Lighting Energy Cost Basics

Energy estimates become more useful when operating schedules and control assumptions are explicit.

What to record

  • Connected load in watts and whether driver losses are included.
  • Annual operating hours and seasonal schedule assumptions.
  • Tariff, demand charges if relevant, and control reduction factors.

Calculator output is an estimating aid. Confirm project-specific requirements, products, electrical work, and compliance decisions with the responsible professional.

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