When built in 1983, China Resources Building was the tallest in Hong Kong. After the building’s 25th anniversary it was decided to undertake a renovation project to bring the CRB in line with modern sustainability targets, transforming this landmark on the Hong Kong skyline into a showcase for the possibilities of green retrofit.  

Arup was appointed as the green building and LEED consultant for this ambitious regeneration project. We used a façade that optimises daylight and energy consumption with a glazing system that permits only 5% of solar energy to be transmitted indoors, naturally reducing interior temperature. The air-tight façade also contributes to a reduced need for air conditioning. 

Implementing our energy saving strategies, including the use of an innovative lighting system and upgrade of the air handling units, achieved energy saving of 1.65GWh  every year – the equivalent to the energy used by 5,200 fluorescent tubes. The building's CO2 emissions was also reduced by 1,370 tonnes – the equivalent CO2 absorbed by 200,000 pine trees in one year. A greenery plantation area on site contributed further to the reduction of CO2 emissions.

The building is a model of sustainable renovation for existing buildings in Hong Kong. It was the first building renovation project to receive a LEED Core and Shell Gold rating from the United States Green Building Council (USGBC).

China resources building entrance lobby area
A glazing system that allows only 5% of solar energy to be transmitted indoors, naturally reducing interior temperature. © Marcel Lam Photography
Plants and trees outside the China Resources Building
Greenery plantation area contributed to the reduce of CO2 emission of the building. © Marcel Lam Photography