| 2019 | [
  #<Node agriculture_heat_backup_burner_network_gas>,0
  #<Node energy_heat_backup_burner_ht_network_gas>,1
  #<Node energy_heat_backup_burner_lt_network_gas>,2
  #<Node energy_heat_backup_burner_mt_network_gas>,3
  #<Node energy_heat_boiler_ht_electricity>,4
  #<Node energy_heat_boiler_lt_electricity>,5
  #<Node energy_heat_boiler_mt_electricity>,6
  #<Node energy_heat_burner_ht_coal>,7
  #<Node energy_heat_burner_ht_crude_oil>,8
  #<Node energy_heat_burner_ht_hydrogen>,9
  #<Node energy_heat_burner_ht_network_gas>,10
  #<Node energy_heat_burner_ht_waste_mix>,11
  #<Node energy_heat_burner_ht_wood_pellets>,12
  #<Node energy_heat_burner_lt_hydrogen>,13
  #<Node energy_heat_burner_mt_coal>,14
  #<Node energy_heat_burner_mt_crude_oil>,15
  #<Node energy_heat_burner_mt_hydrogen>,16
  #<Node energy_heat_burner_mt_network_gas>,17
  #<Node energy_heat_burner_mt_waste_mix>,18
  #<Node energy_heat_burner_mt_wood_pellets>,19
  #<Node energy_heat_flexibility_p2h_boiler_ht_electricity>,20
  #<Node energy_heat_flexibility_p2h_boiler_mt_electricity>,21
  #<Node energy_heat_flexibility_p2h_heatpump_ht_electricity>,22
  #<Node energy_heat_flexibility_p2h_heatpump_mt_electricity>,23
  #<Node energy_heat_heatpump_drink_water_water_ts_lt_electricity>,24
  #<Node energy_heat_heatpump_drink_water_water_ts_mt_electricity>,25
  #<Node energy_heat_heatpump_surface_water_water_ts_lt_electricity>,26
  #<Node energy_heat_heatpump_surface_water_water_ts_mt_electricity>,27
  #<Node energy_heat_heatpump_waste_water_water_ts_lt_electricity>,28
  #<Node energy_heat_heatpump_waste_water_water_ts_mt_electricity>,29
  #<Node energy_heat_heatpump_water_water_ht_electricity>,30
  #<Node energy_heat_heatpump_water_water_lt_electricity>,31
  #<Node energy_heat_heatpump_water_water_mt_electricity>,32
  #<Node energy_heat_import_ht_steam_hot_water>,33
  #<Node energy_heat_import_lt_steam_hot_water>,34
  #<Node energy_heat_import_mt_steam_hot_water>,35
  #<Node energy_heat_production_ht_residual_heat>,36
  #<Node energy_heat_production_lt_residual_heat>,37
  #<Node energy_heat_production_mt_residual_heat>,38
  #<Node energy_heat_solar_ht_solar_thermal>,39
  #<Node energy_heat_solar_lt_solar_thermal>,40
  #<Node energy_heat_solar_mt_solar_thermal>,41
  #<Node energy_heat_well_deep_ht_geothermal>,42
  #<Node energy_heat_well_deep_mt_geothermal>,43
  #<Node energy_heat_well_shallow_heatpump_mt_geothermal>,44
  #<Node energy_heat_well_shallow_lt_geothermal>,45
  #<Node industry_heat_backup_burner_network_gas>,46
  #<Node industry_heat_burner_coal>,47
  #<Node industry_heat_burner_crude_oil>,48
  #<Node industry_heat_burner_hydrogen>,49
  #<Node industry_heat_burner_lignite>,50
  #<Node industry_heat_combined_cycle_gas_power_fuelmix>,51
  #<Node industry_heat_engine_gas_power_fuelmix>,52
  #<Node industry_heat_turbine_gas_power_fuelmix>,53
  #<Node industry_heat_turbine_hydrogen>,54
  #<Node industry_heat_ultra_supercritical_coal>,55
  #<Node industry_heat_well_geothermal>,56
  #<Node industry_heat_wood_pellets>,57
] | nodes | 
