The EU promised to cut its CO2 emissions by 20% by 2020, at a cost that the Commission’s own estimates put at about 0.5% of GDP, or roughly €60 billion per year. This is obviously a hefty price tag – at least a 50% increase in the total cost of the EU – and it will likely be much higher (the Commission has previously estimated the cost to be double its current estimate).
例如，欧洲委员会主席巴罗索在今年早些时候提出欧盟应对气候变化建议的时候就采用了这一论点。欧盟承诺到2020年的时候将其二氧化碳的排放削减20%。欧盟委员会自己估计其成本是每年大约600亿欧元，大约为其GDP的0.5%。明显这是一个巨大的代价，相当于欧盟总成本提高至少50%。而且，还有可能更高(欧盟委员会以前估计成本是目前估计的一倍)。