In this Indian city, in 2005 it was made compulsory for all new buildings in the city to install solar water heating system. Identify the city.

Thane

The correct answer is Option 2: Thane

"Thane city is acquiring a brand new image — an environment-friendly makeover. Large-scale use of solar energy, which was considered a somewhat far-fetched concept, has brought in real benefits and results in cost and energy saving. It is being applied to heat water, power traffic lights and advertising hoardings. And leading this unique experiment is the Thane Municipal Corporation. It has made compulsory for all new buildings in the city to install solar water heating system. (Appeared in the column, Making a Difference, Outlook, 01 August 2005)."