GQL Statement
insulation_value_present =          QUERY_PRESENT(-> { AREA(typical_useful_demand_for_space_heating_apartments_future) });
insulation_value_future =           QUERY_FUTURE(-> { AREA(typical_useful_demand_for_space_heating_apartments_future) });
apartments_insulaton_costs_high =   DIVIDE(12000.0,(220.0 - 118.0));
number_of_apartments_future =       V(households_useful_demand_for_space_heating_apartments_future, number_of_units);
IF(
  GRAPH().future?,
  -> {
    PRODUCT(
      PRODUCT(
        apartments_insulaton_costs_high,
        MAX((insulation_value_present - insulation_value_future),0)
      ),
      number_of_apartments_future
    )
  },
  0.0
)
Result
| 2019 | 0.0 | euro | 
| 2050 | 0.0 | euro | 
Description
This query calculates the insulation costs for apartments_future
The calculated costs are only updated for the future year, in the present year 
the insulation costs are assumed to be zero. This is done with IF-statements.
See https://docs.energytransitionmodel.com/main/insulation/#insulation-costs
 
Characteristics
| Groups |  | 
| Unit | euro | 
| File path | /app/tmp/etsource/gqueries/general/costs/mece_costs/1_building_and_installations/insulation/households/apartments/costs_of_insulation_apartments_future.gql | 
References