This story was originally published on HackerNoon at: https://hackernoon.com/how-we-built-a-per-plant-co2-dataset-for-4551-power-stations-worldwide. An open dataset of 4,551 power stations: measured + modelled CO2, fuel, owner, capacity and climate zone. How we built it in Python, and the honest limits. Check more stories related to data-science at: https://hackernoon.com/c/data-science. You can also check exclusive content about #data-engineering, #python, #global-energy-monitor, #greenhouse-gas-data, #carbon-accounting, #climate-analytics, #energy-infrastructure, #python-etl, and more. This story was written by: @dmytroah. Learn more about this writer by checking @dmytroah's about page, and for more stories, please visit hackernoon.com. The authors built and openly published a dataset covering 4,551 power stations worldwide, combining emissions, ownership, capacity, fuel type, and climate-zone data into a single schema. The project's central finding is that only about 15% of plant-level emissions data comes from direct measurements, while the remaining 85% relies on modelled estimates, making provenance and transparency critical for anyone working with emissions datasets.