GQL Statement
demand_share_of_households_in_distribution_network = 
  DIVIDE(
    V(households_final_demand_ht_steam_hot_water,demand),
    SUM(
      V(households_final_demand_ht_steam_hot_water,demand),
      V(buildings_final_demand_ht_steam_hot_water,demand),
    )
  );
households_ht_indoor_capital_costs = 
  PRODUCT(
    Q(heat_infrastructure_ht_indoor_capital_costs),
    demand_share_of_households_in_distribution_network
  );
households_ht_indoor_depreciation_costs = 
  DIVIDE(
    Q(heat_infrastructure_households_ht_indoor_investment_costs),
    V(energy_distribution_ht_steam_hot_water,technical_lifetime)
  );
annual_household_indoor_infrastructure_capex = 
  SUM(
    households_ht_indoor_capital_costs,
    households_ht_indoor_depreciation_costs
  );
DIVIDE(
  annual_household_indoor_infrastructure_capex,
  V(households_space_heater_district_heating_ht_steam_hot_water,number_of_units)
)
Result
| 
2019
 | 
22.782682042121934 
 | 
euro | 
| 
2050
 | 
20.321113482073162 
 | 
euro | 
Description
Annual capex of indoor heat infrastructure per household, 
comprised of the indoor household depreciation costs
and indoor capital costs by demand share of households in the distribution network.
 
Characteristics
| Groups | 
 | 
| Unit | 
euro | 
| File path | 
/app/tmp/etsource/gqueries/output_elements/output_series/vertical_stacked_bar_ht_district_heating_costs_per_household/households_ht_indoor_infrastructure_costs_per_household/households_ht_indoor_heat_infrastructure_capex_per_household.gql
 | 
References