GQL Statement
insulation_value_present =                    QUERY_PRESENT(-> { AREA(typical_useful_demand_for_space_heating_semi_detached_houses_1965_1984) });
insulation_value_future =                     QUERY_FUTURE(-> { AREA(typical_useful_demand_for_space_heating_semi_detached_houses_1965_1984) });
insulation_value_threshold =                  220.0;
semi_detached_houses_insulaton_costs_low =    DIVIDE(10300.0,(403.0 - insulation_value_threshold));
semi_detached_houses_insulaton_costs_high =   DIVIDE(24800.0,(insulation_value_threshold - 118.0));
number_of_semi_detached_houses_1965_1984 =    V(households_useful_demand_for_space_heating_semi_detached_houses_1965_1984, number_of_units);
IF(
  GRAPH().future?,
  -> {
    PRODUCT(
      SUM(
        PRODUCT(
          semi_detached_houses_insulaton_costs_low,
          MAX(MIN((insulation_value_present - insulation_value_threshold),(insulation_value_present - insulation_value_future)),0)
        ),
        PRODUCT(
          semi_detached_houses_insulaton_costs_high,
          MAX(MIN((insulation_value_threshold - insulation_value_future),(insulation_value_present - insulation_value_future)),0)
        )
      ),
      number_of_semi_detached_houses_1965_1984
    )
  },
  0.0
)
Result
| 2019 | 0.0 | euro | 
| 2050 | 0.0 | euro | 
Description
This query calculates the insulation costs for semi_detached_houses_1965_1984
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/semi_detached_houses/costs_of_insulation_semi_detached_houses_1965_1984.gql | 
References