The design plan for phase II of Nedbank‘s headquarters in Johannesburg, South Africa, has achieved the first Green Star SA Building certification for incorporating sustainable building concepts.

The four-star Green Star SA office design v1 rating was awarded under the Green Building Council of South Africa’s (GBCSA) office v1 rating tool.

The eight environmental categories: management, indoor environmental quality, energy, water, transport, materials, emissions, and land use and ecology were part of the sustainable design plan.

Full economy air conditioning system, Dali lighting system and energy efficient lights, black water treatment system, and waste recycling system are all part of the energy-efficiency measures.

The building will save 30% of the usual energy used by using gas for cooking and solar heated geysers.

Construction is expected to be complete by April 2010.