STAREA SEN:
How much electricity Romania is using right now: this page shows the consumption and generation of the National Power System in MW, how much the country imports or exports at its borders, and which sources the power comes from. The figures come from Transelectrica, read every minute, and the page refreshes every 30 seconds.
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Indicative estimates, not official forecasts: computed from the weather forecast and from how the grid has behaved over the last 30 days. Method and limits are published on the sources page.
Unofficial estimates. Weather: Open-Meteo · discharge: Copernicus GloFAS. consumption forecast · electricity prices · sources & method
08The SEN is the national grid that carries electricity from power plants to consumers. Transelectrica is the operator that runs it and publishes, in real time, how much Romania consumes and how much it generates.
It is the difference between the electricity flowing into the country and the electricity flowing out. A positive value means Romania is importing, a negative value means it is exporting. We always spell the direction out in words here, so it cannot be misread.
Because a grid cannot store energy inside itself: whatever is drawn in an instant has to be generated or imported in that same instant. That is not an accounting convention, it is a law of physics. When the figures fail to close, it means a measurement error, not a shortfall.
The difference is made up automatically by imports. Were imports not enough either, grid frequency would drop, reserves would be called up, and as a last resort consumers would be disconnected. That is why a shortfall never appears as a missing number, only as lower consumption.
We add up hydro, wind, solar and biomass, measured against total generation. It excludes nuclear, which is emission-free but not renewable.
At night the panels generate nothing, but the installations still draw a little power to run themselves. That is why the value can fall below zero, while the percentages are clamped at zero.
Transelectrica publishes values roughly once a minute. The site reads the source every minute and the page refreshes every 30 seconds. The time of the measurement is shown at the top.
Bulgaria, Hungary, Serbia, the Republic of Moldova and Ukraine. The Cross-border exchanges section shows the flow on every individual line.
The data comes from Transelectrica and consists of operational values that are not statistically validated. This site is independent and unofficial, published for information only.
Yes. There are two open JSON endpoints: /api/sen for the current state and /api/sen/history for history. Please do not poll more often than once a minute, and cite Transelectrica as the source.