Server Heat Load
50.0 MWth
Thermal Recapture
0.0%
Air-Cooled Racks
40°C Low-Grade
Compute
Source
Source
Thermal
Router
Router
Atmospheric Reject
50.0 MWth
Evaporative Loss
Modular ORC Generator
0.0 MWth in
Absorption Chiller
0.0 MWc
Municipal Grid Return
0.0 MWe
Behind-the-Meter Credit
Monte Carlo Risk Model
BASEStochastic 3-scenario · Optimistic / Base / Pessimistic
Optimistic IRR
—
Base IRR
—
Pessimistic IRR
—
Phase 1 Cost Model
Structural Assessment
$1.2M ±16.7%
Thermal Load Profile
$0.8M ±12.5%
Hydrogeological Survey
$0.6M ±20.0%
Regulatory Alignment
$0.4M ±25.0%
Phase 1 Total
$5.8M
Brownfield Site Params
Site Size
50–150K sq ft
Existing PUE
1.6–2.0
Existing WUE
0.8–1.5 L/kWh
Elect. Capacity
15–40 MW
Retrofit Window
18–36 months
Market Size
5,400+ sites
24-Month Implementation Timeline
Critical Path Milestones
Day 1–30: Phase 1 engineering authorization ($5.8M)
Month 6: Decision Gate — ORC / HTHP procurement LOIs
Month 12: Hybrid loop online, Tier 2 provisional cert
Month 18: Membrane distillation array commissioned
Month 24: Full SYNC 3.0 compliance + ZLD validation
D2C vs Immersion Decision Matrix
Consolidated from 6 AI model simulations · Claude · DeepSeek · Qwen3 · Nemotron · Trinity · MiniMax
| Parameter | D2C Tier 2/3 | Immersion T4 |
|---|---|---|
| CapEx | $12.5M | $28.8M |
| Payback | 3.2 yrs | 4.8 yrs |
| Mean IRR | 22.4% | 18.7% |
| 20-yr NPV | >$40M | >$40M |
| PUE Target | 1.25 | 1.08 |
| Water Save | 95% | 99% |
| WUE (ZLD) | ≤0.25 | 0.00 |
| Risk Level | Lower | Higher |
| GPU Support | Good | Excellent |
| Recommend | Cost-Constrained Fast ROI |
AI Workloads Max Efficiency |
Recommended Pathway
Begin with D2C retrofit → achieve Tier 2/3 cert → then phase to Full Immersion for Tier 4 SYNC compliance. Zero taxpayer-cost model: data center operator funds full infrastructure modernization in exchange for permitted compute footprint drawing zero net groundwater.
Component Engineering Specifications — Phase 1 Authorization $5.8M APPROVED
Absorption Chiller
Mfr.Carrier / Natural Sys
COP0.7–1.4
InputLow-grade waste heat
OutputResidual air-load cooling
LOIDay 30
High-Temp Heat Pump
Mfr.Trane / Fenix
Temp. Liftup to 160°C
COP2.5–4.0
RoleDistrict heat upgrade
AgreementDay 30
ORC Generator
TypeModular Organic Rankine
Efficiency8–15%
RoleBehind-meter generation
FeedCaptured thermal mass
OutputMunicipal grid return
Hydrogeo Survey
FirmHaystack Geolabs
Budget$0.6M ±20%
ScopeThermal, geologic, munic.
Duration30-day contract
GateCity Council align.