Dataset for: A New Hybrid Framework based on Grey and Neuro-Fuzzy Inference System for Energy Demand Forecasting in Vietnam

This dataset supports the paper "A New Hybrid Framework based on Grey and Neuro-Fuzzy Inference System for Energy Demand Forecasting in Vietnam" (CMES, 2026). File 1 (data_energy_vietnam.xlsx) contains raw annual primary energy consumption and monthly economic indicators (IIP, FDI, commercial electricity output) for Vietnam, 2009–2024, sourced from Our World in Data, MOIT, GSO, and MPI. File 2 (monthly_data_using_denton.csv) contains the monthly energy series derived via Denton proportional disaggregation, used as input to the DeGNA forecasting framework.