The Climate Protection Act (KSG) sways between obligation and discretion in the area of climate-neutral procurement obligations. According to the explanatory memorandum to the law, there is no third-party protection, although there are procedural and consideration obligations. The legislator believes there is an urgent public interest in the legal objectives of the KSG and the Supply Chain Act (LKG). The budgetary approach in procurement law provides for the execution of a concrete budget with concrete results and objectives. This is contrary to the comprehensive approach of the KSG and LSG, which assume an economic climate protection benefit. Various concession alternatives are likely to exist on a regular basis. If so, there is an obligation to take a variant with a lower greenhouse effect into account, and to document it. If an inter-temporal safeguarding of freedom is considered to be a fundamental right, then climate-protection measures are part of the regulations protecting companies under Section 97 (6) GWB. The KSG and LKG strengthen subjective rights of environmentally friendly companies. Even if the principle of proportionality must always be observed according to Section 97 (1) sentence 2 GWB, there is a subjective corporate right to have a climate assessment carried out as a strategic factor at all. The omission of such a consideration can be successfully challenged in a review procedure.