Following please find of links to help learn about solar energy for agriculture.
This publication is called “An Introduction to Solar Energy Applications for Agriculture,” (PDF format) and reading it should be the first step any farmer interested in using solar energy should read.
The EERE (Energy Efficiency and Renewable Energy) branch of the Department of Energy created this site to provide farmers information on solar energy. The site has general information and provides links for farmers to learn more about the individual applications of solar energy.
A short introductory article by the Union of Concerned Scientists about solar energy systems for agriculture. The article offers advice, links, and information to help make purchasing easier.
This document published by the National Renewable Energy Laboratory (PDF format) provides an introduction to Solar Water Heating.
This government site has excellent information and links regarding solar energy. This site answers many specific and how-to questions regarding solar systems.
The National Sustainable Agriculture Information Service (by NCAT) created this site with information, solar success stories and links to other resources. For example, check out two excellent documents: “Solar-Powered Livestock Watering Systems”, and “Solar Greenhouses Resource List.”
This document from ATTRA provides a helpful description of livestock watering systems.