{
  "id": "ng.grid.national.location.2024",
  "category": "grid_electricity",
  "subcategory": "national_grid",
  "description": "Nigeria national grid location-based Scope 2 emission factor for 2024, derived from the NEFDB reconciled generation mix and IPCC 2006 default stationary-combustion emission factors.",
  "value": 0.138611,
  "unit": "kgCO2e_per_kWh",
  "gas": {
    "CO2": 0.138477,
    "CH4": 0.000069,
    "N2O": 0.000065
  },
  "gwp_basis": "AR5",
  "scope": 2,
  "data_year": 2024,
  "published_year": 2026,
  "country": "NG",
  "source": {
    "id": "NEFDB_RECONCILED_GENERATION_2024",
    "title": "Nigeria Generation Mix Reconciled 2024",
    "publisher": "NEFDB",
    "year": 2024,
    "url": "datasets/grid_electricity/derived/nigeria_generation_mix_reconciled.csv"
  },
  "additional_sources": [
    {
      "id": "IPCC_2006_VOL2_CH2",
      "title": "IPCC 2006 Guidelines Vol 2 Ch 2 Stationary Combustion",
      "publisher": "IPCC",
      "year": 2006,
      "page": "Table 2.2 (energy industries); Natural Gas CO2 56,100, CH4 1, N2O 0.1 kg/TJ; Residual Fuel Oil CO2 77,400, CH4 3, N2O 0.6 kg/TJ"
    },
    {
      "id": "GUARDIAN_NERC_2024",
      "title": "Guardian Nigeria summary of NERC 2024 annual statistics",
      "publisher": "Guardian Nigeria / NERC",
      "year": 2024
    },
    {
      "id": "EMBER_OWID_2024",
      "title": "Ember Yearly Electricity Data / Our World in Data energy dataset",
      "publisher": "Ember / OWID",
      "year": 2024
    }
  ],
  "confidence": "medium",
  "methodology_note": "Calculated as a generation-weighted average: EF = (gas_generation_gwh * gas_ef_kgco2e_per_kwh + oil_generation_gwh * oil_ef_kgco2e_per_kwh) / total_generation_gwh. Gas EF = 0.202156 kgCO2e/kWh from IPCC Table 2.2 natural-gas defaults (CO2 56,100 + CH4 1*28 + N2O 0.1*265 kgCO2e/TJ, AR5 GWP) at 3.6 MJ/kWh. Oil EF = 0.279515 kgCO2e/kWh from IPCC Table 2.2 residual fuel oil defaults (CO2 77,400 + CH4 3*28 + N2O 0.6*265 kgCO2e/TJ). Hydro, solar, wind, biomass and other generation are treated as zero-emission. 2024 oil generation is zero, so the factor is driven entirely by gas-fired generation.",
  "nefdb_version": "1.0.0"
}