Abstract: A single transportable oversized or extended support base is provided for a conventional equipment shelter and the associated power source. The shelter and power source are separately affixed to the base while at the place of manufacturing to form a transportable unitary shelter facility that is easily and efficiently installed at the use site. Such combination avoids the additional labor and expense associated with installing equipment such as a generator in a separate room within the building because it eliminates the need for the extra door, and larger wall, roof, and floor panels, ventilation systems, environmental controls and related items.