The growing mismatch between demand of electricity for industrial, air-conditioning, pumping and domestic uses, coupled with peak load energy deficit in urban areas, poses a serious problem. About 25% of total commercial energy in India is consumed by services like lighting, air-conditioning, room heating and ventilation. Judicial integration of Solar PV and Solar Thermal Energy System make the building highly energy efficient.

Adoption of Solar Passive Architecture features makes a house cool during summer. With passive concepts, the house will get cool breeze from south though water bodies. It also ensures natural light and better air circulation inside the house.

There will be many active solar energy features in the houses. These include Solar Water Heating System for individual houses, which will provide 100 litre of hot water daily to meet the domestic need. Each Solar Water Heating System will save 2 kW of electrical power.

The house owner will get the following benefits:

• Reduction in electricity bill due to installation of Solar Water Heating System in place of electrical geyser.

• Rebate from power utility @ Rs 0.40 per unit up to a maximum limit of 200 units per month.