PY South America Updated 2026-08-20

Paraguay Geothermal Screening

Geothermal screening assessment identifies 8% prospective land reaching 185°C by 5.5 km depth in Paraguay.

Key Geothermal Metrics

Land Reaching 185°C by 5.5 km Low Prospect
8%

Primary baseline screening criterion

Shallowest Depth to 200°C Deep Target
5.9 km

Minimum drill depth for high enthalpy

Peak Temperature at 5 km Depth Direct Heat
181.7 °C

Maximum modeled temperature

Typical Geothermal Gradient Elevated
34.4 °C/km

Average to 5 km depth (15°C surface)

Grid Connectable Prospective Area High Accessibility
89.8%

Hot territory within 50 km transmission

Stored Heat In-Place (3–7 km) 1 ZJ = 10²¹ Joules
65.3 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 1.1% 2.7% 3.9% 5% 6.5% 8.8%
175°C 0.9% 1.5% 2.9% 3.6% 4.9% 5.9%
200°C 0.5% 0.8% 1.5% 2% 3% 3%
225°C 0.1% 0.2% 0.3% 0.4% 0.6% 0.7%
250°C

4-Stage Geothermal Resource & Infrastructure Funnel

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

1 Whole country
406 752 km² 100%
2 Reaches 185°C by 5.5 km
32 540 km² 8%
3 ...and within 50 km transmission
29 221 km² 7.2%
4 ...and within 100 km town
25 597 km² 6.4%

Geological Setting & Subsurface Parameters

Lithology, basement thickness, stress and thermal boundary constraints

Median Depth to 200°C Isotherm 8.6 km
Best 10th Percentile Depth to 200°C 6.5 km
Median Temperature at 5 km Depth 141 °C
Best 10th Percentile Temp at 5 km 167 °C
Median Sediment Thickness 3.4 km
Sediment / Hard-Rock Well Share 19.5%
Territory Under 1 km Sediment Cover 32.3%
Lithostatic Pressure at 5 km Depth 132.7 MPa
Moho Crustal Discontinuity Depth 35 km
Thermal Lithosphere Thickness 103.1 km
Curie Temperature Isotherm Depth 29.5 km
Model Temperature Spread Uncertainty (200°C) ±1 km

Transmission Grid & Demand Colocation

Infrastructure interconnectivity and urban power demand proximity

High-Voltage Transmission Network Length 27 056 km
Land Area Within 25 km of Grid 71.6%
Land Area Within 50 km of Grid 89.8%
Land Area Within 100 km of Grid 96.9%
Average Proximity to Nearest Substation / Line 15.7 km
Urban Centers (>10,000 Population) 112
Total Urban Population 13.4 M
Prospective Resource Colocated Near Demand (>1M Pop) 34.2%

Target Sensitivity & Deep EGS Upside

Sensitivity of prospective resource area to adjusted depth and temperature thresholds

150°C Baseline at 5.5 km 12.8% of national territory reaches 150°C at 5.5 km depth
185°C Baseline at 7.5 km 14.4% of national territory reaches 185°C at 7.5 km depth

Global Peer Benchmarking (vs. 278 Assessed Jurisdictions)

Relative ranking distribution of Paraguay across 11 standardized geothermal indicators

Paraguay Rank Global Peer Spread
Shallowest 200°C depth
5.9 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 30th percentile
Peak temp at 5 km
181.7 °C Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 33th percentile
Prospective land area (>185°C at 5.5 km)
8% Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 13th percentile
Stored heat in-place (3-7 km)
65.3 ZJ Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 57th percentile
Typical geothermal gradient
34.4 °C/km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 49th percentile
Grid proximity (<50 km)
89.8% Top 10%
P0 (Lowest) P50 (Median) P100 (Highest) • 90th percentile
Thin sediment coverage (<1 km)
32.3% Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 32th percentile
Curie isotherm depth
29.5 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 35th percentile
Moho crustal thickness
35 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 37th percentile
Model temperature uncertainty spread
±1.5 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 58th percentile
Urban demand colocation
69.6% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 66th percentile
Asset-Level 3D Simulation Available

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Analytical Geothermal Assessment & Discussion: Paraguay

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

Resource Overview

Geothermal assessment for Paraguay indicates sedimentary_rift geological controls governing subsurface heat transport, yielding 8% of land area reaching the baseline target of 185°C at 5.5 km depth.

Uncertainty & Model Variance

Thermal inversion across Paraguay shows consistent model convergence with constrained standard deviations across deep crustal layers.

Grid & Infrastructure Colocation

National electrical transmission coverage positions approximately 89.8% of prospective geothermal ground within 50 km of existing high-voltage corridors.

Geological & Basement Setting

Subsurface lithology is characterized by sedimentary rift dynamics with median sediment thickness of 3.4 km and crustal thickness of 35 km.

Stored Heat Volume

Accessible thermal energy in place between 3 km and 7 km depth above 80°C totals 65.3 Zettajoules (ZJ).

Peer Comparison

Benchmarked against 237 global assessment jurisdictions, Paraguay 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 Paraguay is generated from Geothermal Radar Data Pack 2026.1 utilizing global 0.1° hex-grid thermal inversion across 4 519 model cells (land area: 406 752 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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