NAIROBI / RankWire.AI / – According to the United Nations Environment Programme, global food loss and waste impose a cost of over $1 trillion each year on the world economy. Daily, households alone squander more than one billion meals. The issue gained renewed attention around the International Day of Awareness of Food Loss and Waste on September 29. UNEP emphasizes that reducing waste can save land, water, and forests, as well as curb emissions associated with uneaten food.
This problem spans entire food supply chains and consumer markets. The Food and Agriculture Organization reports that 13.4% of global food production is lost between harvest and retail. Additionally, 19% of food accessible to consumers ends up wasted in households, food services, and retail outlets. UNEP’s 2024 Food Waste Index estimates that in 2022, 1.05 billion tonnes of food at the consumer level were discarded, with households accounting for 60% of that waste.
Food loss and waste contribute approximately 8% to 10% of worldwide greenhouse gas emissions. UNEP and FAO state that food waste alone is responsible for as much as 14% of global methane emissions. UNEP programme manager Michael Muratha has pointed out that improving handling, storage, transportation, and cold-chain logistics are practical strategies to curb losses. He also advocates redistributing safe surplus food to help keep edible items in use.
Addressing waste throughout the food system
Technology is increasingly being employed to track waste in commercial kitchens. A project in the UAE involving Hilton, Winnow, UNEP West Asia, and the Ne’ma initiative monitored breakfast waste across 13 hotels. Utilizing AI tools and plate-waste systems, the program identified overproduction and discarded food. Winnow’s data revealed a 62% overall reduction in breakfast food waste over four months, though this figure pertains to waste reduction rather than post-consumer waste specifically.
The initiative achieved a 76% decrease in pre-consumer waste and a 55% reduction in waste after consumption. Data from tracking systems helped teams modify food preparation, buffet layouts, portion sizes, and staff practices. These outcomes demonstrate how technology can support both waste measurement and operational improvements. UNEP has also endorsed simpler, low-tech methods, including community programs that utilize ingredients often discarded during cooking.
Global objectives aim for 2030 reductions
The Food Waste Breakthrough, launched at COP30 in Belém, Brazil, in November 2025, was initiated by UNEP and its partners. The campaign aims to cut global food waste by half by 2030 and also seeks to reduce methane emissions related to food waste by up to 7%. The Global Environment Facility contributed $3 million to support this initiative at its launch. The event took place at COP30, correcting previous references that mistakenly placed the launch at COP31 in Brazil.
This 2030 target aligns with Sustainable Development Goal 12.3, which calls for halving per-capita food waste at retail and consumer levels and reducing losses along production and supply chains. In September 2026, FAO noted that progress toward this goal has been limited in recent years. Current UN data confirms the scale of the issue remains significant, with food losses and waste continuing to drain resources and impose major economic and environmental costs.