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Vampire Load Calculator

Measure standby power drain and its yearly cost.

Inputs

Inputs and assumptions

Standby watts per device

Devices left plugged in

Rate

Result

Wasted cost per year
Waiting for calculation.
Wasted energy per year
Waiting for calculation.
This calculator is a first-pass screening tool. Verify your utility tariff, metered usage, equipment specifications, and installer quotes before making a decision.

Workspace

Keep the assumptions with the result.

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