THE NUMBERS, EXPLAINED
How to use this calculator.
Meter allocation is supplied; metrics do not separate base loads from guest-driven consumption.
Start with your inputs
Enter energy allocated to rooms (kwh), occupied room-nights, available room-nights, energy unit price (currency/kwh). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Energy allocated to rooms (kWh) | 6000 |
| Occupied room-nights | 200 |
| Available room-nights | 300 |
| Energy unit price (currency/kWh) | 0.2 |
A worked example
With the example inputs above, energy per occupied room-night (kwh) is 30. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Energy per occupied room-night (kWh) | 30 |
| Energy per available room-night (kWh) | 20 |
| Energy cost per occupied room-night | 6 |
How this is calculated
Energy per occupied room-night (kWh)
Divide allocated energy by occupied room-nights.
Energy per available room-night (kWh)
Include both sold and unsold room availability.
Energy cost per occupied room-night
Price allocated energy and divide by occupied nights.
Symbols and units
- a
- Energy allocated to rooms (kWh)
- b
- Occupied room-nights
- c
- Available room-nights
- d
- Energy unit price (currency/kWh)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Meter allocation is supplied; metrics do not separate base loads from guest-driven consumption.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Energy per occupied room-night (kWh); Energy per available room-night (kWh); Energy cost per occupied room-night. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Meter allocation is supplied; metrics do not separate base loads from guest-driven consumption.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
OpenStax: Describe and Identify Cost Drivers ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →