Autonomous Lunar Power Grid

An hour-by-hour simulation of the power system for an autonomous lunar outpost — photovoltaic array, fission reactor, battery, regenerative fuel cell, and a controller that decides what to switch off when the reserves run low. Sixty simulated days, just over two lunar cycles.

Every hour of unserved power happened at a fleet reserve of 0.62 — comfortably above the shed threshold, and rising. Energy-limited and power-limited failures are different events, and a single state-of-charge signal is blind to one of them.

Open

The one-line diagram → An operable single-line diagram with the whole simulation running in the page. Scrub the clock, trigger a reactor outage, switch the conductors and converters on and off, resize the array. Run the conformance check → The browser model against the Python model, tick for tick — 198,720 comparisons across three scenarios. Don't take the port on trust; execute it. Source, tests and write-up → 300 Python tests, a mutation check, a compliance audit against NASA and IEEE sources, and the full account of what the model found and what it deliberately does not model.

What modelling the wire costs

60-day runUnservedLoss
Power balance only0.0 kWh—
Conductors10.3 kWh8.56 %
Converters142.1 kWh9.79 %
Both155.5 kWh18.10 %