Local governments are key actors when it comes to tackling climate change. Reducing GHG emissions at the local level should be managed and monitored using well-structured mechanisms. In South Korea, the Korea Environment Corporation (KeCO) supports Korean Local governments to calculate their GHG inventories. It has developed a tool based on the IPCC 2016 Guidelines, and it provides technical capacity for developing local GHG inventories. At the global level ICLEI, WRI and C40 developed the Global Protocol for Community-scale GHG inventories (GPC), now embedded in the GCoM Data Standard. This is the recommended approach for all local governments. Yet not all tools used by local governments are aligned to this new global approach. By aligning KeCO’s tool with the GPC, local governments in Korea can benefit in terms of cost and time when reporting their inventory together with their reduction target and action plan – connecting tem to the global developments. ICLEI coordinates the alignment process and the application process to obtain for the KeCO GHG tool an official stamp of approval, confirming the tool is confrm to the GPC, as part of the WRI GHG Protocol. This will enable Korean local governments to report their GG inventoriues using the KeCo tool, thereby receiving confirmation that they are using the Gcom Data Standard of global reporting.