meta:
  currency: THB_2026
  notes:
    - "All values are public-data based or explicitly marked estimates."
    - "Replace estimates when MODEL_SPEC.md finalizes parameter standards."

macroeconomic:
  fx_thb_per_usd:
    value: 35.0
    unit: "THB/USD"
    estimate: true
    source: "Bank of Thailand daily rates (to be pinned in future update)."
  real_discount_rate:
    value: 0.06
    unit: "fraction"
    estimate: true
    source: "Generic screening WACC for first-cut energy options."

tariffs:
  tou_peak_energy_charge:
    value: 5.1135
    unit: "THB/kWh"
    estimate: false
    source: "PEA Electricity Tariffs (May 2023), schedule TOU 22-33kV."
  tou_offpeak_energy_charge:
    value: 2.6037
    unit: "THB/kWh"
    estimate: false
    source: "PEA Electricity Tariffs (May 2023), schedule TOU 22-33kV."

fuel_scenarios:
  lng_usd_per_mmbtu:
    low:
      value: 8.0
      source: "Low scenario around post-2020 non-crisis spot periods; estimate."
      estimate: true
    base:
      value: 14.0
      source: "Mid-range scenario between pre-crisis and stressed periods; estimate."
      estimate: true
    high:
      value: 22.0
      source: "Aligned with crisis-level values cited in IEEFA source chapter."
      estimate: false
  ccgt_heat_rate_mmbtu_per_mwh:
    value: 6.8
    unit: "MMBtu/MWh"
    estimate: true
    source: "Typical efficient CCGT heat-rate benchmark."
  gas_variable_om_thb_per_mwh:
    value: 140
    unit: "THB/MWh"
    estimate: true
    source: "First-cut O&M placeholder for model comparison."

loss_model:
  gas_energy_content_mmbtu_per_mmscf:
    value: 1037.0
    unit: "MMBtu/MMSCF"
    estimate: false
    source: "Standard natural-gas gross heating value convention."

cost_curve_options:
  aircon_retrofit_controls:
    label: "Aircon retrofit + controls"
    capex_thb_per_kw: 12000
    fixed_om_fraction_of_capex: 0.02
    lifetime_years: 12
    annual_energy_delta_kwh_per_kw: -2200
    evening_peak_delta_kw_per_kw: -0.85
    estimate: true
    source: "Screening value based on Thai commercial-building efficiency studies and ESCO ranges."

  building_ems:
    label: "Building EMS optimization"
    capex_thb_per_kw: 6500
    fixed_om_fraction_of_capex: 0.03
    lifetime_years: 10
    annual_energy_delta_kwh_per_kw: -1200
    evening_peak_delta_kw_per_kw: -0.55
    estimate: true
    source: "Screening value; replace with project bids."

  rooftop_solar_self_use:
    label: "Rooftop solar self-use"
    capex_thb_per_kw: 32760
    fixed_om_fraction_of_capex: 0.015
    lifetime_years: 25
    annual_energy_delta_kwh_per_kw: -1450
    evening_peak_delta_kw_per_kw: -0.08
    estimate: true
    source: "IEEFA rooftop CAPEX ~USD936/kW converted at 35 THB/USD; evening peak effect small."

  bess_shift:
    label: "Battery storage (4h) for peak shift"
    capex_thb_per_kw: 42000
    fixed_om_fraction_of_capex: 0.02
    lifetime_years: 15
    annual_energy_delta_kwh_per_kw: 0
    evening_peak_delta_kw_per_kw: -0.9
    roundtrip_efficiency: 0.88
    estimate: true
    source: "Indicative 2026 utility/commercial BESS screening cost."

  tou_demand_response:
    label: "TOU + automated demand response"
    capex_thb_per_kw: 4200
    fixed_om_fraction_of_capex: 0.04
    lifetime_years: 8
    annual_energy_delta_kwh_per_kw: -350
    evening_peak_delta_kw_per_kw: -0.65
    estimate: true
    source: "Pilot-scale DR aggregator program benchmark."

  distribution_loss_reduction:
    label: "Distribution loss reduction"
    capex_thb_per_kw: 28000
    fixed_om_fraction_of_capex: 0.02
    lifetime_years: 20
    annual_energy_delta_kwh_per_kw: -900
    evening_peak_delta_kw_per_kw: -0.2
    estimate: true
    source: "Distribution reinforcement + anti-theft + smart metering blended estimate."

  new_ccgt_lng:
    label: "New CCGT on LNG"
    capex_thb_per_kw: 31000
    fixed_om_fraction_of_capex: 0.03
    lifetime_years: 30
    annual_energy_delta_kwh_per_kw: 4200
    evening_peak_delta_kw_per_kw: -1.0
    estimate: true
    source: "Generic modern CCGT overnight cost + utilization screening."

  smr:
    label: "SMR"
    capex_thb_per_kw: 185000
    fixed_om_fraction_of_capex: 0.04
    lifetime_years: 40
    annual_energy_delta_kwh_per_kw: 7300
    evening_peak_delta_kw_per_kw: -0.95
    estimate: true
    source: "International first-of-a-kind SMR cost ranges; Thailand value not yet public."

  imported_hydro:
    label: "Imported hydro (PPA)"
    capex_thb_per_kw: 22000
    fixed_om_fraction_of_capex: 0.025
    lifetime_years: 30
    annual_energy_delta_kwh_per_kw: 4300
    evening_peak_delta_kw_per_kw: -0.7
    estimate: true
    source: "Indicative cross-border hydro PPA equivalent capacity cost."

hourly_model:
  representative_year: 2024
  data_centre_peak_2037_gw: 8.8
  data_centre_load_factor:
    value: 0.92
    estimate: true
    source: "Hyperscale data-centre operations are typically high load-factor."
  data_centre_evening_peak_coincidence:
    value: 0.95
    estimate: true
    source: "IT load assumed near-baseload with slight cooling-related uplift."