NI South America Updated 2026-08-20

Nicaragua Geothermal Screening

Geothermal screening assessment identifies 46.2% prospective land reaching 185°C by 5.5 km depth in Nicaragua.

Key Geothermal Metrics

Land Reaching 185°C by 5.5 km High Potential
46.2%

Primary baseline screening criterion

Shallowest Depth to 200°C Very Shallow
1.9 km

Minimum drill depth for high enthalpy

Peak Temperature at 5 km Depth Superhot
298.4 °C

Maximum modeled temperature

Typical Geothermal Gradient Volcanic / Rift
50.6 °C/km

Average to 5 km depth (15°C surface)

Grid Connectable Prospective Area High Accessibility
85.8%

Hot territory within 50 km transmission

Stored Heat In-Place (3–7 km) 1 ZJ = 10²¹ Joules
67.8 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 15% 32.1% 60.4% 69.2% 99% 100%
175°C 15.1% 33.2% 49% 66.8% 90.9% 94.9%
200°C 10.1% 29.5% 42.5% 60.4% 79.6% 96.8%
225°C 10.6% 23% 33% 48.4% 64.4% 79.6%
250°C 7.8% 14.8% 28.9% 38.7% 44.4% 57.9%

4-Stage Geothermal Resource & Infrastructure Funnel

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

1 Whole country
130 373 km² 100%
2 Reaches 185°C by 5.5 km
60 232 km² 46.2%
3 ...and within 50 km transmission
51 679 km² 39.6%
4 ...and within 100 km town
46 251 km² 37.2%

Geological Setting & Subsurface Parameters

Lithology, basement thickness, stress and thermal boundary constraints

Median Depth to 200°C Isotherm 5 km
Best 10th Percentile Depth to 200°C 2.6 km
Median Temperature at 5 km Depth 196.7 °C
Best 10th Percentile Temp at 5 km 256 °C
Median Sediment Thickness 0.8 km
Sediment / Hard-Rock Well Share 21.9%
Territory Under 1 km Sediment Cover 90.1%
Lithostatic Pressure at 5 km Depth 138 MPa
Moho Crustal Discontinuity Depth 33.2 km
Thermal Lithosphere Thickness 87.4 km
Curie Temperature Isotherm Depth 14.1 km
Model Temperature Spread Uncertainty (200°C) ±1.1 km

Transmission Grid & Demand Colocation

Infrastructure interconnectivity and urban power demand proximity

High-Voltage Transmission Network Length 7 038 km
Land Area Within 25 km of Grid 72.3%
Land Area Within 50 km of Grid 85.8%
Land Area Within 100 km of Grid 94.7%
Average Proximity to Nearest Substation / Line 16.4 km
Urban Centers (>10,000 Population) 120
Total Urban Population 9 M
Prospective Resource Colocated Near Demand (>1M Pop) 59.5%

Target Sensitivity & Deep EGS Upside

Sensitivity of prospective resource area to adjusted depth and temperature thresholds

150°C Baseline at 5.5 km 73.9% of national territory reaches 150°C at 5.5 km depth
185°C Baseline at 7.5 km 83.2% of national territory reaches 185°C at 7.5 km depth

Global Peer Benchmarking (vs. 278 Assessed Jurisdictions)

Relative ranking distribution of Nicaragua across 11 standardized geothermal indicators

Nicaragua Rank Global Peer Spread
Shallowest 200°C depth
1.9 km Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 87th percentile
Peak temp at 5 km
298.4 °C Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 79th percentile
Prospective land area (>185°C at 5.5 km)
46.2% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 77th percentile
Stored heat in-place (3-7 km)
67.8 ZJ Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 57th percentile
Typical geothermal gradient
50.6 °C/km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 72th percentile
Grid proximity (<50 km)
85.8% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 86th percentile
Thin sediment coverage (<1 km)
90.1% Top 10%
P0 (Lowest) P50 (Median) P100 (Highest) • 90th percentile
Curie isotherm depth
14.1 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 69th percentile
Moho crustal thickness
33.2 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 40th percentile
Model temperature uncertainty spread
±0.8 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 73th percentile
Urban demand colocation
36.7% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 74th percentile
Asset-Level 3D Simulation Available

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Analytical Geothermal Assessment & Discussion: Nicaragua

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

Resource Overview

Geothermal assessment for Nicaragua indicates volcanic_arc geological controls governing subsurface heat transport, yielding 46.2% of land area reaching the baseline target of 185°C at 5.5 km depth.

Uncertainty & Model Variance

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

Grid & Infrastructure Colocation

National electrical transmission coverage positions approximately 85.8% 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 0.8 km and crustal thickness of 33.2 km.

Stored Heat Volume

Accessible thermal energy in place between 3 km and 7 km depth above 80°C totals 67.8 Zettajoules (ZJ).

Peer Comparison

Benchmarked against 237 global assessment jurisdictions, Nicaragua 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 Nicaragua is generated from Geothermal Radar Data Pack 2026.1 utilizing global 0.1° hex-grid thermal inversion across 1 449 model cells (land area: 130 373 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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