For assistance with lighting calculator, please reference the glossary.
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Glossary and Information
Key rebate terms and definitions kWh – Kilowatt Hour kW – Kilowatt W – Watt Lumens - the amount of light emitted from a Lamp or Fixture Wattage – The amount of energy required to power a Lamp or Fixture. Calculations – Utility rebate companies with calculated savings incentives, calculate the rebate based on the energy savings from a less efficient model to a more efficient model. Lighting Calculator Information Average Existing lifetime and costs for existing products Incandescent – 1500 Hours $1.50 per lamp CFL ≤ 13W - 10000 Hours $5.00 per lamp CFL > 13W - 10000 Hours $7.00 per lamp Reflector – 2500 Hours $5.00 per lamp HID Lamp ≤ 175W – 20000 Hours $13.00 per lamp HID Lamp > 175W – 20000 Hours $20.00 per lamp Linear Fluorescent – 24000 Hours $3.00 per lamp Lighting calculator pre-populates the national average price for commercial electric usage per kWh which is $.12/kWh. Consult your power bill to calculate accurate electricity cost per kWh.