To align with the green policy's procurement process, he said when making PC purchase-decisions, factors like an auto-sleep feature and power consumption index are included. This policy has allowed Knight Frank to save HK$466 of power cost per PC throughout its lifecycle.

Yue said that small individual savings add up across the company's Greater China operation, and the LOOP initiative helps raise awareness.

"Power wastage is very difficult to quantify," said Yue. "We hope to bring more visibility and awareness among our colleague through quantifying our power consumption."

Besides applying IT management experiences and methodology in green IT initiatives, IT's active participation of the company's strategic goal is also a "good exercise for IT executives to raise visibility across the company and involve CSR in the company's strategic plan," Mortensen added.