Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas

In this study, we consider monthly load forecasting, which is an essential decision for energy infrastructure planning and investment. This study focuses on the Texas power grid, where electricity consumption has surged due to rising industrial activity and the increased construction of data centers...

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Main Authors: Jeong-Hee Hong, Geun-Cheol Lee
Format: Article
Language:English
Published: MDPI AG 2025-08-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/18/15/4135
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author Jeong-Hee Hong
Geun-Cheol Lee
author_facet Jeong-Hee Hong
Geun-Cheol Lee
author_sort Jeong-Hee Hong
collection DOAJ
description In this study, we consider monthly load forecasting, which is an essential decision for energy infrastructure planning and investment. This study focuses on the Texas power grid, where electricity consumption has surged due to rising industrial activity and the increased construction of data centers driven by growing demand for AI. Based on an extensive exploratory data analysis, we identify key characteristics of monthly electricity demand in Texas, including an accelerating upward trend, strong seasonality, and temperature sensitivity. In response, we propose a regression-based forecasting model that incorporates a carefully designed set of input features, including a nonlinear trend, lagged demand variables, a seasonality-adjusted month variable, average temperature of a representative area, and calendar-based proxies for industrial activity. We adopt a rolling forecasting approach, generating 12-month-ahead forecasts for both 2023 and 2024 using monthly data from 2013 onward. Comparative experiments against benchmarks including Holt–Winters, SARIMA, Prophet, RNN, LSTM, Transformer, Random Forest, LightGBM, and XGBoost show that the proposed model achieves superior performance with a mean absolute percentage error of approximately 2%. The results indicate that a well-designed regression approach can effectively outperform even the latest machine learning methods in monthly load forecasting.
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spelling doaj-art-1c52574d690f464c99f1b35c6d2ea1492025-08-20T04:00:54ZengMDPI AGEnergies1996-10732025-08-011815413510.3390/en18154135Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of TexasJeong-Hee Hong0Geun-Cheol Lee1Graduate School of Management of Technology, Korea University, Seoul 02841, Republic of KoreaCollege of Business, Konkuk University, Seoul 05029, Republic of KoreaIn this study, we consider monthly load forecasting, which is an essential decision for energy infrastructure planning and investment. This study focuses on the Texas power grid, where electricity consumption has surged due to rising industrial activity and the increased construction of data centers driven by growing demand for AI. Based on an extensive exploratory data analysis, we identify key characteristics of monthly electricity demand in Texas, including an accelerating upward trend, strong seasonality, and temperature sensitivity. In response, we propose a regression-based forecasting model that incorporates a carefully designed set of input features, including a nonlinear trend, lagged demand variables, a seasonality-adjusted month variable, average temperature of a representative area, and calendar-based proxies for industrial activity. We adopt a rolling forecasting approach, generating 12-month-ahead forecasts for both 2023 and 2024 using monthly data from 2013 onward. Comparative experiments against benchmarks including Holt–Winters, SARIMA, Prophet, RNN, LSTM, Transformer, Random Forest, LightGBM, and XGBoost show that the proposed model achieves superior performance with a mean absolute percentage error of approximately 2%. The results indicate that a well-designed regression approach can effectively outperform even the latest machine learning methods in monthly load forecasting.https://www.mdpi.com/1996-1073/18/15/4135monthly load forecastingenergy demandregression modeldata centersTexas power system
spellingShingle Jeong-Hee Hong
Geun-Cheol Lee
Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
Energies
monthly load forecasting
energy demand
regression model
data centers
Texas power system
title Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
title_full Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
title_fullStr Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
title_full_unstemmed Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
title_short Monthly Load Forecasting in a Region Experiencing Demand Growth: A Case Study of Texas
title_sort monthly load forecasting in a region experiencing demand growth a case study of texas
topic monthly load forecasting
energy demand
regression model
data centers
Texas power system
url https://www.mdpi.com/1996-1073/18/15/4135
work_keys_str_mv AT jeongheehong monthlyloadforecastinginaregionexperiencingdemandgrowthacasestudyoftexas
AT geuncheollee monthlyloadforecastinginaregionexperiencingdemandgrowthacasestudyoftexas