Lack of access to modern energy services is a serious hindrance to economic and social development. A large number of schools in Assam are either not connected to grid or do not have reliable electricity supply, primarily in rural and sub-urban areas. Providing access to modern energy services to those schools will improve quality of school infrastructure and improve sanitation, cleanliness and health of the children and staff of the school.
The objective was to demonstrate the use of renewable energy resources to provide safe and reliable drinking water to the school children, provide running water in the toilets, and to provide hot water for cooking to reduce the fuel cost. Establishing a solar powered water supply system in the schools would generate awareness among the students, teachers and parents’ communities on the issues of global warming. This would also ensure the attendance of girl students in the sch ools after water is made available in t
About the project:
A pilot project in two schools in the Jorhat district of Assam has been implemented to demonstrate the technology and benefits to the children, so that the same can be replicated in other schools where necessary.
The schools identified to implement the pilot project in Jorhat District, Assam were:
- Melamati Govt. Junior Basic School, Potia Gaon, Titabar
- Srimanta Sankar Vidyapith, Bibijan, Titabar
The solar powered water systems in the schools will provide safe and reliable drinking water to 800 school children and teaching staff, provide running water to toilet and save LPG and fire wood by providing hot water for cooking of mid-day meal. Apart from direct monetary benefit, the utmost benefit from the system will be facilitating better health and hygienic environment for school children and provide safe drinking water. Through demonstration of solar system, students will be aware and educated on the solar energy system.
Salient Features of the system:
The salient features of the solar powered water project are:
- Solar water pumping system supply water without using electricity
- Long life of solar pumping system 20 – 25 years
- Ensures cleanliness of toiles by supplying running water
- Solar water heating system provides hot water (60 – 70oC) for cooking
- Preheating of water saves cooking fuel and cooking time
- Pure and safer drinking water keeps water born disease away
- Save 35kWh of equivalent electricity per day for 220 days per year
- Monetary savings more than Rs.40,000.00 per year (from 100LPD solar water heater and 1kW solar pump)
- Reduced 6 tonnes of greenhouse gases emission
The solar powered water system in the school consisted of three different facilities.
- A solar water pumping system to lift water from the ground level to an overhead tank during the daytime. The capacity of the pump was sufficient to lift adequate water required for the school for all purposes.
- A Reverse Osmosis (RO) Water Purifier System powered by solar photovoltaic system with a battery and inverter system, which will work during the day time as well as night time. The capacity of the system is 15 – 20 litres of purified water per hour with a storage facility for purified water. The system draws water from the overhead tank where water is pumped through the solar water pumping system.
- A Solar Water Heating System to heat water up to 60 – 70oC and stores hot water in an insulated storage tank with a capacity of 200 liters. This system does not require any electrical energy and works on thermo-syphon based technology and water to the system is supplied from the overhead water tank.
Cost for implementing a solar powered water project will be based on system design as per site requirement. Budget for a typical site may vary from Rs.15 – Rs.20 lakh. Specifications and cost may vary based on site condition, system requirement and design.
Source: Documents from school and site visit