{
  "benchmarks": {
    "tec_seebeck_v_per_c": 0.038,
    "tec_resistance_ohm": 2.0,
    "tec_area_cm2": 16,
    "tec_max_dt": 67,
    "tube_count": 24,
    "tube_watts": 100,
    "tube_temp_c": 70,
    "sunbed_surface_cm2": 36100,
    "tec_coverage": 0.4,
    "water_specific_heat": 4186,
    "water_boil_vacuum": 65,
    "water_heat_vaporisation": 2260000,
    "water_tray_litres": 54,
    "elec_kwh_per_kg_steam": 35,
    "elec_kwh_per_kg_pem": 50,
    "elec_kwh_per_kg_hysata": 41.5,
    "elec_theoretical_min": 39.4,
    "elec_efficiency": 0.75,
    "h2_lhv_kwh_kg": 33.3,
    "h2_hhv_kwh_kg": 39.4,
    "h2_density_stp": 0.0899,
    "water_per_kg_h2": 11,
    "o2_per_kg_h2": 8,
    "house_elec_kwh": 2700,
    "house_gas_kwh": 11500,
    "elec_rate": 0.247,
    "gas_rate": 0.057,
    "gas_standing_daily": 0.351,
    "elec_standing_daily": 0.547,
    "water_rate_per_litre": 0.003,
    "hnc_drain_reduction": 0.17,
    "hnc_enhancement": 1.17,
    "boost_eff": 0.88,
    "vacuum_pump_w": 50,
    "brain_w": 0.0062,
    "electrolyser_control_w": 20
  },
  "derived": {
    "n_tec": 902,
    "parasitic_w": 76.2,
    "tubes_w": 2400
  },
  "simulation_72h": {
    "h2_produced_g": 3.72,
    "heat_to_house_kWh": 51.84,
    "tec_electricity_Wh": 504.6,
    "water_consumed_ml": 40.9,
    "final_water_temp_c": 65,
    "final_battery_Wh": 18.0
  },
  "annual_projection": {
    "h2_kg": 0.45,
    "h2_energy_kWh": 15.0,
    "heat_kWh": 6307.0,
    "elec_kWh": 61.0,
    "water_litres": 5.0,
    "o2_kg": 4.0,
    "gas_saved_gbp": 360.0,
    "elec_saved_gbp": 15.0,
    "tubes_cost_gbp": 5193.0,
    "net_gbp": -4790.0
  }
}