The source I am remembering is specifically about catering, not restaurants per se: The energy used in catering facilities typically accounts for 4-6% of opera

The source I am remembering is specifically about catering, not restaurants per se: The energy used in catering facilities typically accounts for 4-6% of operating costs. Many caterers work on a profit margin that is within this range, so it is obvious that saving energy can directly increase revenue and profitability without the need to increase sales. https://www.carbontrust.com/media/138492/j7895_ctv066_food_prep_and_catering_03.pdf https://www.carbontrust.com/media/138492/j7895_ctv066_food_p...