{
  "schema_version": "1.0",
  "build": "NP176-FINAL-frozen",
  "generated_on": "2026-09-22",
  "criterion_02_contract": {
    "required_fields": [
      "numerator_stage",
      "denominator_stage",
      "cost_composition",
      "period",
      "territory",
      "status_source"
    ],
    "pass_rule": "Every displayed numerical EROI group maps to a visible table row and a machine-readable passport with all required fields non-empty."
  },
  "passports": [
    {
      "id": "M01",
      "scope": "teaching scale 100 to 5, including ticks, selected value and derived cost/net percentages",
      "numerator_stage": "gross energy output at one conditional stage",
      "denominator_stage": "energy invested at the same conditional stage",
      "cost_composition": "all energy investments inside the declared conditional boundary; no empirical inventory",
      "period": "one conditional calculation year",
      "territory": "one conditional system",
      "status_source": "teaching condition, not an observation"
    },
    {
      "id": "D25",
      "scope": "50 annual primary-stage values, 1971-2020",
      "numerator_stage": "primary energy produced by fossil-fuel industries",
      "denominator_stage": "primary energy of direct and indirect investments",
      "cost_composition": "direct and indirect annual energy requirements included; capital energy excluded",
      "period": "1971-2020 annual, no interpolation",
      "territory": "world (WRLD), All fossil fuels",
      "status_source": "published model estimates; Aramendia et al. 2024; released Figshare dataset"
    },
    {
      "id": "D01",
      "scope": "50 annual final-stage values, 1971-2020",
      "numerator_stage": "final energy delivered to consumers",
      "denominator_stage": "final energy invested in fossil-fuel industries",
      "cost_composition": "direct and indirect annual energy requirements included; capital energy excluded",
      "period": "1971-2020 annual, no interpolation",
      "territory": "world (WRLD), All fossil fuels, fuel+elec+heat",
      "status_source": "published model estimates; Aramendia et al. 2024; released Figshare dataset"
    },
    {
      "id": "D02",
      "scope": "50 annual useful-stage values, 1971-2020",
      "numerator_stage": "useful energy after end-use conversion",
      "denominator_stage": "final energy invested in fossil-fuel industries",
      "cost_composition": "direct and indirect annual energy requirements included; capital energy excluded",
      "period": "1971-2020 annual, no interpolation",
      "territory": "world (WRLD), All fossil fuels, fuel+elec+heat",
      "status_source": "published model estimates; Aramendia et al. 2024; released Figshare dataset"
    },
    {
      "id": "D22",
      "scope": "18 displayed five-year pathway nodes and all interface interpolations",
      "numerator_stage": "net electricity delivered to end users at final consumption point F after transmission and distribution losses",
      "denominator_stage": "systemwide energy investment under LUT-EROI converted to electricity quality",
      "cost_composition": "resource extraction/processing; construction and decommissioning materials/consumables; transport; operational consumables; storage technologies; material/waste recycling and embodied energy of grid expansion excluded",
      "period": "model 2015-2050; displayed 2025-2050 at five-year nodes; interface uses disclosed piecewise-linear interpolation",
      "territory": "world aggregate of nine major regions",
      "status_source": "approximate digitisation of Sahin et al. 2024 Figure 2a-b to 0.1; not probability or whole-energy EROI"
    },
    {
      "id": "D26",
      "scope": "six technology inputs: coal 13, gas 3, hydro 38, nuclear 25, solar PV 4, onshore wind 19",
      "numerator_stage": "gross electrical energy produced by a generating facility over its lifetime",
      "denominator_stage": "primary-thermal-equivalent energy invested to fabricate, construct, operate and decommission over the lifetime",
      "cost_composition": "fabrication, construction, operation and decommissioning; fuel mining/processing/delivery for coal, gas and nuclear without fuel energy content; embodied grid integration/storage/transmission energy excluded for solar and wind",
      "period": "published 2016 parameter table; assumed technology lifetimes 25-70 years; not a time series",
      "territory": "generic technology inputs in a global dynamic model",
      "status_source": "Neumeyer and Goldston 2016 Table 1; published model inputs, not universal modern estimates"
    },
    {
      "id": "M05",
      "scope": "teaching aggregation 10 and 20 to about 13.33",
      "numerator_stage": "gross outputs 100 plus 100 at one conditional stage",
      "denominator_stage": "investments 10 plus 5 at the same stage",
      "cost_composition": "all stipulated investments of two independent sources; no internal transfers",
      "period": "one shared conditional period",
      "territory": "conditional sources A and B",
      "status_source": "teaching aggregation 200/15"
    },
    {
      "id": "D28",
      "scope": "four whole-energy pathways, annual 2020-2100 median/lower/upper values and interface interpolation",
      "numerator_stage": "total final energy delivered to the point of use across electricity, gases, liquid fuels and solids",
      "denominator_stage": "energy used by the energy system from extraction through processing, conversion and delivery, including construction, operation, maintenance and decommissioning",
      "cost_composition": "direct on-site and indirect upstream energy for extraction, processing, conversion, transport, construction, operation, maintenance and decommissioning across 27 conversion technologies",
      "period": "published model 2020-2100; annual author-supplied tables",
      "territory": "world",
      "status_source": "published scenario-model outputs for four illustrative 1.5°C-compatible pathways; not observations, probabilities or an unconditional forecast",
      "carriers": [
        "electricity",
        "gases",
        "liquid fuels",
        "solids"
      ]
    }
  ],
  "coverage": [
    {
      "file": "index.html",
      "selector": "#explore",
      "passport_ids": [
        "M01"
      ]
    },
    {
      "file": "index.html",
      "selector": ".pathway-coupler",
      "passport_ids": [
        "D28"
      ]
    },
    {
      "file": "index.html",
      "selector": "#eroi-history",
      "passport_ids": [
        "D25",
        "D01",
        "D02"
      ]
    },
    {
      "file": "index.html",
      "selector": "#technology-comparison",
      "passport_ids": [
        "D26"
      ]
    },
    {
      "file": "timeline.html",
      "selector": "#model",
      "passport_ids": [
        "D28"
      ]
    },
    {
      "file": "system.html",
      "selector": "#scenario",
      "passport_ids": [
        "D28"
      ]
    },
    {
      "file": "evidence.html",
      "selector": "#data",
      "passport_ids": [
        "M01",
        "D25",
        "D01",
        "D02",
        "D22",
        "D26",
        "M05",
        "D28"
      ]
    },
    {
      "file": "power-timeline.html",
      "selector": "#model",
      "passport_ids": [
        "D22"
      ]
    }
  ],
  "non_eroi_numeric_labels": [
    {
      "label": "17,6 МэВ",
      "meaning": "energy released by one D+T fusion reaction and project name; it is not an EROI estimate",
      "evidence": "D07"
    }
  ]
}