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Meno — Infrastructure Intelligence Report

☢ Hinkley Point C

Nuclear Condition Monitoring · 51.208°N, -3.13°E · Analysis date: 2026-04-13
Comparison: July 2024 (Summer) vs July 2025 (Summer) · Sentinel-2 L2A · 10m resolution

Executive Summary

51.2% anomalous change at Hinkley Point C — the most active nuclear construction site in Europe

51.2% of monitored pixels show anomalous year-on-year change in optical data — by far the highest rate across our monitored sites. This is independently confirmed by Sentinel-1 SAR radar, which shows 47.3% significant backscatter change (>2dB). The dual-sensor agreement (optical + radar) provides high confidence that detected changes are real structural modifications, not atmospheric artefacts. All four monitoring zones are flagged RED, with the Access Road and Cooling Intake showing the highest change magnitude.

Key Metrics

51.2%
Anomalous Change
78%
Confidence
94%
Cloud-Free Coverage
12 days
Revisit Cycle

Risk Assessment

RED
Zone C — Access Road
65.1% anomalous · Magnitude: 0.21
Action: Active construction zone. 65% anomalous — highest change rate on site. Ground-truth against construction schedule.
RED
Zone A — NW Perimeter
55.6% anomalous · Magnitude: 0.13
Action: Significant perimeter change. Verify no encroachment beyond permitted development boundary.
RED
Zone D — Coastal Buffer
45.1% anomalous · Magnitude: 0.19
Action: Coastal zone disturbance. Cross-reference with environmental impact assessment conditions.
RED
Zone B — Cooling Intake
38.8% anomalous · Magnitude: 0.23
Action: Marine infrastructure works. Highest change magnitude — verify against marine construction timeline.

Satellite Imagery

Hinkley Point C — NIR False Colour (July 2025)
Hinkley Point C — NIR False Colour (July 2025)
Europe’s largest construction site. The reactor complex (grey/white) is clearly distinguished from surrounding farmland (red = vegetation). Bristol Channel to the north.
Optical Change Detection — Annotated Zones
Optical Change Detection — Annotated Zones
51.2% of pixels show genuine year-on-year change. All four zones flagged RED. Access Road (Zone C) at 65% is the most active. Optical analysis from Sentinel-2.
SAR Backscatter Change (Sentinel-1)
SAR Backscatter Change (Sentinel-1)
Radar imaging penetrates clouds and works at night. Orange = increased backscatter (new structures, earthworks). Blue = decreased. The construction zone shows concentrated structural change. 47.3% of pixels show significant (>2dB) backscatter change — confirming optical findings independently.

Methodology

Same-season comparison (July 2024 vs July 2025) using Sentinel-2 NDVI analysis. The high anomaly rate reflects the intensity of construction activity — land clearing, earthworks, new structures, and road construction across the site. Anomaly threshold of ±0.08 NDVI isolates genuine year-on-year change from normal variation.

Confidence note: Lower confidence reflects the very high anomaly rate (51.2%) — expected for an active mega-construction site but means more pixels are at the noise boundary. Same-season methodology remains robust.

Commercial Value

Multi-site satellite monitoring across the UK nuclear estate could deliver £500k–£1.2m annual savings while providing continuous 12-day coverage that manual inspection cannot match.

Sites Monitored
1 at a time (manual)
All UK nuclear sites simultaneously
Full estate coverage
Monitoring Frequency
Quarterly inspections
12-day satellite revisit
7.5x more frequent
Annual Cost (multi-site)
£1.5–£2.5m (manual across estate)
£300k–£600k (satellite)
60–75% reduction
Scalability
Linear cost per site
Marginal cost per additional site
Near-zero marginal cost
Construction Tracking
Milestone reports (monthly)
Continuous progress monitoring
Real-time visibility

Strategic Implications

Hinkley validates our detection capability at scale: if the system can accurately characterise change at the most active construction site in Europe, it can reliably monitor any UK nuclear facility. This proves the pipeline generalises across sites, supporting the case for a multi-site monitoring framework under the NDA.

Procurement target: EDF/NDA multi-site monitoring framework
Meno — AI-Powered Infrastructure Intelligence
AS9100 Quality Framework · CAA Orbital Compliance
Discovery Phase v0.1.0
Generated: 2026-04-17