National and state governments, working with utilities and businesses, need to connect America鈥檚 three electric grids, so that we can carry renewable power from where it鈥檚 produced 鈥 concentrated solar energy in the desert Southwest, wind energy in the Great Plains 鈥 to where it鈥檚 needed in the Northeast, Midwest, and so on. Otherwise, we won鈥檛 be able to use our renewable resources effectively.