PT. Biru Karbon Nusantara (PT. BKN) is a company that established in March 2023 as a business entity to manage and utilize carbon credit funds from Indonesia Domestic Biogas Program which was previously manage by Yayasan Rumah Energi (YRE). The aims of PT. BKN is to return the benefits of carbon transactions to the community at the grassroot, restore the planet and align the benefits of activities related to energy and agriculture for sustainability of the universe by providing consulting services, training and sustainable financing.