{"id":112938,"date":"2026-02-26T02:44:00","date_gmt":"2026-02-26T01:44:00","guid":{"rendered":"https:\/\/www.sonnenseite.com\/?p=112938"},"modified":"2026-02-26T09:52:03","modified_gmt":"2026-02-26T08:52:03","slug":"how-clean-up-certificates-lead-to-better-climate-protection","status":"publish","type":"post","link":"https:\/\/www.sonnenseite.com\/en\/science\/how-clean-up-certificates-lead-to-better-climate-protection\/","title":{"rendered":"How \u201cclean-up certificates\u201d lead to better climate protection"},"content":{"rendered":"\n
A groundbreaking economic study calculates the effectiveness of this novel policy instrument. The underlying idea is that you are allowed to release the climate gas CO\u2082 into the atmosphere \u2013 but only if you promise to \u201cclean up\u201d later through carbon removal. <\/p>\n\n\n\n
The market forces activated by clean-up certificates can greatly strengthen the fight against global heating without placing an extra burden on the economy. The study was conducted by the Potsdam Institute for Climate Impact Research (PIK) and released in the top publication Journal of Environmental Economics and Management.<\/p>\n\n\n\n
\u201cLinking emission rights to a removal obligation would not actually be anything fundamentally new,\u201d explains Kai Lessmann, PIK researcher and lead author of the study. \u201cThis has long been practised in parts of the economy \u2013 for example, in the return of deposit bottles or old electrical appliances. It is the principle of extended producer responsibility: companies stand not only for the quality of their goods, but also for the disposal of their waste. And here we show the potential of this principle for climate protection.\u201d
According to the study, such a combination deal could provide companies with two distinct advantages. Firstly, unlike the initial emission, the removal will only take place in the future, so the costs are discounted at an imputed interest rate when planning investments. Secondly, these costs are reduced by future advances in removal technologies, such as lower energy requirements for filter systems used in direct capture of CO\u2082 from the air. This creates leeway for regulators. They can balance the scope of the removal obligation relative to the amount of CO\u2082 emitted, and thus strike a balance between \u201crelieving the burden on the economy\u201d and \u201ccleaning up the atmosphere\u201d.<\/p>\n\n\n\n
Future EU contribution to global heating could be halved<\/h4>\n\n\n\n
To quantify the potential impact of clean-up certificates, the research team uses a mathematical model to map demand and pricing, and then applies it to the climate transition in Europe as an example. Based on a calculation by the EU\u2019s climate advisory body ESABCC, the team assumes that the EU will still be allowed to emit a total of 14 gigatonnes of CO\u2082 from 2030 onwards, while still maintaining the 1.5\u00b0C global heating limit in the long term. In the model, all of the remaining budget is managed through emissions trading, meaning that 14 gigatonnes\u2019 worth of simple emission allowances (without recapture obligation) are in circulation, for which companies pay.
The model-based analysis then addresses the following question, among others: if policymakers do not want to invest additional money in climate action nor place an additional burden on the economy, how can they use clean-up certificates to achieve maximum welfare? The analysis automatically offsets the welfare-reducing damage caused by CO\u2082 emissions and the resulting climate change.
The answer is that policymakers would have to limit the amount of clean-up certificates to 17 gigatonnes of CO\u2082 emissions. For every ten clean-up certificates issued, four simple emission allowances should be retired from the market. And by purchasing these clean-up certificates, companies should commit to recapturing a total of 6.8 gigatonnes more CO\u2082 than they emit. As a result, the burden from CO\u2082 trading and climate damages would be 4 percent lower than without clean-up certificates, Notably, the fight against global heating would be greatly strengthened: instead of the 14 gigatonnes of CO\u2082, the EU would then emit a total of only 7.2 gigatonnes of CO\u2082 from 2030 onwards, including removals in line with obligations. Europe\u2019s contribution to future climate change would thus be almost halved.<\/p>\n\n\n\n
Financing for net-negative emissions after 2050<\/h4>\n\n\n\n
The study also shows that the effectiveness of clean-up certificates can be even greater if politicians abandon the \u201cno additional costs\u201d premise for themselves (but not for the economy), thus placing a greater burden on the national budget for climate action. This would enable an 8 percent reduction in the burden of CO\u2082 trading and climate damages across the EU, amounting to around 28 billion euros per year, which corresponds to the benefits of the free trade agreement with Canada (as the research team notes by way of illustration). The study also provides guidance on the amount of collateral that buyers of clean-up certificates should deposit, and recommends the establishment of a European Carbon Central Bank for institutional backing.
\u201cGiven the potential benefits highlighted in this economic analysis, the EU should seriously consider introducing clean-up certificates,\u201d says Ottmar Edenhofer, PIK Director and Chair of the EU\u2019s climate advisory body ESABCC, who co-authored the study. \u201cThe combination of emission right and removal obligation would give the economy important flexibility on the path to climate neutrality. And subsequently, after 2050, it would help finance the net-negative emissions necessary to meet the 1.5\u00b0C limit.\u201d<\/p>\n\n\n