Lesson 12 / 12 · Facility energy planning
Separate PUE from continuity
How does assumed PUE change annual energy for the same 50 MW IT load?
Predict before you run
Write down your prediction, then change only the input below. In the interactive lesson, compare the starting case with the challenge and export a worksheet to retain your reasoning.
| Input | Starting value | Challenge value |
|---|---|---|
| Assumed PUE | 1.25 ratio | 1.15 ratio |
Reported quantity: kWh per 8,760 h. The live control accepts 1–2 ratio.
Worked answer Link to this answer
50,000 × 8,760 × 1.25 = 547,500,000 kWh; at 1.15 it is 503,700,000 kWh. The difference is 43,800,000 kWh at identical IT demand. PUE already includes non-IT overhead: do not add continuity losses to it again.
| Configuration | Assumed PUE | Result (kWh per 8,760 h) |
|---|---|---|
| Starting case | 1.25 ratio | 547,500,000 |
| Challenge | 1.15 ratio | 503,700,000 |
Calculated from the same inputs as the interactive lesson. Display rounded to six decimal places; full decimal strings, inputs and energy records are in the downloadable result record.
Reproduce the configuration
Constant 50,000 kW IT demand over 8,760 hours; assumed PUE of 1.25 or 1.15. This annual planning case has no outage timeline. PUE includes non-IT energy; do not add continuity losses again.
This lesson builds an annual planning case for the fixed IT demand and duration above; it does not use an outage preset. Open it above, run the starting case, switch to the challenge, and use “Verify against Python” to compare complete results. Use the worksheet export to keep the prediction, completed inputs and answer together.
Sources and verification
- Lesson definitions and input transformations
- Native Python default/challenge checks
- Electrical continuity contract
- Three reference cases, equations and versioned source records
Cite this lesson
Mohammad Rezwan Khan. “Separate PUE from continuity.” Datacenter Twin Lab, engine 2.0.1. https://khanlab.co.technology/learn/pue/
Documentation source: 4878472c4d6c166c3dbd81aee292a0a56e89ffff. For a numerical claim, also retain the completed inputs and the result record; the live lesson can be changed by its controls.
Original material by Mohammad Rezwan Khan, engine 2.0.1. Synthetic teaching cases; no facility calibration or independent external reproduction has been established. Annual PUE planning and outage continuity are different calculations. Full scope and evidence.