In India, under Jawaharlal Nehru National Solar mission, the ambitious goals that have been established to ensure that there is no penetration to large-scale solar thermal systems for heating water in the household sectors such as industrial in the India. The aim is therefore to achieve 15 million m2 of solar thermal collectors areas in 2017 and 20 million square meters of 2022. The MNRE is running a project UNDP / GEF on assisted by the "global transformation of solar water heating and the initiative to strengthen the market:". India program in the country, the project aims to accelerate and sustain the growth of the market of solar heating of water in the India through a combination of financial incentives and promotion and other support measures, as well as to conserve electricity and other fossil fuels, as well as shaving peak in cities and towns, and use the experiences and lessons learned to promote a similar growth in other countries. The project will contribute partially and take advantage of the objectives of the programme of 11 of five years of the Plan through the installation of 2 million m2 of solar water heating systems. This will result in the reduction of emissions of greenhouse gases from 11 million tonnes of CO2.

 

Solar energy, being abundant and widespread in its availability in the India, makes it one of the most attractive sources of energy. Taking advantage of this energy not only will help to bridge the gap between the demand and the supply of electricity, but also save money in the long run. According to official sources of 100 litres capacity (SWHS) solar water heating system can replace an electric geyser for residential use, and you can save approximately 1500 units of electricity each year, under the terms of the India. Also it has been estimated that around 100 litres per day (lpd) 4 (2 m2 of acquisition) installed in an industry can save about 140 liters of diesel a year. Therefore, the use of solar energy to supply preheated the water heater boiler feed water can also help to save 70-80% of fuel bills. The reduction of pollution and the preservation of the health of the environment are some of the benefi ts co - of this technology. This is probably the reason for the use of solar energy to heat the water has become one of the main applications of thermal solar energy today. On the basis of the above equivalence (100 lpd 1500 units of electricity saving system), it is estimated that in the generation of the same amount of electricity from a coal power plant, 1.5 tons of CO2 is released into the atmosphere annually. A million of SWHSs installed in homes, therefore, result in a reduction of 1.5 million tons of CO2 emissions into the atmosphere. Clearly, SWHS is one of the options more cost effective, viable and sustainable for hot water generation today.