759 reactor units and the world's uranium mines on an interactive globe. For 163 of them, WhereNuc records what they actually produced yesterday — from the U.S. NRC and European grid operators.
Yesterday, unit by unit
Bar height is the unit's power level as a percentage of its rated output. The stubs sitting on the floor are Dresden-2 and Palisades. Europe is tracked the same way in megawatts, on a separate chart — gross and net output are not the same measurement and we don't mix them. See the full picture.
What's inside
Operating, under construction, planned, suspended and shut-down reactors, plus the uranium mines that feed them. Spin it, click any marker, read the unit-level detail. No account, no paywall.
Reactors across the United States and seven European grids, refreshed daily. 380 days of history and counting. Outages, capacity factors and a year of history per unit on the output page.
Public reactor datasets carry errors. When we correct one, the old value, the new value and the source that settled it are all published on the change log. Nothing here is estimated or averaged.
Where the numbers come from
Full detail, including what we calculate ourselves and where the limits are, is on the methodology page.
Questions
Yes. No account, no paywall, no trial. The globe, the daily output pages and the API all open to anyone.
U.S. figures land once a day from the NRC report. European figures arrive per grid area, usually within a day. Every page prints the exact date of the data it is showing, so you never have to guess.
European grids report gross output — everything the generator puts out — while capacity figures are net, after the plant's own consumption. The two are a few percent apart. We show the ratio and label it plainly rather than calling it a capacity factor, which it isn't.
No. If a figure can't be sourced it stays out. When measured output disagreed with a listed capacity, we went to PRIS and found units whose published capacity was the original design value rather than the current one after uprates. Those are corrected and documented on the change log, not averaged away.
Yes. The reactor dataset is derived from an ODbL source, so the API is served under the same licence: use it, including commercially, with attribution and share-alike. Charts embed with a single iframe — see the methodology page.
Belgium, Sweden, Finland, Switzerland, Slovenia, Romania, the UK, Ukraine and Germany don't publish per-unit generation to ENTSO-E, and no equivalent public feed exists for Asia. Those reactors appear on the globe with capacity and status, without a daily figure.