Local worksheet / 07

Define the requirement.
Then ask the next question.

Compare two constant-output scenarios and see which evidence is still missing. This is a scoping worksheet, not a battery-sizing or investment tool.

01 / Frame the studyLocal only

What are you exploring?

This choice changes the questions to investigate, not the arithmetic or a technology recommendation.

Scenario A Requested power kWDuration hours

Scenario B · optionalRequested power kWDuration hours

Worksheet bounds: 0.001 to 1,000,000 kW and 0.001 to 1,000 hours, not technology capability limits. Leave both Scenario B fields empty for one scenario.

02 / Which records do you have?

Select available records. This records your assessment only; nothing is uploaded or verified.

Service and measurement boundaryTimestamped generation and demand profilesSite and connection constraintsTemperature and operating conditionsSystem losses, pumps and auxiliariesMaintenance and replacement assumptionsMaterial identity and traceabilityEnd-of-use responsibilities

Use non-confidential example values. Leaving this worksheet asks you to discard unsaved entries. Reloading or closing the page clears the local worksheet.

03 / Read the requirement

Energy requestedkW × h = kWh

Constant requested output. No equipment, efficiency or cost assumptions.

Enter a study purpose, power and duration to begin.

The question comes first.

Your results will appear here after valid inputs. No illustrative numbers are prefilled.

What this leaves out

The calculation assumes a constant power request for the entire duration. It does not include reserve, losses, charging time, degradation, pumps or other auxiliaries. It cannot specify tank size, stack capacity, capital cost or project returns.

Use independent engineering and site-specific analysis before a technical or financial decision. No certification, supplier match or real-world performance is implied.

Source: Pacific Northwest National Laboratory

Define the requirement.Then ask the next question.

Define the requirement.
Then ask the next question.