Hydrodam possesses twin generators that provide power supply to C.E.L.L. needs through out the Liberty Dome. It's primary function was to power C.E.L.L. automated defense grid under the dome. The Dam also is heavily fortified with huge numbers of heavily armed C.E.L.L. troops and a gunship. One of the nanosuit logs reveals that destroying the dam will drastically reduce CELL's defense capacity accross the dome (approx 75% reduction). Defense systems of primary target Energy Nexus were powered from this location.