FR-GP South America Updated 2026-08-20

France (Guadeloupe) Geothermal Screening

Geothermal screening assessment identifies 39.8% prospective land reaching 185°C by 5.5 km depth in France (Guadeloupe).

Key Geothermal Metrics

Land Reaching 185°C by 5.5 km High Potential
39.8%

Primary baseline screening criterion

Shallowest Depth to 200°C Shallow
3.3 km

Minimum drill depth for high enthalpy

Peak Temperature at 5 km Depth Superhot
318.5 °C

Maximum modeled temperature

Typical Geothermal Gradient Volcanic / Rift
59.3 °C/km

Average to 5 km depth (15°C surface)

Grid Connectable Prospective Area High Accessibility
91.6%

Hot territory within 50 km transmission

Stored Heat In-Place (3–7 km) 1 ZJ = 10²¹ Joules
121.8 ZJ

Thermal volume in place (>80°C baseline)

Depth vs. Temperature Matrix (% Land Area)

Proportion of national territory exceeding target isotherm at specified depth

0.1° Inversion Grid
Isotherm 3.0 km 4.0 km 5.0 km 6.0 km 7.0 km 8.0 km
150°C 16.3% 37.3% 50.6% 64.8% 97.4% 100%
175°C 14.2% 28% 42.8% 57.1% 83.3% 100%
200°C 11.8% 27.7% 42.9% 49.1% 76.2% 94.2%
225°C 9.4% 18.9% 36.1% 44.6% 66.1% 79.7%
250°C 9.9% 18.5% 26.5% 35.8% 50% 66.4%

4-Stage Geothermal Resource & Infrastructure Funnel

Progressive screening from gross national territory down to grid-connected & populated prospective zones

1 Whole country
1 628 km² 100%
2 Reaches 185°C by 5.5 km
648 km² 39.8%
3 ...and within 50 km transmission
594 km² 36.5%
4 ...and within 100 km town
492 km² 32.9%

Geological Setting & Subsurface Parameters

Lithology, basement thickness, stress and thermal boundary constraints

Median Depth to 200°C Isotherm 5.1 km
Best 10th Percentile Depth to 200°C 4.2 km
Median Temperature at 5 km Depth 215 °C
Best 10th Percentile Temp at 5 km 287.2 °C
Median Sediment Thickness 0.3 km
Sediment / Hard-Rock Well Share 28.6%
Territory Under 1 km Sediment Cover 90.8%
Lithostatic Pressure at 5 km Depth 136.1 MPa
Moho Crustal Discontinuity Depth 36.7 km
Thermal Lithosphere Thickness 99.4 km
Curie Temperature Isotherm Depth 16 km
Model Temperature Spread Uncertainty (200°C) ±0.7 km

Transmission Grid & Demand Colocation

Infrastructure interconnectivity and urban power demand proximity

High-Voltage Transmission Network Length 1 276 km
Land Area Within 25 km of Grid 71.3%
Land Area Within 50 km of Grid 91.6%
Land Area Within 100 km of Grid 96.7%
Average Proximity to Nearest Substation / Line 24.6 km
Urban Centers (>10,000 Population) 7
Total Urban Population 1.9 M
Prospective Resource Colocated Near Demand (>1M Pop) 59.8%

Target Sensitivity & Deep EGS Upside

Sensitivity of prospective resource area to adjusted depth and temperature thresholds

150°C Baseline at 5.5 km 63.7% of national territory reaches 150°C at 5.5 km depth
185°C Baseline at 7.5 km 71.6% of national territory reaches 185°C at 7.5 km depth

Global Peer Benchmarking (vs. 278 Assessed Jurisdictions)

Relative ranking distribution of France (Guadeloupe) across 11 standardized geothermal indicators

France (Guadeloupe) Rank Global Peer Spread
Shallowest 200°C depth
3.3 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 67th percentile
Peak temp at 5 km
318.5 °C Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 87th percentile
Prospective land area (>185°C at 5.5 km)
39.8% Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 66th percentile
Stored heat in-place (3-7 km)
121.8 ZJ Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 65th percentile
Typical geothermal gradient
59.3 °C/km Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 85th percentile
Grid proximity (<50 km)
91.6% Top 10%
P0 (Lowest) P50 (Median) P100 (Highest) • 92th percentile
Thin sediment coverage (<1 km)
90.8% Top 10%
P0 (Lowest) P50 (Median) P100 (Highest) • 91th percentile
Curie isotherm depth
16 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 65th percentile
Moho crustal thickness
36.7 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 34th percentile
Model temperature uncertainty spread
±0.8 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 53th percentile
Urban demand colocation
25.9% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 65th percentile
Asset-Level 3D Simulation Available

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Analytical Geothermal Assessment & Discussion: France (Guadeloupe)

Subsurface thermal interpretation, model uncertainty, infrastructure colocation, and resource quality analysis

Resource Overview

Geothermal assessment for France (Guadeloupe) indicates volcanic_arc geological controls governing subsurface heat transport, yielding 39.8% of land area reaching the baseline target of 185°C at 5.5 km depth.

Uncertainty & Model Variance

Thermal inversion across France (Guadeloupe) shows consistent model convergence with constrained standard deviations across deep crustal layers.

Grid & Infrastructure Colocation

National electrical transmission coverage positions approximately 91.6% of prospective geothermal ground within 50 km of existing high-voltage corridors.

Geological & Basement Setting

Subsurface lithology is characterized by volcanic arc dynamics with median sediment thickness of 0.3 km and crustal thickness of 36.7 km.

Stored Heat Volume

Accessible thermal energy in place between 3 km and 7 km depth above 80°C totals 121.8 Zettajoules (ZJ).

Peer Comparison

Benchmarked against 237 global assessment jurisdictions, France (Guadeloupe) demonstrates competitive positioning across heat flow, infrastructure, and basement competence indicators.

Target Sensitivity Analysis

Screening at 150°C baseline at 5.5 km increases prospective territory, demonstrating substantial deep EGS resource headroom.

Screening Methodology, Parameters & Limitations

This screening assessment for France (Guadeloupe) is generated from Geothermal Radar Data Pack 2026.1 utilizing global 0.1° hex-grid thermal inversion across 18 model cells (land area: 1 628 km²). Baseline prospective criterion is defined as reaching 185°C at or above 5.5 km depth with surface temperature normalized to 15°C.

  • Screening estimates represent regional-scale heat in place and do not replace localized 3D seismic or exploratory drilling.
  • Model uncertainties expand in regions with sparse deep boreholes and complex thrust fault kinematics.
  • Grid proximity indicators reflect line-of-sight distance to high-voltage transmission and do not account for local substation thermal capacity.
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