The increases in gas usage in fiscal 2015, 2016, 2017 and 2018 stemmed mainly from adoption of GHP* for air conditioning and gas cogeneration. With this step, the intent is to reduce electricity usage and the amount of energy consumed on a per-unit basis. *GHP (gas heat pumps) is an air conditioning system in which an external unit with a gas engine-powered compressor powers a heat pump for heating and cooling.
Continuing initiatives for reducing waste generated and final amount processed has led to annual increases in recycling ratio.
The primary cause of the increase in waste water volume in FY2014 is the increase in spring in some store.