Probabilistic Forecasting for Building Energy Systems using Time-Series Foundation Models
- URL: http://arxiv.org/abs/2506.00630v1
- Date: Sat, 31 May 2025 16:38:29 GMT
- Title: Probabilistic Forecasting for Building Energy Systems using Time-Series Foundation Models
- Authors: Young Jin Park, Francois Germain, Jing Liu, Ye Wang, Toshiaki Koike-Akino, Gordon Wichern, Navid Azizan, Christopher R. Laughman, Ankush Chakrabarty,
- Abstract summary: Building energy systems critically depend on the predictive accuracy of relevant time-series models.<n>This paper investigates the applicability and fine-tuning strategies of time-series foundation models (TSFMs) in building energy forecasting.
- Score: 20.57107693396709
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Decision-making in building energy systems critically depends on the predictive accuracy of relevant time-series models. In scenarios lacking extensive data from a target building, foundation models (FMs) represent a promising technology that can leverage prior knowledge from vast and diverse pre-training datasets to construct accurate probabilistic predictors for use in decision-making tools. This paper investigates the applicability and fine-tuning strategies of time-series foundation models (TSFMs) in building energy forecasting. We analyze both full fine-tuning and parameter-efficient fine-tuning approaches, particularly low-rank adaptation (LoRA), by using real-world data from a commercial net-zero energy building to capture signals such as room occupancy, carbon emissions, plug loads, and HVAC energy consumption. Our analysis reveals that the zero-shot predictive performance of TSFMs is generally suboptimal. To address this shortcoming, we demonstrate that employing either full fine-tuning or parameter-efficient fine-tuning significantly enhances forecasting accuracy, even with limited historical data. Notably, fine-tuning with low-rank adaptation (LoRA) substantially reduces computational costs without sacrificing accuracy. Furthermore, fine-tuned TSFMs consistently outperform state-of-the-art deep forecasting models (e.g., temporal fusion transformers) in accuracy, robustness, and generalization across varying building zones and seasonal conditions. These results underline the efficacy of TSFMs for practical, data-constrained building energy management systems, enabling improved decision-making in pursuit of energy efficiency and sustainability.
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