Even twelve hours after the start of the coalition committee of the Union and the SPD, there is still no agreement on the planned package of measures for climate protection. The discussions continued, it was said Friday morning from party circles. According to information from the German Press Agency, the parties again deliberated in separate rounds in the morning.

Around noon, the decisions should actually be submitted to the Climate Cabinet of the Federal Government, decided there and then presented to the public. In the end, it should be ensured that Germany achieves its goal of reducing greenhouse gas emissions by at least 55 percent by 2030 - compared to 1990 levels.

The deliberations in the coalition had been described in advance as extremely complicated. The biggest issue is the design of the planned CO2 pricing. While the SPD pushed for a carbon tax, the Union advocated trading in emission rights. Gasoline and diesel, natural gas, heating oil and coal could become more expensive through such a national trade in CO2 pollution rights.

A possible compromise is a certificate system that would initially apply a fixed price. At the same time, there should be social compensation measures for commuters and low-income households, for example, who would be particularly affected by a higher CO2 price, for example on gasoline or heating oil. For this reason, Ministers of the Environment such as Minister of the Environment Svenja Schulze and Research Minister Anja Karliczek joined the deliberations at times. Economics Minister Peter Altmaier left the chancellery around five in the morning.

The climate expert Michael Pahle of the Potsdam Institute for Climate Impact Research (PIK) warned the coalition parties from a sham, the package of measures should not be a "toothless tiger". "The pricing of CO2 is the key lever to really reduce greenhouse gas emissions," he told the Neue Osnabrücker Zeitung . What is needed is a system with a minimum and a maximum price per ton of CO2 and clear mechanisms in case the cap is exceeded, Pahle warned.

The scientist called on the Union and the SPD to "not mess with individual measures". Higher premiums for the purchase of electric cars, a scrapping premium for oil heating or reforestation could "flank the introduction of a carbon price, but not replace it". Germany is also internationally responsible "to implement a policy that CO2 comprehensive and cost-effective avoids and pursues a clear long-term plan."