Some have recommended that governments issue CO2 performance bonds, whose yield would be reduced if companies exceed their carbon target. Another idea, put forward in a recent paper by Michel Aglietta and his colleagues, is to map out a path for an indicative price of carbon called its “social value” and provide green project developers a government-guaranteed carbon certificate representing the value of the corresponding emissions reduction.
要克服这些忧虑，气候行动的支持者将目光投向了激励。一些人建议政府发行二氧化碳表现债券，这种债券的收益率将因为公司超过碳排目标而降低。米切尔·阿格列塔（Michel Aglietta）和他的同事在一篇最新文章中提出了另一个想法，即为碳制定一个参考定价，称之为碳的“社会价值”，并为绿色项目开发者颁发政府担保的、代表相应减排价值的碳证书。他们建议，接着由中央银行对这些开发者提供再融资贷款，以碳证书的价值为限。