{
  "id": "ng.grid.national.location.2020",
  "category": "grid_electricity",
  "subcategory": "national_grid",
  "description": "Nigeria national grid location-based Scope 2 emission factor derived from 2020 Energy Databank plant generation records and IPCC 2006 default stationary-combustion factors. Represents NEFDB Phase 1.",
  "value": 0.5717,
  "unit": "kgCO2e_per_kWh",
  "gas": null,
  "gwp_basis": "AR6",
  "scope": 2,
  "data_year": 2020,
  "published_year": 2026,
  "country": "NG",
  "source": {
    "id": "ENERGY_DATABANK_GENERATION",
    "title": "Nigerian Energy Data Bank — Power Plant Generation Statistics",
    "publisher": "Federal Ministry of Energy / Energy Data Bank",
    "year": 2024,
    "access_date": "2026-06-19"
  },
  "additional_sources": [
    {
      "id": "IPCC_2006_VOL2_CH2",
      "title": "IPCC 2006 Guidelines Vol 2 Ch 2 Stationary Combustion",
      "publisher": "IPCC",
      "year": 2006,
      "access_date": "2026-06-19",
      "page": "Table 2.2 (p. 2.16 / PDF p. 16); Table 1.2 (p. 1.18 / PDF p. 18)"
    },
    {
      "id": "NERC_2024_ANNUAL",
      "title": "NERC 2024 Annual Report",
      "publisher": "NERC",
      "year": 2024,
      "access_date": "2026-06-19"
    }
  ],
  "uncertainty_pct": 30.0,
  "confidence": "low",
  "methodology_note": "Derived from generation-by-fuel data for 2020 (gas 7,281.71 GWh, hydro 75.59 GWh; all other fuels zero). Fuel input energy = generation × 3.6 TJ/GWh / thermal efficiency (35 % assumed for gas). Emissions = fuel input × IPCC Table 2.2 CO2/CH4/N2O factors; CH4 and N2O converted using AR6 GWP (28 and 265). Hydro/solar/wind are zero-emission. The dataset under-represents national hydro because Kainji/Jebba/Shiroro 2020 records use non-MWh units and are excluded.",
  "nefdb_version": "phase1"
}