Energy Savings of a Cool Metal Roof

A six month energy study from an Indiana Homeowner...

Here is a six month study of the energy savings of a cool metal roof as presented by a homeowner from a moderate climate in Indiana after his new energy-efficient metal roof was installed in early 2011. His roof qualified for the federal energy efficiency tax credit. While savings will always vary somewhat based upon the individual home and homeowner, potential savings can be expected to be even greater in warmer climates. Cool metal roofs work by reducing heat gain into the attic and home, reducing energy consumption through lowered air conditioning needs.

  • May...

    Average temperature was the same in 2010 and 2011. Energy use was 328 kw less in 2011 for a savings to the homeowner of $47.00

  • June...

    Average temperature was 1 degree cooler in 2011 than 2010. Energy use was 404 kw less in 2011 for a savings to the homeowner of $58.00

  • July...

    Average temperature was 1 degree cooler in 2011 than 2010. Energy use was 305 kw less in 2011 for a savings to the homeowner of $44.00

  • August...

    Average temperature was 2 degrees cooler in 2011 than 2010. Energy use was 356 kw less in 2011 for a savings to the homeowner of $51.00

  • September...

    Average temperature was 3 degrees cooler in 2011 than 2010. Energy use was 642 kw less in 2011 for a savings to the homeowner of $80.00

  • October...

    Average temperature was 2 degrees cooler in 2011 than 2010. Energy use was 363 kw less in 2011 for a savings to the homeowner of $52.00

Less energy use, lower electric bills

  1. The homeowner reported that his September and October electric bills were the lowest he has ever had in the home.
  2. During this six month period, the homeowner’s total energy savings was $332 and his energy consumption was over 28.5% less after the cool metal roof was installed.
  3. Part of this savings is due to slightly lower temperatures in 2011 but the homeowner also reported having more house guests in 2011 which would have increased his energy use.

Download this Residential Energy Savings from a Cool Metal Roof case study as a PDF

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