The Jakarta regulation for waste cooking oil (WCO) shows the desired WCO to Biodiesel supply chain through the DKI Jakarta Governor Regulation Number 167 the Year 2016. Still, the implementation of said regulation proved inefficient. The study aims to analyze the risks in the supply chain because the WCO to Biodiesel supply chain is vulnerable to different risks than the typical supply chain and the green supply chain. The method used in this research is the group analytical hierarchy process (G-AHP) approach to create a consensus model between actors of the supply chain. Deep interviews were conducted with six experts to identify the risks and the normal scale was used to quantify their preference. Then, the PriEst software assisted the risk weight calculation, AHP matrix validation, and consensus modelling. The findings show the supply chain is vulnerable to 23 risks, categorized into six risk categories. The three risks that cause the most uncertainties in the supply chain are supply chain design risk, key supplier risk, and financial source risk. Technology risks and asset failure risks are the least concern because most WCO conversion is not done in Indonesia. These findings would be useful for the government to focus its effort on the most critical risks.

Used cooking oil are oils that have been used for cooking in restaurants, hotels, food industries, and households. They are dangerous waste when inappropriately disposed since it can interrupt the sewer system or be illegally reprocessed. To combat the issue, the government of Jakarta designed the UCO to Biodiesel supply chain in the Governor’s Regulation number 167 of 2016. However, it has yet to manage households despite potentially producing 210.465,31 litres of UCO per day. The goal of this community service is to create a collection system and to increase awareness of the dangers and potential of UCO in Bassura City Apartment, located in East Jakarta, which did not have UCO collection system. The collection system considers sustainability in terms of not only the environment but also social and economic. The community service is split into five steps: creating local partnerships, supply chain planning, awareness raising by socialization, monitoring and evaluation. Local partnership was created between the local mosque Al-Falah as local UCO collector, BeliJelantah the medium sized UCO collector, and Universitas Bakrie. UCO collected by Al-Falah is bought by BeliJelantah at a rate of Rp4,000.00 /litre. BeliJelantah provides basic equipment such as jerrycans and sieve. Socialization was partially done regularly before sermon and online due to Covid-19 restrictions. Since the implementation of the collection system, Al-Falah mosque has collected 33 Litres which was converted into Rp134,000.00. Sustainability of the collection of used cooking oil will be carried out by residents and the DKM Masjid in direct coordination with BeliJelantah by taking a minimum of 2 jerrycans with a volume of 18 litre or the equivalent of 36 litre. This system can be scaled up by increasing partnerships with more local groups and local management.