Skip to content
PDM WattWise
Sign in Analyze a deal

Lighting Cost Calculator

Compare old bulbs with LEDs including replacements.

Inputs

Inputs and assumptions

Old bulb watts

Old bulb life

Old bulb price

LED watts

LED life

LED price

Bulbs in home

Hours per day

Rate

Result

Yearly savings
Waiting for calculation.
LED total per year
Waiting for calculation.
Old bulbs total 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.

Save this calculation to return to the inputs, result, and report from your private workspace.

Sign in to save Create account

Sign in or create an account to save this calculation.

Continue the analysis

Related research

Guides