Abstract

A deep-subsea OTEC concept is simulated, and a threefold increase in exergy efficiency can be achieved as to the topside one. On the environmental aspect, a deep-subsea OTEC concept can bring about negative CO₂ emissions, which poses a positive environmental risk. On the economics, with appropriate public funding, a 100 MW deep-subsea OTEC asset would cost about USD₂₀₁₀ 600 million. On the life-cost of energy, values between 40-60 USD₂₀₁₀/MWh are predicted.

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