| 2050 | [
  #<Node agriculture_heat_backup_burner_network_gas>,0
  #<Node energy_heat_backup_burner_ht_network_gas>,1
  #<Node energy_heat_backup_burner_lt_network_gas>,2
  #<Node energy_heat_backup_burner_mt_network_gas>,3
  #<Node energy_heat_boiler_ht_electricity>,4
  #<Node energy_heat_boiler_lt_electricity>,5
  #<Node energy_heat_boiler_mt_electricity>,6
  #<Node energy_heat_burner_ht_coal>,7
  #<Node energy_heat_burner_ht_crude_oil>,8
  #<Node energy_heat_burner_ht_hydrogen>,9
  #<Node energy_heat_burner_ht_network_gas>,10
  #<Node energy_heat_burner_ht_waste_mix>,11
  #<Node energy_heat_burner_ht_wood_pellets>,12
  #<Node energy_heat_burner_lt_hydrogen>,13
  #<Node energy_heat_burner_mt_coal>,14
  #<Node energy_heat_burner_mt_crude_oil>,15
  #<Node energy_heat_burner_mt_hydrogen>,16
  #<Node energy_heat_burner_mt_network_gas>,17
  #<Node energy_heat_burner_mt_waste_mix>,18
  #<Node energy_heat_burner_mt_wood_pellets>,19
  #<Node energy_heat_flexibility_p2h_boiler_ht_electricity>,20
  #<Node energy_heat_flexibility_p2h_boiler_mt_electricity>,21
  #<Node energy_heat_flexibility_p2h_heatpump_ht_electricity>,22
  #<Node energy_heat_flexibility_p2h_heatpump_mt_electricity>,23
  #<Node energy_heat_heatpump_drink_water_water_ts_lt_electricity>,24
  #<Node energy_heat_heatpump_drink_water_water_ts_mt_electricity>,25
  #<Node energy_heat_heatpump_surface_water_water_ts_lt_electricity>,26
  #<Node energy_heat_heatpump_surface_water_water_ts_mt_electricity>,27
  #<Node energy_heat_heatpump_waste_water_water_ts_lt_electricity>,28
  #<Node energy_heat_heatpump_waste_water_water_ts_mt_electricity>,29
  #<Node energy_heat_heatpump_water_water_ht_electricity>,30
  #<Node energy_heat_heatpump_water_water_lt_electricity>,31
  #<Node energy_heat_heatpump_water_water_mt_electricity>,32
  #<Node energy_heat_import_ht_steam_hot_water>,33
  #<Node energy_heat_import_lt_steam_hot_water>,34
  #<Node energy_heat_import_mt_steam_hot_water>,35
  #<Node energy_heat_production_ht_residual_heat>,36
  #<Node energy_heat_production_lt_residual_heat>,37
  #<Node energy_heat_production_mt_residual_heat>,38
  #<Node energy_heat_solar_ht_solar_thermal>,39
  #<Node energy_heat_solar_lt_solar_thermal>,40
  #<Node energy_heat_solar_mt_solar_thermal>,41
  #<Node energy_heat_well_deep_ht_geothermal>,42
  #<Node energy_heat_well_deep_mt_geothermal>,43
  #<Node energy_heat_well_shallow_heatpump_mt_geothermal>,44
  #<Node energy_heat_well_shallow_lt_geothermal>,45
  #<Node industry_heat_backup_burner_network_gas>,46
  #<Node industry_heat_burner_coal>,47
  #<Node industry_heat_burner_crude_oil>,48
  #<Node industry_heat_burner_hydrogen>,49
  #<Node industry_heat_burner_lignite>,50
  #<Node industry_heat_combined_cycle_gas_power_fuelmix>,51
  #<Node industry_heat_engine_gas_power_fuelmix>,52
  #<Node industry_heat_turbine_gas_power_fuelmix>,53
  #<Node industry_heat_turbine_hydrogen>,54
  #<Node industry_heat_ultra_supercritical_coal>,55
  #<Node industry_heat_well_geothermal>,56
  #<Node industry_heat_wood_pellets>,57
] | nodes |