary considerably from farm to farm.

Solar water systems

In some cases, solar pumping systems might be feasible for farm water systems. Solar pumping is most feasible when a system is needed in a remote location and the cost of running electric lines would be expensive. To be sure water will be supplied during cloudy weather, install batteries with the solar system to carry through those cloudy days.

Water heaters

Understanding the proper use and maintenance of water heaters will help you ensure that they run efficiently. It is also important to properly insulate water heaters. Keep these general guidelines in mind with regard to water heaters:

Additional information

More information on solar pumping systems can be found in the MU Publication, Pumps and Watering Systems for Managed Beef Grazing, EQ380, and Solar Powered Livestock Watering Systems, National Sustainable Agriculture Information Service,

G1979 Energy Efficiency and Farm Water Systems | University of Missouri Extension

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