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U.S. Energy Breakdown
Net Primary Resource Consumption 97 Quads
Net electrical imports 0.1
Nuclear 7.7 Dlstrlbute
electricit 11.1
Hydro 3.2 3.2 Electricity 11'0
Fit
0.1 generation Electrical system
Biomass/ 0.06 34.4 23'4 energylosses Rejected
other* 4.0 4.6 energy
4.5 53.2
7.5
0.5 20.7
3.2 Residential/
Natural gasp o •.oo .oo .oo .oo .oo .oo .oo .oo .oo .0 8.0 .o Commercial
0-4•,-a• a -4 0 4.0 4 0 4•, W 4•c-4•; 4•,-n•
19.3 .°,•.q, 9.5; - i ~ ~ ,
~,,o, .,oo.oa.oa.oa.oa.oa.oo _ oo _
- - - Bal. no. 0.7 - 0.8 4
4• -
Net Imports 3.6
3.5 0.1
HII
i i
0.1 0.7
19.3 Export °-a•o i Useful
Coal Industrial ' ' 1111
23.3 1.5 2.2 energyT
22.3 17.9 36.8
_ _r-
0.2 Bal.no.0.3 imports
0.02
Non-fuel
1.0 2 x port
6.6
5.2
U.S. petroleum r - _ 2 13 6
and NGPi_ 15.1 ' 5,g E
Transpor-
Imports 22, 5 _ ° - ~}f ~~,`1 = • 25.9
-
Bal. no. 2.1 as
March 2007
Source: Production and end-use data from Energy Information Administration, Annual Energy Review 1999 _ Lawrence Livermore
'Biomass/other includes wood and waste, geothermal, solar, and wind. National Laboratory
Excreta In the long run, of course, renewable energy is destined to
Our economy is not, metabolically speaking, a thrifty supply a bigger share of the load. But despite the depletion
creature. About 55 percent of the energy that flows into the problems that face both oil and natural gas, fossil fuels will
economy is ejected as T. Rex dung. This waste carries with remain dominant for decades to come. Of course, that's at
it a huge pollution and climate burden. a national level. At a household level, anyone can begin to
Vice President Cheney said that "conservation may be a embrace energy efficiency and wind, solar, or geothermal
sign of personal virtue, but it is not a sufficient basis for a energy. And tens of thousands of families have begun to
national energy plan" Despite this belief, it is obvious that do just that.
T. Rex Americus must become more efficient if it wishes to Access
continue growing. As Amory Lovins and others have noted, Randy Udall, Community Office for Resource Efficiency
more efficient appliances, lightbulbs, or cars.that save one (CORE), PO Box 9707, Aspen, CO 81612
unit of energy on the right side of the chart, avoid the need 970-544-9808 • Fax: 970-544-9599 • rudall@aol.com
to pump in three or four or five additional units of energy www.altenergy.org/core
on the left.
Credit for the energy flow chart is given to the University of
Looking Ahead California, Lawrence Livermore National Laboratory, and
Energy systems change slowly. History shows that none of the Department of Energy, under whose auspices the work
the existing energy flows or prime movers will cede its was performed. This and charts for previous years are
position without a fight. If fuel cells aim to displace internal available at http://en-env.llnl.gov/flow. A chart for the year
combustion engines, they will have to battle for market 2000 will be available sometime in 2002.
share. Likewise for hydrogen, which today does not appear _kED1
on the chart.
Home Power #87 • February/ March 2002 55