The decision was taken at a meeting presided over by Chief Minister Sheila Dikshit.
Officials said white roofs will keep the buildings cool by absorption of less heat. In summer, we can save excess energy used for running ACs and other cooling appliances, they said.
The government is in the process of converting a number of government buildings into 'green buildings' by making them energy efficient.
The Delhi secretariat, which houses the offices of chief minister and other ministers, will also be converted into a green building.
As part of its energy conservation measures, Delhi government has already decided to implement the Energy Conservation Building Code (ECBC) for government buildings in the national capital.
The ECBC provides guidelines and norms for the energy efficient design and construction of buildings. It also provides guidelines for reducing energy requirement, environmentally benign design and construction techniques.
The environment department has already made solar water heater system mandatory in industries, hotels, hospitals, nursing homes, hotels, canteens and residential buildings having an area of 500 sq m.
