This document discusses energy conservation and provides tips for saving energy at home. It notes that energy conservation refers to using less energy for the same service, while efficient energy use means using less energy for a constant service. Some key facts presented include that the U.S. uses 26% of the world's energy with only 5% of the population, and the average American household emits 23,000 pounds of CO2 annually. Tips for saving energy at home include unplugging devices when not in use, using timers to reduce lighting time, and switching to LED bulbs which use 70% less energy.

1. Energy
conservation

2. A VIDEO ON GLOBAL WARMING IT WILL START AUTOMATICALLY JUST WAIT FOR FOR 2 -3 MIN

3. What is Energy Conservation
• Energy conservation refers to reducing energy
consumption through using less of an energy
service. Energy conservation differs
from efficient energy use , which refers to
using less energy for a constant service.

4. WHY U.S.
• With 5% of the world’s population, the U.S. uses 26%
of the world’s energy.
• A U.S. resident consumes 12,000 kWh of electricity a
year, nine times the world’s avg.
• The average American household emits 23,000
pounds of CO2 annually.
• Two billion people in the world do not have
electricity.
• Just using off the shelf technology we could cut the
cost of heating, cooling, and lighting our homes and
workplaces by up to 80%.

5. Electric Energy Conservation in
the Home
• Art Rosenfeld, Former Commissioner of the
California Energy Commission, and pioneer of
the Environmental Energy Technologies
Division of the Lawrence Berkeley National
Lab
• Some slides from his aide, John Wilson

6. California Electricity
Consumption

7. Annual Electricity Use Per
California Household (5,914 kWh
per household)

8. Total Electricity Use, per capita, 1960 - 2001
0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
KWh
12,000
8,000
7,000
California
U.S.
kWh
Estimate some of the causes of this 2%/year gain. Each year, the cost of conservation programs,
public interest R&D, and standards adds ~1% to electric bills, but cuts 1/2% off the bill. So an
investment of $1 in say 1990 saves $.50 per year for 10 to 20 years.
Calif annual electric bill in 2004 ~ $32 B, so we’ve avoided ~$16 B of bills, but net
saving is only ~$12B/year, i.e. $1000/family/yr.

9. Average Energy Use per
Refrigerator, 1947 to 20091947
1949
1951
1953
1955
1957
1959
1961
1963
1965
1967
1969
1971
1973
1975
1977
1979
1981
1983
1985
1987
1989
1991
1993
1995
1997
1999
2001
2003
2005
2007
2009
0
200
400
600
800
1000
1200
1400
1600
1800
2000
AverageEnergyUseperUnitSold(kWhperyear)
Refrigerator kWh per
Unit
1978 Cal Standard
1990 Federal
Standard
1987 Cal Standard
1980 Cal Standard
1993 Federal
Standard
2001 Federal
Standard
Estimated Standby
kWh (per house)

10. How to save energy?

11. Tips on saving energy
• Unplugging devices when they’re not in use is
a simple way to cut your energy costs.
• Use a timer to reduce the amount of energy
used to light your home.
• Use LED bulbs they use 70% less energy an
lasts for more than 10 years

12. Some management programs on
saving energy