Abstract: A modular power distribution system includes a three level approach to power distribution: a power module level, a transfer module level, and a distribution module level. At each level, the number of modules used can be varied based on the power requirements of the site. The power modules receive power from either a main, off-site generator (such as from an electric utility), or from an in-module backup generator. Additionally, the power, transfer, and distribution modules at each of the levels are arranged in a redundant topology, so that if any of the modules should fail, the remaining modules seamlessly assume the functions of the failing module.