statoil hydro the norwegian firm behind the sleipner project says that even with norways heavy carbon tax which last summer reached over 40 a tonne ccs does not make financial sense hydrogen energy international a joint venture between two big resource firms rio tinto and bp says that its proposed ccs plant in california will need extra subsidies even though the state is imposing a carbon price and the project will earn revenues from enhanced oil recovery

斯利普纳项目背后的挪威国家石油公司表示，尽管挪威去年夏天征收了每吨40多美元的高额碳税，但CCS在经济上并不具有意义。国际氢能公司是力拓和英国石油两家大型资源公司的合资企业，该公司表示，尽管加州对碳排放征收了价格，但其拟建在加州的CCS工厂将需要额外的补贴，而且该项目将从提高石油采收率中获得收入

以上为机器翻译结果，长、整句建议使用 人工翻译 。