Energy & Sustainability worked example
Natural Gas Cost per Batch with natural gas use rate of 95 therms / hr: a worked example
Push natural gas use rate up to 95 therms / hr and the picture changes. This example computes every intermediate figure at that operating point. a process engineer or finance lead needs natural gas cost for a batch, run, or recipe
The inputs for this scenario
- Natural gas use rate: 95 therms / hr (raised for this scenario; the documented default is 38)
- Batch heat runtime: 6.5 hr (unchanged)
- Natural gas price: 1.18 $ / therm (unchanged)
Working through the calculation
- Applying the documented formula (Natural gas consumed = natural gas use rate × batch heat runtime) to the inputs above produces each figure below.
- At this operating point the engine returns 729 $ for natural gas cost per batch, the number this scenario is built around.
- At this operating point the engine returns 618 therms for natural gas consumed.
- At this operating point the engine returns 6.5 hr for batch heat runtime.
- At this operating point the engine returns 1.18 $ / therm for natural gas price.
How this compares with the baseline
- Against the tool's baseline example, where natural gas use rate sits at 38 therms / hr and the headline result is 291 $, this scenario comes in 150% above the baseline at 729 $.
- It computes the natural gas consumed in one batch (use rate times runtime) and multiplies by gas price to give the fuel cost for that batch. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.
Results at a glance
- Natural gas cost per batch: 729 $ (headline result)
- Natural gas consumed: 618 therms
- Batch heat runtime: 6.5 hr
- Natural gas price: 1.18 $ / therm
Run it with your numbers
- Every input above is editable in the live Natural Gas Cost per Batch calculator, which recalculates instantly and can be shared with the inputs intact.
Last reviewed 2026-05-12.