除了中國與印度的航空公司，在歐洲機場起降的航空公司皆已遵守歐盟碳排放交易計劃（European Union Emission Trading Scheme, EU ETS），並提報了溫室氣體排放數據。
歐洲氣候行動（Europe's Climate Action）專員Connie Hedegaard表示，中國和印度目前有10家商業航空公司的航線進出歐盟地區，只佔了不到1％的報告數據及3%的氣體排放量。
在計劃的第二年（2011年），航空公司表現出非常高的配合意願，提報1200多份的排放量報告給歐盟成員國。
當歐盟官方公布的數據顯示經濟成長之時，參與歐盟排放交易計劃之發電廠與工廠的碳排放量較去年同期降低超過2%。
歐盟排放交易計劃囊括了冰島、列支敦士登與挪威在內27個成員國的12000組設備。
這些設備顯示2011年溫室氣體排放量下降至18.89億公噸之二氧化碳當量，相當於2010年排放量之2%以上。
2005年，歐盟排放交易計劃實施了總量管制與交易計畫（cap and trade）。它訂定了體系內工廠、發電廠急其他設施所排放的溫室氣體總量。排放量低於上限的公司可把剩餘的額度出售，而若超量需求則可從有剩餘額度的公司買入。在總額度的限制下，這些額度都將保有一定的價值。
排放額度隨著時間逐漸降低，促使總排放量下降。預估2020年的排放量將比2005年降低21%。
Hedegaard表示，某些未達要求單位的規模通常不大，而其總排放量佔不到歐盟排放交易計劃的1%。
在歐盟排放交易計劃之第三階段，即2013年1月1日開始至2020年，將會進行一些改革。
第二階段於2008年1月1日起至2012年12月31日，工業化國家必須滿足其在京都議定書（Kyoto Protocol）的減量排放目標，而歐盟與歐盟成員國即是這樣條件的國家。
2008年以來，排放設施可以使用排放減量信用額度認證，透過京都議定書（ Kyoto Protocol）的彈性機制，以抵消部份的排放量。
京都議定書中的彈性機制包括：
聯合減量（Joint Implementation, JI），允許京都議定書中承諾減量或限制排放的國家，可與其他有同樣承諾之國家相互抵消。聯合減量製訂排放減量單位（Emission Reduction Units, ERUs），相當於每減少一噸二氧化碳的排放量。
清潔發展機制（Clean Development Mechanism, CDM），允許簽署京都議定書之國家以幫助開發中國家之形式，達成排放減量的責任。清潔發展機制製訂排放減量信用額度（Certified Emission Reductions, CERs），相當於每減少一噸二氧化碳的排放量。
自2008年以來，排放減量單位佔總量的1.2%。而在歐盟排放交易計劃中，已使用了1億排放減量單位。
在2008年至2011年期間，排放減量信用額度佔了總量的5.8%。
歐盟排放交易計劃總共使用了4.56億排放減量信用額度，其中2.67億來自中國，0.79億來自印度（分別佔了總量的59%和17%）。
歐盟排放貿易計劃內的溫室氣體排放量也可直接通過購買和刪除排放配額來折抵。
Airlines flying to and from European airports have complied with the EU Emissions Trading Scheme and reported their greenhouse gas emissions data, except for the refusal of aircraft operators from China and India.
Europe's Climate Action Commissioner Connie Hedegaard said today that China and India have only 10 commercial airlines currently operating to or from the EU, representing less than one percent of emission reports and less than three percent of emissions.
In this, the second year of emissions reporting, aircraft operators showed a very high level of compliance, with more than 1,200 emissions reports for 2011 submitted to the Member States.
Emissions of greenhouse gases from European power plants and factories participating in the EU Emissions Trading System fell by more than two percent last year, while the EU economy was growing, according to official figures released today.
The EU ETS covers more than 12,000 installations in the 27 EU member states, as well as Iceland, Liechtenstein and Norway.
Verified emissions of greenhouse gases from these installations dropped to 1.889 billion tonnes of CO2-equivalent last year, more than two percent below the 2010 level.
Launched in 2005, the EU ETS works on the cap and trade principle. There is a cap, or limit, on the total amount of greenhouse gases that can be emitted by the factories, power plants and other installations in the system. Within this cap, companies receive emission allowances which they can sell to or buy from one another as needed. The limit on the total number of allowances available ensures that they have a value.
The number of allowances is reduced over time so that total emissions fall. In 2020 emissions are expected to be 21 percent lower than in 2005.
These noncompliant installations are typically small and in total account for less than one percent of emissions covered by the EU ETS, the commissioner said.
The EU ETS has been reformed for the third trading period, known as phase 3, which will start on January 1, 2013 and runs until 2020.
The second trading period began on January 1, 2008 and runs until December 31, 2012, coinciding with the period during which industrialized countries must meet their Kyoto Protocol emission targets. The European Union and EU Member States have such emission targets.
Since 2008, installations can surrender international certified emission reduction credits, or CERs, generated through the Kyoto Protocol's flexible mechanisms in order to offset part of their emissions.
The two Kyoto flexible mechanisms are:
Joint Implementation projects allow countries with emission reduction or limitation commitments under the Kyoto Protocol to offset them with emission reduction or removal projects in other such countries. JI projects produce Emission Reduction Units, or ERUs, each equivalent to a reduction of one tonne of carbon dioxide emission.
The Clean Development Mechanism, allows countries with commitments under the Protocol to implement emission reduction or removal projects in developing countries, which do not have such commitments. CDM projects produce Certified Emission Reductions, or CERs, each equivalent to a reduction of one tonne of carbon dioxide emission.ERUs have accounted for 1.2 percent of all surrenders since 2008.
A total of 100 million ERUs have been used in the EU Emissions Trading Scheme since 2008.
CERs accounted for 5.8 percent of all surrenders in the period 2008-2011.
In total, the EU Emissions Trading Scheme has been responsible for the use of 456 million CERs - 267 million from China and 79 million from India (59 percent and 17 percent respectively of the total use).
Greenhouse gas emissions also can be offset directly by buying and deleting emissions allowances inside the EU Emissions Trading Scheme.
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