A City-based engineer Prabhakar Wawge, has come up with a solar water heating system, which can be used in multistoried building without using terrace area. It can be used as a wall integrated solar water heating system and does not require any pumping mechanism for circulation. Wawge got the patent for his invention recently. He claims that in comparison with normal solar system his invention reduces the cost of solar water heating system by Rs 3000 to Rs 3500. He has been working in the field for 15 years and had presented research paper 'Solar collector for seven tank process chemical heating' at international conference in Germany in 2004. The solar collector has been developed considering the sun path throughout the year and seasonal hot water requirement. The collector can be installed in South, South-East, West and South-West wall of building. The invention is based on the fin and tub arrangement of the absorber of the collector, which allows it to be used in multistoried building. It also does not need long pipeline to be carried out.Another highlight of the system is that this mechanism will not require cold water tank at the height of 6 feet as it will work with 2 feet head that is normally available at all places.