DELAWARE GREENHOUSE GAS EMISSIONS AND SINKS INVENTORY:

SUMMARY

4.5-
4.0-
3.5-

U)

= 3.0-^

2.5-
2.0-
1.5-
1.0-
0.5 -I

0.0-

Delaware Greenhouse Gas Emissions for 1990

Million Metric Tons of Carbon Equivalent



Total Energy

~ carbon
equivalent

/ / / //

Waste

Agriculture
Sector

Industry

Land Use

The report "Delaware Greenhouse Gas Inventory" provides a detailed inventory of
greenhouse gas emissions and sinks for Delaware in 1990. Emissions were estimated
using methods from EPA's 1995 guidance document State Workbook: Methodologies
for Estimating Greenhouse Gas Emissions. In 1990, Delaware emitted 4.3 million
metric tons of carbon equivalent (MMTCE). Delaware estimated emissions of less than
0.1 MMTCE from biomass fuels. Emissions from biomass fuels are not included in the
reported total or the table below.1

The principal greenhouse gases were carbon dioxide, comprising 15.1 million metric
tons (4.1 MMTCE), and methane, with 30,000 metric tons (0.2 MMTCE). Other
emissions included 400 metric tons of nitrous oxide (0.03 MMTCE).

1 Note that the state of the art emission inventory method has advanced since Delaware
completed its inventory; therefore, we revised Delaware's estimates to reflect updated values for
global warming potentials. The most recent inventory guidance is available at
http://www.epa.gOv/ttnchie1/eiip/techrep.htm#qreen.


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Delaware Greenhouse Gas Emissions for 1990

BY SECTOR

C02
(MMTCE)

Methane
(MMTCE)

Nitrous Oxide
(MMTCE)

HFCs, PFCs,
and SF6
(MMTCE)

Total GHG
Emissions
(MMTCE)

Energy - Residential

0.3

*

*

*

0.3

Energy - Commercial

0.1

*

*

*

0.1

Energy - Industrial

0.6

*

*

*

0.6

Energy - Transport

1.1

*

*

*

1.1

Energy - Utility

2.0

*

*

*

2.0

Energy - Exported Electricity

*

*

*

*

*

Energy - Other

*

*

*

*

*

Total Energy

4.1

*

*

*

4.1

Waste

*

0.1

*

*

0.1

Agriculture

0.0

0.0

0.0

*

0.1

Industry

0.0

*

*

*

0.0

Land Use

*

*

*

*

*

Total

4.1

0.2

0.0

*

4.3

All emissions are reported in million metric tons of carbon equivalent (MMTCE).

An asterisk ( * ) indicates that emissions of the gas from this sector were zero, insignificant, or not reported.

Emissions due to coal mining and extraction of natural gas and oil are included in the energy - other
figures, and emissions from biofuel combustion are excluded.

The major source of carbon dioxide emissions was fossil fuel combustion (>99%), with
minor emissions from agricultural application of lime, and lime manufacture. Almost half
of the emissions from fossil fuel combustion came from the utility sector. Combustion of
fossil fuels accounted for over 95% of total greenhouse gas emissions. Contributors to
methane emissions were landfills (76%), manure management (14%), domesticated
animals (8%), and municipal wastewater (2%). Nitrous oxide emissions were
attributable to fertilizer use. Delaware did not evaluate sources and sinks (i.e., an
increase in forest carbon storage) associated with land use.

Delaware emissions in 1990 were 6.5 MTCE per capita, compared to 1990 U.S.
emissions of 6.4 MTCE per capita.


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