Bundesnetzagentur(Bnetza)通常需要至少六个月才能审查和批准关税申请[1] [8]。对于液化天然气设施，运营商必须提前申请从计划生效日期之前的六个月申请裁定的关税批准[8]。
对于在监管期间基准年之后建立了新的天然气供应系统的天然气网络运营商，对费用进行了成本反射计算关税，需要根据第23A ENWG [1]批准。申请应以书面形式或电子方式提交，理想情况下，在单面A4纸上，由注册帖子签名并带有所有必要的文档[1]。
在拉脱维亚，公共事业委员会(PUC)有90天的时间来评估关税提案，并批准或拒绝30天[2]。但是，如果PUC请求其他信息，则批准过程可以延长五到六个月[2]。
引用：[1] https://www.bundesnetzagentur.de/en/rulingchambers/chamber9/04_gno/042_calcnettariffs/0423_approval/chamber9_approval.html
[2] https://www.oecd.org/content/content/dam/oecd/en/publications/reports/2016/09/driving-performance-performance-at-latvia-as-public-spublic-spublic-combom--s-public-commiss-commiss-commiss_g1g1g1g68ed1/9789264257996257964257962-En.pdf
[3] https://www.bundesnetzagentur.de/en/areas/telecommunications/marketregulation/internationaltariffcomparisons/internationaltariffcomparisons_node.html
[4] https://acer.europa.eu/sites/default/files/documents/publications/acer%20Report%20ON%20D-TARIFF%20Methodogy.pdf
[5] https://www.rabobank.com/knowledge/d011446925-germanys-core-core-hydregogen-network-and-network-and-grame-framework-swimplains
[6] https://www.bundeskartellamt.de/shareddocs/publikation/en/berichte/energie-monitoring-2022.pdf?____blob=publicationFile&v=4
[7] https://www.acer.europa.eu/sites/default/files/documents/publications/Acer%20Report%20ON%20D-TARIFF%20Methodologies.pdf
[8] https://www.bundesnetzagentur.de/en/rulingchambers/chamber9/06_lng/chamber9_lng.html