SE Europe Updated 2026-08-20

Sweden Geothermal Screening

Geothermal screening assessment identifies 1.2% prospective land reaching 185°C by 5.5 km depth in Sweden.

Key Geothermal Metrics

Land Reaching 185°C by 5.5 km Low Prospect
1.2%

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
155.9 °C

Maximum modeled temperature

Typical Geothermal Gradient Continental Normal
20.8 °C/km

Average to 5 km depth (15°C surface)

Grid Connectable Prospective Area High Accessibility
80.2%

Hot territory within 50 km transmission

Stored Heat In-Place (3–7 km) 1 ZJ = 10²¹ Joules
60.8 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 0.1% 0.3% 0.4% 0.5% 0.7% 0.9%
175°C 0.1% 0.1% 0.2% 0.3% 0.4% 0.5%
200°C 0.1% 0.1% 0.1%
225°C
250°C

4-Stage Geothermal Resource & Infrastructure Funnel

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

1 Whole country
450 295 km² 100%
2 Reaches 185°C by 5.5 km
5 404 km² 1.2%
3 ...and within 50 km transmission
4 334 km² 1%
4 ...and within 100 km town
3 860 km² 0.9%

Geological Setting & Subsurface Parameters

Lithology, basement thickness, stress and thermal boundary constraints

Median Depth to 200°C Isotherm 8.5 km
Best 10th Percentile Depth to 200°C 7 km
Median Temperature at 5 km Depth 102.5 °C
Best 10th Percentile Temp at 5 km 137.4 °C
Median Sediment Thickness 0.7 km
Sediment / Hard-Rock Well Share 22.9%
Territory Under 1 km Sediment Cover 79.4%
Lithostatic Pressure at 5 km Depth 137.6 MPa
Moho Crustal Discontinuity Depth 39.6 km
Thermal Lithosphere Thickness 88.3 km
Curie Temperature Isotherm Depth 41 km
Model Temperature Spread Uncertainty (200°C) ±1.5 km

Transmission Grid & Demand Colocation

Infrastructure interconnectivity and urban power demand proximity

High-Voltage Transmission Network Length 20 695 km
Land Area Within 25 km of Grid 69.8%
Land Area Within 50 km of Grid 80.2%
Land Area Within 100 km of Grid 87.7%
Average Proximity to Nearest Substation / Line 34.4 km
Urban Centers (>10,000 Population) 189
Total Urban Population 30.7 M
Prospective Resource Colocated Near Demand (>1M Pop) 52.9%

Target Sensitivity & Deep EGS Upside

Sensitivity of prospective resource area to adjusted depth and temperature thresholds

150°C Baseline at 5.5 km 1.9% of national territory reaches 150°C at 5.5 km depth
185°C Baseline at 7.5 km 2.2% of national territory reaches 185°C at 7.5 km depth

Global Peer Benchmarking (vs. 278 Assessed Jurisdictions)

Relative ranking distribution of Sweden across 11 standardized geothermal indicators

Sweden 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
155.9 °C Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 22th percentile
Prospective land area (>185°C at 5.5 km)
1.2% Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 5th percentile
Stored heat in-place (3-7 km)
60.8 ZJ Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 56th percentile
Typical geothermal gradient
20.8 °C/km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 30th percentile
Grid proximity (<50 km)
80.2% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 80th percentile
Thin sediment coverage (<1 km)
79.4% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 79th percentile
Curie isotherm depth
41 km Lower 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 10th percentile
Moho crustal thickness
39.6 km Lower 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 29th percentile
Model temperature uncertainty spread
±1.2 km Middle 50%
P0 (Lowest) P50 (Median) P100 (Highest) • 51th percentile
Urban demand colocation
76.4% Top 25%
P0 (Lowest) P50 (Median) P100 (Highest) • 70th percentile
Asset-Level 3D Simulation Available

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Analytical Geothermal Assessment & Discussion: Sweden

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

Resource Overview

Geothermal assessment for Sweden indicates craton_shield geological controls governing subsurface heat transport, yielding 1.2% of land area reaching the baseline target of 185°C at 5.5 km depth.

Uncertainty & Model Variance

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

Grid & Infrastructure Colocation

National electrical transmission coverage positions approximately 80.2% of prospective geothermal ground within 50 km of existing high-voltage corridors.

Geological & Basement Setting

Subsurface lithology is characterized by craton shield dynamics with median sediment thickness of 0.7 km and crustal thickness of 39.6 km.

Stored Heat Volume

Accessible thermal energy in place between 3 km and 7 km depth above 80°C totals 60.8 Zettajoules (ZJ).

Peer Comparison

Benchmarked against 237 global assessment jurisdictions, Sweden 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 Sweden is generated from Geothermal Radar Data Pack 2026.1 utilizing global 0.1° hex-grid thermal inversion across 5 003 model cells (land area: 450 295 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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