Advanced closed-loop geothermal architecture supplying a modern data centre

R. ROCKEFELLER S.C. ADVANCED ENERGY PLATFORM

RePG GEOTHERMAL AGS

A cinematic view of the documented platform: a factory-built surface ORC power block, a separate sealed subsurface AGS pathway and modular configurations for data centres, industry and geothermal infrastructure.

Explore the architecture Open technical dossier

55°Ccontrolled acceptance-test point

TRL 9surface ORC evidence

TRL 7integrated AGS pathway

250 kW → 30 MW+documented proposed configurations

01 / DUAL CLOSED-LOOP ARCHITECTURE

Two circuits. One controlled thermal transfer.

The host geothermal circuit and the organic working-fluid circuit do not mix. Their only connection is thermal energy transferred across the heat exchanger.

Rock heat

The documented sealed-loop AGS concept is designed to collect heat from warm rock by conduction.

Subsurface circuit

A sealed geothermal circuit carries the captured thermal energy to the surface.

Heat exchanger

Heat crosses the exchanger while the geothermal and ORC fluids remain separate.

ORC electricity

A closed organic-fluid cycle drives the turbine-generator and recirculates continuously.

No aquifer contactin the documented sealed AGS concept

No make-up waterfor that sealed subsurface architecture

Low-temperature conversion55°C documented under controlled test conditions

Factory modularserial and parallel design configurations

Closed-loop geothermal drilling and engineering scene

02 / MATURITY · CLEARLY DISTINGUISHED

Operational proof and AGS pilot pathway.

The surface ORC power block has measured operating evidence. The integrated subsurface AGS configuration remains a separate 1 MW qualification and validation programme in Bursa.

DOCUMENTED OPERATIONSTRL 9

Surface ORC power block

Factory-built, containerised and remotely monitored through SCADA at the documented Hayat Kimya and AFJET installations.

QUALIFICATION IN PROGRESSTRL 7

Integrated subsurface AGS

A 1 MW qualification pilot pathway for subsurface integration, real-environment validation and later commercial scale-up.

Advanced geothermal energy concept for a modern data centre

03 / APPLICATIONS

One power platform. Four operating contexts.

The same low-temperature ORC platform supports heat sought underground and heat already available across industrial and geothermal infrastructure.

DATA / AI

Data centres

Documented modular configurations designed around continuous-duty, on-site power requirements.

INDUSTRY

Industrial waste heat

Electricity recovered from rejected process heat without mixing with the host stream.

GEOTHERMAL

Existing infrastructure

Power conversion downstream of operating geothermal circuits, as documented at AFJET.

NETWORK

Modular energy fields

Proposed serial and parallel configurations from a 250 kW entry block to 30 MW+ fields.

04 / MEASURED FIELD EVIDENCE

Measured data, not decorative claims.

Hayat Kimya and AFJET document the surface conversion platform under two different thermal regimes. These records do not represent a commercially operating integrated AGS field.

INSTALLATION 01 · TÜRKİYE

Hayat Kimya

Industrial flue-gas heat recovery

75 kWeinstalled

48.4 kWmean net

97.5%availability

4,248 hinitial period

205.5 MWhinitial net generation

Figures refer to the monitored July 2024–January 2025 period. The report separately records later host-interface maintenance and the reported return to service.

INSTALLATION 02 · TÜRKİYE

AFJET

Existing geothermal reinjection circuit

15 kWeinstalled

12.7 kWmeasured net

72 → 66°Cinlet / return

25 m³/hsource flow

175 kWtthermal input

The unit was connected downstream of already-permitted infrastructure; no new well was drilled for this documented field installation.

Open the complete field-evidence reportCONFIGURATION · PERFORMANCE · DESIGN ENVELOPES

05 / CERTIFICATIONS & COMPLIANCE

Three scopes, clearly separated by scope.

The file distinguishes management-system certificates, engineering test reports and the RE-75 kW product attestation. It does not present the full integrated AGS concept as one universally certified system.

MANAGEMENT SYSTEMS