Economics

Lighting Payback Period Calculator

Estimate simple payback from upfront cost, annual energy savings, maintenance savings, and other annual savings.

Lighting calculator Economics Updated August 26, 2026

Inputs

Results

Total annual savings -- $/year
Simple payback -- years
Simple payback -- months
Five-year net savings -- $
Calculation details
Total annual savings
-- $/year
Simple payback
-- years
Simple payback
-- months
Five-year net savings
-- $
Professional review required
--
Important notes
  • Use dated tariff, maintenance, product life, labour, access, and financing assumptions before making investment decisions.
  • This is not financial advice, a savings guarantee, electrical approval, or an Australian compliance claim.

Formulas

  • \(\displaystyle S = S_E + S_M + S_O\)
  • \(\displaystyle \mathrm{Payback} = C_0/S\)
  • Simple payback excludes financing, tax, degradation, escalation, residual value, and risk.

Estimate simple payback from upfront cost, annual energy savings, maintenance savings, and other annual savings.

Lighting Payback Period Calculator is a planning aid. Keep the target source, product data, measurement method, and project assumptions with the result. Confirm compliance, installation, certification, and safety decisions with the responsible professional.