... conversations with our suppliers,” Mr Jonkers says The next challenge, in Mr Heck’s view, is for companies to tackle the third stage of energy efficiency the energy used by a product once in the hands of ... across Europe, companies like Sainsbury’s and Heineken are looking at energy efficiency beyond their own operations For the more than 2,500 farmers from whom it sources, Sainsbury’s has developed a ... targets and alternative energy is only part of the energy efficiency equation, of course At many companies, responsibility for powering down equipment often remains in the hands of individuals...