NAIROBI / RankWire.AI / – According to the United Nations Environment Programme, the worldwide loss and waste of food costs the global economy over $1 trillion each year. Every day, households waste more than one billion meals. This topic gained renewed attention during the International Day of Awareness of Food Loss and Waste on September 29. UNEP emphasizes that reducing these losses can help conserve land, water, and forests while also lowering emissions related to uneaten food.
The extent of food waste is seen throughout supply chains and consumer markets. The Food and Agriculture Organization states that 13.4% of globally produced food is lost after harvest and prior to retail. Additionally, 19% of the food available for consumption is wasted by households, food services, and retailers. UNEP’s 2024 Food Waste Index estimated that in 2022, 1.05 billion tonnes of consumer-level food waste occurred, with households accounting for 60% of this total.
Both UNEP and FAO report that food loss and waste contribute roughly 8% to 10% of worldwide greenhouse gas emissions. Specifically, food waste alone is responsible for up to 14% of global methane emissions. UNEP programme manager Michael Muratha has pointed out that improving handling, storage, transportation, and cold-chain systems are practical steps to lessen these losses. He also advocates for redistributing surplus safe food to keep edible items in circulation.
Efforts to minimize waste within the food supply chain
Technology is increasingly being utilized to monitor waste in commercial kitchens. One project in the UAE involved Hilton, Winnow, UNEP West Asia, and the Ne’ma initiative, tracking breakfast waste across 13 hotels. The initiative employed AI tools and plate-waste systems to detect overproduction and discarded food. Data from Winnow indicated a 62% overall decrease in breakfast food waste over four months, though this represented a reduction in post-consumer waste by the same percentage rather than in total waste.
The project achieved a 76% drop in pre-consumer waste and a 55% decline in waste after service. Adjustments were made to food production, buffet setup, portion sizes, and staff practices based on data collected from the tracking systems. This example demonstrates how technology can support food-waste measurement and operational improvements. UNEP has also promoted simpler approaches, including community programs that utilize ingredients typically discarded during food preparation.
Global ambitions set on 2030 for waste reduction
The Food Waste Breakthrough was launched by UNEP and its partners at COP30 in Belém, Brazil, in November 2025. The initiative aims for a 50% decrease in global food waste by 2030 and seeks to cut methane emissions related to food waste by up to 7%. The Global Environment Facility allocated $3 million to support this effort at its launch. The event took place at COP30, clarifying previous references that mistakenly placed the initiative at COP31 in Brazil.
The 2030 objective is aligned with Sustainable Development Goal 12.3, which targets halving per-capita food waste at retail and consumer levels. It also strives to reduce food losses across production and supply chains. According to FAO’s September 2026 update, progress toward this target has been limited in recent years. Current UN data reveal that food losses and waste continue to be extensive, consuming resources and incurring significant economic and environmental costs.