DZ Africa Updated 2026-08-20

Algeria Geothermal Screening

Geothermal screening assessment identifies 8.4% prospective land reaching 185°C by 5.5 km depth in Algeria.

Key Geothermal Metrics

Land Reaching 185°C by 5.5 km Low Prospect
8.4%

Primary baseline screening criterion

Shallowest Depth to 200°C Deep Target
4.8 km

Minimum drill depth for high enthalpy

Peak Temperature at 5 km Depth Direct Heat
181.6 °C

Maximum modeled temperature

Typical Geothermal Gradient Continental Normal
29.9 °C/km

Average to 5 km depth (15°C surface)

Grid Connectable Prospective Area High Accessibility
85.1%

Hot territory within 50 km transmission

Stored Heat In-Place (3–7 km) 1 ZJ = 10²¹ Joules
430.7 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 1.4% 2.9% 4.4% 5.1% 7.8% 9.7%
175°C 0.8% 2.1% 2.6% 3.6% 4.7% 6.2%
200°C 0.4% 0.9% 1.6% 2.4% 3.2% 3.6%
225°C 0.1% 0.2% 0.3% 0.5% 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
2 381 741 km² 100%
2 Reaches 185°C by 5.5 km
200 066 km² 8.4%
3 ...and within 50 km transmission
170 256 km² 7.1%
4 ...and within 100 km town
139 868 km² 6.7%

Geological Setting & Subsurface Parameters

Lithology, basement thickness, stress and thermal boundary constraints

Median Depth to 200°C Isotherm 6.8 km
Best 10th Percentile Depth to 200°C 5.9 km
Median Temperature at 5 km Depth 142.2 °C
Best 10th Percentile Temp at 5 km 163.2 °C
Median Sediment Thickness 2.8 km
Sediment / Hard-Rock Well Share 26.1%
Territory Under 1 km Sediment Cover 21.3%
Lithostatic Pressure at 5 km Depth 131.2 MPa
Moho Crustal Discontinuity Depth 31.5 km
Thermal Lithosphere Thickness 76.8 km
Curie Temperature Isotherm Depth 24.3 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 30 941 km
Land Area Within 25 km of Grid 68.2%
Land Area Within 50 km of Grid 85.1%
Land Area Within 100 km of Grid 97.3%
Average Proximity to Nearest Substation / Line 24.4 km
Urban Centers (>10,000 Population) 212
Total Urban Population 25.6 M
Prospective Resource Colocated Near Demand (>1M Pop) 29.1%

Target Sensitivity & Deep EGS Upside

Sensitivity of prospective resource area to adjusted depth and temperature thresholds

150°C Baseline at 5.5 km 13.4% of national territory reaches 150°C at 5.5 km depth
185°C Baseline at 7.5 km 15.1% of national territory reaches 185°C at 7.5 km depth

Global Peer Benchmarking (vs. 278 Assessed Jurisdictions)

Relative ranking distribution of Algeria across 11 standardized geothermal indicators

Algeria Rank Global Peer Spread
Shallowest 200°C depth
4.8 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 46th percentile
Peak temp at 5 km
181.6 °C Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 33th percentile
Prospective land area (>185°C at 5.5 km)
8.4% Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 14th percentile
Stored heat in-place (3-7 km)
430.7 ZJ Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 82th percentile
Typical geothermal gradient
29.9 °C/km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 43th percentile
Grid proximity (<50 km)
85.1% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 85th percentile
Thin sediment coverage (<1 km)
21.3% Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 21th percentile
Curie isotherm depth
24.3 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 47th percentile
Moho crustal thickness
31.5 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 43th percentile
Model temperature uncertainty spread
±1.6 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 53th percentile
Urban demand colocation
32.7% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 89th percentile
Asset-Level 3D Simulation Available

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Analytical Geothermal Assessment & Discussion: Algeria

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

Resource Overview

Geothermal assessment for Algeria indicates sedimentary_rift geological controls governing subsurface heat transport, yielding 8.4% of land area reaching the baseline target of 185°C at 5.5 km depth.

Uncertainty & Model Variance

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

Grid & Infrastructure Colocation

National electrical transmission coverage positions approximately 85.1% 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 2.8 km and crustal thickness of 31.5 km.

Stored Heat Volume

Accessible thermal energy in place between 3 km and 7 km depth above 80°C totals 430.7 Zettajoules (ZJ).

Peer Comparison

Benchmarked against 237 global assessment jurisdictions, Algeria 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 Algeria is generated from Geothermal Radar Data Pack 2026.1 utilizing global 0.1° hex-grid thermal inversion across 26 464 model cells (land area: 2 381 741 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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