For my Energy Project

This is the proposal for my current energy project. Now, I must go and look at light bulbs...

How efficient are the lights in the house we are currently housesitting? Would energy efficient lighting be worth the cost?

The Energy Star (a seal of approval from the US government,) is stamped on certain energy conserving light bulbs and fixtures. You can find more information at
www.energystar.gov/index.cmf?c=lighting.pr_lighting.
Another helpful site in the lighting field is www.americanlightingassoc.com/info_energywise.php

The data required to answer this question includes:

• wattages for each light bulb in the house
• cost per watt
  
• total cost of replacement energy efficient wattage bulbs and fixtures
• total wattages for energy efficient bulbs

The measurements for this project include:

• amount of wattage used over the a one week span
• documentation charts next to each switch and light fixture
• total cost of used wattage
• formula to show what wattage would be for energy efficient bulbs for one week
  
• subtract cost of wattage of new bulbs from current cost and compare this number with cost of new bulbs, (and fixures.) Is it worth it?

This one is going to be a real eye opener!