Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future

Renewables are the greener substitute for the conventional polluting sources of generating energy. For their successful integration into the power grid, accurate forecasts are required. In this paper, we report the lessons acquired from our previous works on generating time-series ARIMA-based foreca...

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Main Authors: Robert Basmadjian, Amirhossein Shaafieyoun
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/16/6005
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author Robert Basmadjian
Amirhossein Shaafieyoun
author_facet Robert Basmadjian
Amirhossein Shaafieyoun
author_sort Robert Basmadjian
collection DOAJ
description Renewables are the greener substitute for the conventional polluting sources of generating energy. For their successful integration into the power grid, accurate forecasts are required. In this paper, we report the lessons acquired from our previous works on generating time-series ARIMA-based forecasting models for renewables. To this end, we considered a consistent dataset spanning the last four years. Assuming four different performance metrics for each of the best ARIMA-based models of our previous works, we derived a new optimal model for each month of the year, as well as for the two different methodologies suggested in those works. We then evaluated the performance of those models, by comparing the two methodologies: in doing so, we proposed a hybrid methodology that took the best models out of those two methodologies. We show that our proposed hybrid methodology has improved yearly accuracy of about 89.5% averaged over 12 months of the year. Also, we illustrate in detail for the four years under study and each month of the year the observed percentage of renewables and its corresponding accuracy compared to the generated forecasts. Finally, we give the implementation details of our open-source REN4KAST software platform, which provides several services related to renewables in Germany.
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spelling doaj.art-7fbf16498d644a90b15f234db164ab362023-11-19T00:57:23ZengMDPI AGEnergies1996-10732023-08-011616600510.3390/en16166005Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the FutureRobert Basmadjian0Amirhossein Shaafieyoun1Department of Informatics, Clausthal University of Technology, Julius-Albert-Str. 4, 38678 Clausthal-Zellerfeld, GermanyOne Data, Kapuzinerstraße 2c, 94032 Passau, GermanyRenewables are the greener substitute for the conventional polluting sources of generating energy. For their successful integration into the power grid, accurate forecasts are required. In this paper, we report the lessons acquired from our previous works on generating time-series ARIMA-based forecasting models for renewables. To this end, we considered a consistent dataset spanning the last four years. Assuming four different performance metrics for each of the best ARIMA-based models of our previous works, we derived a new optimal model for each month of the year, as well as for the two different methodologies suggested in those works. We then evaluated the performance of those models, by comparing the two methodologies: in doing so, we proposed a hybrid methodology that took the best models out of those two methodologies. We show that our proposed hybrid methodology has improved yearly accuracy of about 89.5% averaged over 12 months of the year. Also, we illustrate in detail for the four years under study and each month of the year the observed percentage of renewables and its corresponding accuracy compared to the generated forecasts. Finally, we give the implementation details of our open-source REN4KAST software platform, which provides several services related to renewables in Germany.https://www.mdpi.com/1996-1073/16/16/6005renewable energy sourcesauto-regressionmoving averageforecasting methodologies
spellingShingle Robert Basmadjian
Amirhossein Shaafieyoun
Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
Energies
renewable energy sources
auto-regression
moving average
forecasting methodologies
title Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
title_full Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
title_fullStr Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
title_full_unstemmed Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
title_short Assessing ARIMA-Based Forecasts for the Percentage of Renewables in Germany: Insights and Lessons for the Future
title_sort assessing arima based forecasts for the percentage of renewables in germany insights and lessons for the future
topic renewable energy sources
auto-regression
moving average
forecasting methodologies
url https://www.mdpi.com/1996-1073/16/16/6005
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