Reference: 1894 Title: Observation‑Based Solar and Wind Power Capacity Factors and Power Densities Summary: A study of over 400 wind and 1,150 solar power plants reveals that onshore wind farms average 0.5 W/m² and solar farms 5.4 W/m², indicating low output. URL: https://iopscience.iop.org/article/10.1088/1748-9326/aae102