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Estimated capital expenditure and operational costs for a 10MW true base-load OTEC AI rig.
| Category | Item | Estimated Cost (USD) |
|---|---|---|
| CAPEX | Vessel Acquisition (Decommissioned Hull) | $5,000,000 |
| CAPEX | OTEC Power Plant (10MW Turbines & Heat Exchangers) | $40,000,000 |
| CAPEX | Cold Water Pipe & Mooring System | $15,000,000 |
| CAPEX | Data & Electrical Deck (Switchgear & Cooling Manifolds) | $10,000,000 |
| CAPEX | EPC, Contingency & Legal | $5,000,000 |
| Total CAPEX | $75,000,000 | |
| Category | Item | Estimated OPEX (Annual) |
|---|---|---|
| OPEX | Day-Shift Crew (Marine Techs, Server Admins) | $1,500,000 |
| OPEX | Maintenance & Spares (Biofouling scrubbing, pumps) | $1,500,000 |
| OPEX | Insurance & Admin (H&M, Political Risk, Overhead) | $1,000,000 |
| OPEX | Fuel & Cooling Power Consumption | $0 |
| Total OPEX | $4,000,000 | |
Return profile based on Triple-Net (NNN) lease agreements with Tier-1 AI hyperscalers, offering a 15% discount against onshore alternatives.
| Metric | Calculation | Result |
|---|---|---|
| Total Generation (24/7) | 10,000 kW × 8,760 hours | 87,600,000 kWh / yr |
| Hyperscaler Savings | $0.305 (TX) vs $0.26 (Us) | ~$3,960,000 / yr Saved |
| Estimated Revenue | 87,600,000 kWh × $0.26/kWh | $22,776,000 / yr |
| Estimated Operating Costs | (Crew, Maintenance, Insurance) | -$4,000,000 / yr |
| Annual Net Income (Pre-Tax) | $22.77M Rev - $4.0M OPEX | $18,776,000 / yr |
| Payback Period | $75,000,000 CAPEX / $18.77M Net Income | ~4.0 Years |
Comparing the unit economics for a 10MW 24/7 AI Data Center.
| Metric | Terrestrial Solar (50 MWp) | Offshore OTEC (10 MW) |
|---|---|---|
| Baseload Power | Requires 180 MWh Battery Farm ($63M) | True 24/7 Thermodynamic Power ($0 Battery) |
| Liquid Cooling | Requires Mechanical Chillers ($10M + 40% Power Load) | Free 4°C Deep Ocean Water ($0) |
| Land / Grid Interconnection | Massive acreage + 3-5 year grid queue | No land required + Sovereign Mobility Hedge |
| Total Initial CAPEX | $123,000,000 | $75,000,000 |
| Long-Term OPEX | High (Battery replacement + Grid Power) | Low ($4M/yr Maritime & Maintenance) |