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Conference

Comparative Analysis of Linear and Ensemble Models for Short-Term Residential Energy Forecasting Across Multiple Forecast Horizons

Sep 2026 · 2026 3rd International Conference on Technology Innovation and Its Applications (ICTIIA) · pp. 1-6 · 0 citations · 14 references

Abstract

Accurate forecasting of household appliance energy consumption is essential for supporting smart-home energy management and residential electricity efficiency. This study compares the forecasting performance of Linear Models (LM), Random Forest (RF), and Extreme Gradient Boosting (XGBoost) using a multivariate dataset. Performance was assessed using RMSE, R2, and MAE alongside a Naive Persistence baseline, with statistical significance evaluated using the DM test. Results indicate that LM achieved the highest single-step accuracy (RMSE = 61.15 Wh, R2 = 0.5447, MAE = 28.48 Wh) and was the only model to significantly outperform the naive baseline (p < 0.01), while XGBoost demonstrated superior performance at longer forecast horizons beyond 8 hours. These findings highlight that simpler linear models can outperform ensemble methods in short-term settings, and that horizon-dependent model selection offers practical value for residential energy planning and demand response applications.

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