National Grid ESO vs PM2.5 Open Data Portal

This is Great Britain's electricity system operator's open-data portal, publishing generation mix, demand forecasts, and grid balancing datasets. The operator was transferred to public ownership and rebranded the National Energy System Operator (NESO) on 1 October 2024; the old data.nationalgrideso.com host no longer resolves at all, with the same CKAN data portal now living at neso.energy/data-portal. Its real CKAN gateway at api.neso.energy returns Access-Control-Allow-Origin: * on every response, resolving cors unknown -> yes.

The LASS PM2.5 Open Data Portal aggregates readings from Taiwan's low-cost civic air-quality sensor networks (AirBox, LASS, EPA, and others) into freely downloadable JSON snapshots, refreshed continuously with no key required. It also runs a DCF (Data Calibration Framework) service that publishes machine-learning-corrected PM2.5 estimates per monitoring site.