Hydroelectric Power:

(a) Estimate the required flow for a 15,000 MWe hydroelectric installation as a function of the effective hydraulic head from 10 to 300 m.

(b) From the following oceanic-based power technologies discussed in the course: OWCs, Pelamis, tidal barrage systems, underwater turbines, or OTEC; do any possess the potential, based on the current state of the technology, to furnish the same magnitude of energy and CO2 GHG reduction (kilogram mass basis) as the aforementioned hydroelectric plant? Support your answer with calculations and references.