據今日油價網站5月4日消息 美國能源信息署（EIA）周二表示，美國與能源相關的二氧化碳（CO2）排放量去年下降了2.8%，抵消了2018年二氧化碳排放量增長2.9%的影響。

EIA估計，2019年與能源使用相關的二氧化碳排放量下降幅度超過美國能源消費量，美國能源消費量在2019年下降了0.9%。

2019年能源部門二氧化碳排放量的下降抵消了上一年這些排放量的增加，這是過去五年中與能源相關的二氧化碳排放量唯一的年度增長。

2018年，由于極端的夏季和冬季天氣，天然氣消費量增加，在經濟強勁的情況下，運輸業對石油的需求增加，導致美國扭轉了能源部門數年來二氧化碳減排的局面。早在2018年，美國與能源相關的二氧化碳排放量較2017年有所增加，主要原因是天然氣和石油的排放量增加。EIA在2019年11月表示，2018年的排放量增長是2014年以來首次出現此類年度增長。根據EIA的數據，盡管2018年的排放量有所上升，但仍比2005年與能源相關的排放量低12%。

EIA今天表示，到2019年，美國與能源相關的二氧化碳排放量比2007年的峰值下降了15%。

美國石油燃料的二氧化碳排放量每年下降0.8%，其中近一半與汽油消費有關，而使用天然氣的二氧化碳排放量則上升3.3%。煤炭的二氧化碳排放量下降了14.6%，這是1973年EIA年度二氧化碳數據系列中，由于煤炭船隊不斷退役，任何燃料的二氧化碳排放量每年下降的最大百分比。

根據EIA的數據，美國現在從煤中排放的二氧化碳比從汽車汽油中排放的要少。

王磊 摘譯自 今日油價

原文如下：

U.S. Energy CO2 Emissions Drop In 2019, Offsetting 2018 Rise

Energy-related carbon dioxide (CO2) emissions in the United States declined by 2.8 percent last year, offsetting a 2.9-percent carbon emissions increase in 2018, the Energy Information Administration (EIA) said on Tuesday.

CO2 emissions related to energy use in 2019 dropped more than energy consumption in the United States, which fell by 0.9 percent in 2019, the EIA has estimated.

The 2019 drop in CO2 emissions in the energy sector offset the prior year’s increase in those emissions, which was the only annual rise in CO2 energy-related emissions in the past five years.

In 2018, higher natural gas consumption due to extreme summer and winter weather and increased petroleum demand in transportation in a strong economy resulted in the United States reversing several years of CO2 emissions reductions in the energy sector. Back in 2018, U.S. energy-related CO2 emissions increased compared to 2017, primarily due to the higher emissions from natural gas and petroleum. The emissions increase in 2018 was the first such annual rise since 2014, the EIA said in November 2019. Even with the 2018 rise, the emissions in 2018 were still 12 percent lower than the energy-related emissions back in 2005, according to EIA’s data series.

By 2019, U.S. energy-related CO2 emissions had declined by 15 percent from their peak in 2007, the EIA said today.

U.S. CO2 emissions from petroleum fuels—nearly half of which are associated with gasoline consumption—dropped by 0.8 percent annually, while CO2 emissions from the use of natural gas rose by 3.3 percent. CO2 emissions from coal fell by 14.6 percent – the largest annual percentage drop in any fuel’s CO2 emissions in EIA’s annual CO2 data series dating back to 1973, due to continuous coal fleet retirements.

According to EIA data, the United States now emits less CO2 from coal than from motor gasoline.