Entergy Corp. and The Arbor Day Foundation are providing free trees to the utility's residential customers in Texas, Louisiana, Arkansas, and Mississippi to help conserve energy through strategic planting.

Entergy customers can reserve up to three trees at http://www.Entergy.com/arborday. In exchange, customers are instructed on how to plant the trees in a location that will reduce energy consumption. Customers are also asked to care for their trees.

The trees also improve air quality, help offset greenhouse gas emissions, reducing storm water run off.

An online tool allows Entergy customers to map their house, select a tree with energy-saving potential, view the best energy-saving locations to plant, and receive an estimate of the annual savings they will receive as the tree grows. The 2- to 4-foot-tall trees will then be delivered directly to the customer to plant this fall in the designated location.