Five equations presented in Section 3.2 above are used as the method of quantifying the co- benefits achieved under the measures undertaken by IKEA Xuhui Store between 2008 and 2011. In order to further understand how IKEA Xuhui Store has achieved the co-benefits, four interviews and seminars were made with staff of the Energy Conservation Team of
IKEA Shanghai Company with questions related the energy saving measures presented in Table 1. The qualitative data including the energy management regulations, energy management procedures and energy saving investment plans were also collected during the interviews and seminars.