Frozen is the new green food

Newark, Nottinghamshire, UK:  Frozen food has a lower CO2 output lower than chilled food says a new report.

Assessing a range of carbon emissions – from post-harvest or slaughter to consumption by the consumer – researchers found that a frozen meal for a family of four produced 5% less CO2 than its identical chilled counterpart exposing a mis-held belief that frozen food is more energy intensive than chilled says the British Frozen Food Federation.

The report, the Carbon Emissions from Chilled and Frozen Cold Chains, based on research conducted by Refrigeration Developments and Testing, calculated the carbon dioxide equivalent  for a typical UK Sunday roast meal for four people. An analysis of the emissions from chicken, peas, carrots, and roast potato ‘cold chains’ from over 40 academic papers was carried out, comparing the following energy sources:

  • Primary food processing
  • Transport and storage
  • Retail storage
  • Storage in the home
  • Refrigerant loss throughout the cold chain
  • Consumer transport (from supermarket to home)
  • Consumer meal preparation and cooking
  • Processing and consumer food waste

Emissions from all sources considered in the study calculated that a chilled meal for four persons was equivalent to 6.546kg CO2 compared to a frozen meal for four at only 6.329kg CO2. Across all of food types tested, all but one frozen product had lower CO2e than its chilled counterpart.

Author Judith Evans, fellow of the Institute of Refrigeration and lead researcher on the study said: “This report goes some way to debunking the commonly held assumption that producing, storing and consuming frozen food is more energy intensive than chilled products. A thorough and rigorous review of the scientific evidence found, within the boundaries considered, frozen to be less CO2 intensive – especially when considering carbon dioxide produced from waste.”

Brian Young, director general of British Frozen Food Federation said: “For a long time frozen has been seen as a ‘poor relation’ to chilled in terms of quality, nutrition and environmental friendliness. Misconceptions around quality and nutritional have recently been overturned – and this ‘world first’ CO2 report substantiates the fact that frozen compares favourably to chilled in its ‘green’ credentials.”

The Carbon Emissions from Chilled and Frozen Cold Chains report was commissioned by the British Frozen Food Federation. A downloadable copy of the report and further information on frozen foods can be found on BFFF’s website.

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