Portfolio emissions, EU ETS exposure, efficiency & asset-risk intelligence
Across 2 tails tracked over the period, the portfolio emitted 6,016 t CO₂ over 631 movements. 25% of that tonnage (1,476 t) falls within EU ETS scope — an indicative liability of €103,375 at the €70/t allowance price.
On efficiency, the fleet runs 3% below the active-peer type median on average.
1 risk flag is open across 1 tail — the headline item being N652WE: idle pattern worth watching.
The portfolio emitted 6,016 t CO₂, of which 1,476 t falls on EU ETS-touching legs — an indicative liability of €103,375 at the €70/t allowance price.
| Registration | Total CO₂ (t) | EU ETS CO₂ (t) | ETS Share | Est. Liability |
|---|---|---|---|---|
| N555GA | 3,561 | 677 | 19% | €47,418 |
| N652WE | 2,455 | 799 | 33% | €55,957 |
| Portfolio | 6,016 | 1,476 | 25% | €103,375 |
EU ETS liability is indicative — ETS-touching tonnage × €70/t allowance price. Provided for information only.
CO₂/NM vs the active-peer median for each tail's type — sorted by deviation.
| Tail | CO₂/NM | Type median | Δ vs median |
|---|---|---|---|
N652WE Gulfstream G650 | 23.5 | 24.0 | -2% |
N555GA Gulfstream G650 | 22.9 | 24.0 | -5% |
N652WE shows a longest ground period of 61 days, above the 30-day physical-condition threshold.
| Registration | Type | Flights | Status | Total CO₂ (t) | ETS CO₂ (t) | CO₂/NM | Eff. Δ | Risk tier |
|---|---|---|---|---|---|---|---|---|
| N555GA | Gulfstream G650 | 363 | Active | 3,561 | 677 | 22.9 | −5% | Low Risk |
| N652WE | Gulfstream G650 | 268 | Active | 2,455 | 799 | 23.5 | −2% | Moderate Risk |
CO₂ estimates are derived from ADS-B flight data using aircraft-specific fuel-burn factors aligned with EUROCONTROL EMEP/EEA 2023 guidance. Distance figures are taken from flight-trace data (nautical miles). Efficiency percentiles and type medians are computed within the ACTIVE type-fleet population — peers with a minimum flight threshold in the benchmark window, not the full registered fleet, since dormant tails would drag volume medians to the floor. EU ETS coverage follows Directive 2003/87/EC as amended (intra-EEA flights and UK ETS post-2021); the indicative liability applies a €70/t allowance price to ETS-touching tonnage only.
This report is based on ADS-B flight data. Carbon Sky Index does not track ownership or registry information; flight records may be incomplete where ADS-B coverage is limited. EU ETS figures are indicative estimates, not a settled liability. Provided for informational purposes only — it does not constitute financial, legal or regulatory advice.