Power becomes energy
How much energy does a constant load request in half an hour?
kW and kWhThe power playbook / 12 practical lessons
Power Systems for Datacenter Engineers
A generator fails. The battery takes over. Can you predict when the lights go out?
Start with a 1 MW load and a 100 kWh battery, then change one assumption at a time. Read the calculations here, run each experiment in your browser, and compare the result with the reference Python engine.
Build your power-systems intuition
For datacenter engineers learning power continuity. Begin with power and energy, work through outages and shared failures, then compare aggregate AI demand and annual PUE planning. Basic arithmetic is enough to start.
Account for distribution losses
How much source power is needed to deliver 1,000 kW?
EfficiencyCalculate battery ride-through
Does half the stored energy give half the ride-through duration?
Finite storageBridge generator startup
What changes when startup takes 60 seconds instead of 30?
Sequence and delayAdd a failed generator
What changes if the generator cannot start?
Combined failuresCheck a surviving path
Are two paths enough when either one must carry the whole load?
N+1 capacity reasoningExpose shared control failures
Can a shared control fault defeat both power paths?
Failure domainsFind a single point of failure
What happens to two paths when their common main bus fails?
Common upstream assetsTrack energy before the outage
Why does the 50 kWh case last longer when it can charge first?
Opening balancesInterrupt a 50 MW AI cluster
How long can 5 MWh of stored energy bridge a 50 MW load?
Aggregate AI power demandCatch a sub-second service gap
Does 57 kWh bridge recovery at 500 seconds? Does 58 kWh?
Exact event timingSeparate PUE from continuity
How does assumed PUE change annual energy for the same 50 MW IT load?
Facility energy planningWhat these experiments establish
These are deterministic synthetic electrical examples with explicit units, input scenarios and downloadable results. They teach reserve accounting and failure-path reasoning. They do not predict GPU jobs, grid adequacy, electrical transients or certified facility uptime.
Read about the author, model scope and reproducibility evidence →