Energy statistic and information

These energy statistics may help you sell spray foam insulation, or help you understand the reasons you should have it in your home. They have been compiled from various sources. Mostly DOE.

1. According to the U.S. Dept. of Energy, the average home spends $1,300/year on energy utility costs.
2. 1/6th of total electricity consumed in the U.S. is used for cooling, costing $40 billion per year.
3. The US Department of Energy (DOE) studies show that 40% of your home’s energy is lost due to air infiltration. This air infiltrates the home in the form of drafts through walls sockets, windows and doorways.
4. The U.S. Environmental Protection Agency states that common sources for indoor air quality problems include chemicals from building materials and mold.
5. California building code efficiency standards (along with those for energy efficient appliances) have saved more than $36 billion in electricity and natural gas costs since 1978. It is estimated the Title 24 standards will save an additional $43 billion by 2013.
6. Air ducts. A typical home loses 20 to 30 percent of the air that flows through its ventilation system. The culprit is leaky ductwork. Properly sealed and insulated ducts and joints, especially those routed through attics where temperatures may vary widely from the home’s living spaces, optimize a system’s efficiency. An insulation value of R-6 is recommended for ductwork
7. Energy Star-qualified homes are independently verified to be at least 30 percent more energy efficient than homes built to the 1993 national Model Energy Code.

Additional Energy Facts and Figures form the Department of Energy (DOE)

The world consumes about 450 quadrillion (quad or 1015) British thermal units (Btu) of energy each year. About 86% of that use comes from burning fossil fuels — petroleum, coal and natural gas.

The United States consumes about 100 quads of energy per year, which is based on about 85% fossil fuel use. Clearly, that’s a lot of energy, but what does it really mean?

1. The United States uses nearly a million dollars worth of energy each minute, 24 hours a day, every day of the year.
2. With less than 5% of the world’s population, the United States consumes about one-fourth of the world’s energy resources.
3. The United States uses about 342 million Btu per person in a year, while the world on average uses 70 million Btu per person per year.

Residential Use

The residential building sector accounts for about 21% of the U.S. consumption total. The typical U.S. family spends almost $1,500 a year on utility bills. Household primary energy use breaks out as follows:

1. Space heating – 32%
2. Water heating – 13%
3. Lighting – 12%
4. Space cooling – 11%
5. Refrigeration – 8%
6. Electronics – 5%
7. Wet clean – 5% (washers, dryers, dishwashers)
8. Cooking – 5%
9. Computers – 1%
10. Other – 8%

Solar Energy

Below are some facts about solar energy:

1. Solar energy striking the earth = 45,151,524 trillion Btu per year (450 times 2005 annual energy consumption).
2. Solar power could meet today’s total U.S. electricity demand with photovoltaic systems covering only 0.4% of the nation in a high-sunlight area such as the Southwest — an area of about 10,000 square miles.
3. Solar energy demand has grown by about 25% per year over the past 15 years.
4. Solar energy is measured in kilowatt-hours (kWh). 1 kilowatt = 1000 watts.
5. 1 kilowatt-hour (kWh) = the amount of electricity required to burn a 100-watt light bulb for 10 hours.

For Perspective

To help put these numbers in perspective:

1. One Btu of energy is released when the red tip of wooden match ignites.
2. A quad of energy is enough power to run all the residential refrigerators in the United States for one year.
3. One hundred quads is about the same amount of energy you would use in gasoline to drive a car around the Earth more than 880 million times (assuming 25 miles per gallon).

Using a combination of energy efficiency and renewable energy technologies, it is possible to maintain the same quality of life yet use significantly less energy. There are many simple ways to save energy, and many options to generate energy from renewable sources, such as the sun. Solar energy technologies are clean and significantly reduce pollutant emissions versus other options. And solar energy is renewable, so we can count on that energy source as long as the sun shines.