This file download contains yearly load and renewables data for the synthetic 2000-bus and 10000-bus cases in CSV format.
H. Li, J. H. Yeo, A. L. Bornsheuer and T. J. Overbye, “The Creation and Validation of Load Time Series for Synthetic Electric Power Systems,” in IEEE Transactions on Power Systems, vol. 36, no. 2, pp. 961-969, March 2021, doi: 10.1109/TPWRS.2020.3018936.