Extended Efficiency Calculator | |

Calculate the total kilowatts saved by replacing the inefficient lamps with more efficient lamps | |

Original Lamp Wattage | |

Replacement Lamp Wattage | X |

Watts Saved Per Lamp | = |

Number of Lamps to Replace | X |

Total Watts Saved | = |

Total Kilowatts Saved = | |

Calculate the total kWh per year saved | |

Total Kilowatts Saved | |

Enter Hours Used Per Day | X |

Enter Days Used Per Week | X |

Enter Weeks Used Per Year | X |

Total kWh Saved Per Year = | |

Calculate the total energy cost saved per year | |

Total Kilowatts Saved Per Year | |

Energy Cost Per kWh | X |

Total Energy Cost Savings per Year = | |

Payback on Investment | |

Lamp Cost | $ |

Lamp Life Hours | |

Initial Cost of Lighting Upgrade | $ |

Total Energy Cost Savings Per Year | / |

# of Payback Investment Months = | |

Savings over Life of Upgrade = |