Keep the lights on. Balance a live power grid from the control room as demand climbs toward a heatwave peak.
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How to play
You run the dispatch desk of a power grid for one shift. You can never build new plants, you only re-dispatch the generators you have and, when desperate, shed a district. Each tick, demand changes along a seeded daily curve that rises to a heatwave peak beyond your always-on capacity, so you must plan ahead. Match total generation to total load: too little and the frequency sags, too much and it soars. Advance the tick and keep the grid alive to the end of the shift.
Raise or lower each generator toward its setpoint (bounded by its ramp rate)
Bring the slow baseload plant online early, it takes several ticks to synchronize
Fire the expensive peaker only when you truly need the megawatts
Hold the system frequency inside the safe band around 60 Hz
Shed a district to protect the grid when a line is about to overload
Controls
Click a generator's + / − to change its setpoint; use its start button for the slow plant / peaker
Click a district's shed button to cut its load and relieve the grid
Press Next / Advance to step the simulation one tick
Works with mouse or touch on desktop, tablet and phone
Game modes
Daily, everyone runs the same seeded grid and demand curve each day; compete on the daily board
Practice, a fresh random grid every run for unlimited practice
Tips & strategy
Follow the load: keep generation just above demand so the frequency sits near 60 Hz
Start the slow baseload plant BEFORE the peak, you can't summon it instantly
Watch the line-load bars; a line over its limit trips and dumps its load onto neighbors, which can cascade
A small, deliberate brownout (shedding one district) beats an uncontrolled blackout of everything
The peaker is costly but fast, it's your emergency valve, not your baseload
Origins
Grid Operator draws on the real job of a power-system control-room operator, where the electricity you use must be generated at the very instant you use it, second by second, with no meaningful storage. Real grids hold their alternating current near a fixed frequency (60 Hz in North America), balance flows across transmission lines that can overload and trip, and dread the cascading failures that turn one tripped line into a regional blackout. This game compresses that continuous balancing act into a tight, readable daily puzzle.
About Grid Operator
Grid Operator is an original, free browser simulation game, no download, no sign-up. It is a game, not an engineering tool; the grid is simplified for fun and clarity. Play the shared Daily grid to climb the leaderboard, or jump into Practice for endless runs.
A free, original browser game on PlayPendium. No download, no install.