Solving "summarize" issues

- self.external_cost have to be calculated from self.emissions to able the application of pv function.

- self.total_production is a float, not a serie -> then round is a function, not a method

Run.py

@@ -105,7 +105,7 @@ def pv(variable):
         self.capture["Total"] = self.capture.sum(axis=1) * kt / Mt
         self.total_capture = self.capture["Total"].sum() * Mt / Gt
 
-        self.external_cost = (self.emissions["Total"] * kt
+        self.external_cost = (self.emissions * kt
                               * parameter.carbon_price * USD / t
                               / MUSD)
         self.total_external_cost = pv(self.external_cost)
@@ -142,7 +142,7 @@ def total(self):
         def f(cost):
             return [round(cost * MUSD / GUSD), "bn USD"]
         d = pd.DataFrame()
-        d["Power produced"] = [(self.total_production * GWh / TWh).round(), "Twh"]
+        d["Power produced"] = [round(self.total_production * GWh / TWh, 1), "Twh"]
         d["System LCOE"] = [round(self.lcoe * (MUSD / GWh) / (USD / MWh), 1), "USD/MWh"]
         d["Total cost"] = f(self.total_cost)
         d[" Construction"] = f(self.total_investment)