Costs Financial markets 3 Commerce 2 Decision making 2 Economic analysis 2 Forecasting 2 ARIMA modeling 1 Additives 1 Cost benefit analysis 1 Cost-benefit analysis 1 Cost-benefits analysis 1 Design costs 1 Developing countries 1 Dynamic forecast 1 Economic policies 1 Economic policy uncertainty 1 Economics 1 Electric power system economics 1 Electric power transmission networks 1 Electricity and gas 1 Electricity companies 1 Errors 1 Exponential smoothing 1 Financial costs 1 GARCH (1 ,1) 1 Gas companies 1 Gas industry 1 Gasoline 1 Geopolitical risk 1 Geopolitical risks 1