prepare_costs: use default lifetime from config.yaml

Rather than hard-coding 25 years.

config.default.yaml

@@ -130,7 +130,6 @@ sector:
   'gas_distribution_grid_cost_factor' : 1.0  #multiplies cost in data/costs.csv
 
 costs:
-  year: 2030
   lifetime: 25 #default lifetime
   # From a Lion Hirth paper, also reflects average of Noothout et al 2016
   discountrate: 0.07

scripts/add_existing_baseyear.py

@@ -442,7 +442,8 @@ if __name__ == "__main__":
     costs = prepare_costs(snakemake.input.costs,
                           snakemake.config['costs']['USD2013_to_EUR2013'],
                           snakemake.config['costs']['discountrate'],
-                          Nyears)
+                          Nyears,
+                          snakemake.config['costs']['lifetime'])
 
     grouping_years=snakemake.config['existing_capacities']['grouping_years']
     add_power_capacities_installed_before_baseyear(n, grouping_years, costs, baseyear)

scripts/make_summary.py

@@ -592,7 +592,8 @@ if __name__ == "__main__":
     costs_db = prepare_costs(snakemake.input.costs,
                              snakemake.config['costs']['USD2013_to_EUR2013'],
                              snakemake.config['costs']['discountrate'],
-                             Nyears)
+                             Nyears,
+                             snakemake.config['costs']['lifetime'])
 
     df = make_summaries(networks_dict)
 

scripts/prepare_sector_network.py

@@ -540,7 +540,7 @@ def prepare_data(network):
 
 
 
-def prepare_costs(cost_file, USD_to_EUR, discount_rate, Nyears):
+def prepare_costs(cost_file, USD_to_EUR, discount_rate, Nyears, lifetime):
 
     #set all asset costs and other parameters
     costs = pd.read_csv(cost_file,index_col=list(range(2))).sort_index()
@@ -558,7 +558,7 @@ def prepare_costs(cost_file, USD_to_EUR, discount_rate, Nyears):
                           "efficiency" : 1,
                           "fuel" : 0,
                           "investment" : 0,
-                          "lifetime" : 25
+                          "lifetime" : lifetime
     })
 
     costs["fixed"] = [(annuity(v["lifetime"],v["discount rate"])+v["FOM"]/100.)*v["investment"]*Nyears for i,v in costs.iterrows()]
@@ -1834,7 +1834,8 @@ if __name__ == "__main__":
     costs = prepare_costs(snakemake.input.costs,
                           snakemake.config['costs']['USD2013_to_EUR2013'],
                           snakemake.config['costs']['discountrate'],
-                          Nyears)
+                          Nyears,
+                          snakemake.config['costs']['lifetime'])
 
     remove_elec_base_techs(n)