zero electricity bill

N Ramakrishnan of Bengaluru has set up horticulture, solar power units, composting systems and rainwater harvesting in his retirement home.

Puducherry-based Dr Brahmanand and Hardie Mohanty built a fully solar-powered house, complete with energy-efficient appliances, to reduce their carbon footprint and live a sustainable lifestyle.

In the middle of Ahmedabad is Kalrav Farmhouse by Vipul Patel Architects which has solar panels, a greywater recycler and other sustainable setups.