In a typical supermarket, refrigerators and cold cases suck up about half of the energy used in the entire store–and they pull power from the grid around the clock.

U.K. supermarket chain the Co-operative has decided to put an end to this rather silly practice, and has equipped 100 of its stores with produce refrigerators that have doors.

A device using technology inspired by the wings on Formula One race cars is being used to save energy costs and reduce food waste at supermarkets in the U.K. and is being tested in the U.S.

Supermarket refrigerators use a closed-loop system with refrigerants that absorb heat from inside refrigerated display cases and transfer it through the condenser often located outside or on the ...