AI to reduce food waste in hotels and restaurants

AI could reduce food waste, cut carbon emissions and ease staff burnout in the hospitality sector — yet many operators are not using it, according to research from the University of Surrey.

Published in Sustainable Development, the study — in collaboration with partners in Spain — found that AI technologies could give hotels, restaurants and cruise lines a competitive edge while improving their environmental and social impact.

The findings showed AI is able to:

• cut food waste at the source by analysing kitchen data to identify overproduced dishes, suggest recipes using surplus ingredients and recommend menu changes;
• slash energy and water consumption with smart building systems that adjust heating, cooling and lighting in real time based on occupancy, weather forecasts and energy prices;
• personalise sustainability for guests by tailoring eco-friendly recommendations — from vegan breakfasts to local green activities — to individual preferences; and
• improve staff wellbeing through intelligent scheduling that matches staffing levels to demand, reducing stress and turnover.
   

However, risk aversion, lack of expertise and poor collaboration are holding the sector back from adopting AI.

The researchers spoke to 35 senior hospitality professionals across the UK and Spain — from general managers and CEOs to sustainability directors and tech chiefs — representing hotels, restaurants, coffee chains, cruise lines and catering firms. Using in-depth, semi-structured interviews, the team captured candid, behind-the-scenes accounts of what’s working, what’s failing and why.

“We have shown that smaller businesses fear the upfront costs of AI systems, while larger chains often trial projects but fail to scale them. Expertise is uneven, and data-sharing across the industry is rare — meaning successful innovations aren’t replicated elsewhere,” said Dr Viachaslau Filimonau, Reader in Hospitality Innovation and co-author of the study at the University of Surrey.

The study recommends targeted staff training, industry-wide partnerships and government-backed incentives to accelerate uptake. It also calls for hospitality leaders to embed sustainability goals into their AI strategies from the outset, ensuring that environmental and social gains are measured and reported.

“Our findings make clear that AI is not a silver bullet — but with focused effort, it could help the industry tackle waste, energy use and labour challenges in one move. For hotels and restaurants serious about meeting sustainability targets, the time to act is now,” said Mark Ashton, Associate Professor in Hospitality Management at the University of Surrey.

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