www.poweredbychoice.org nrg also pronounced ENERGY (nr-j) n. 1. The ability or capacity to do work or to produce change. 2. An innovative cause campaign for teens (13-18) to lead change for nutrition and activity choices.nrg-Powered by Choice is about leading changes that support healthy eating and physical activity! nrg is designed for existing social networks in schools and communities to lead the cause for improved choices for healthy eating and physical activity. It doesn’t matter if you belong to the school newspaper, football team, math club, or 4H, you can all be part of making powerful and healthy changes.