India is a country of villages and different geographic areas. There are many villages in India which are facing acute problem of electricity. Many of them are using kerosene lamps during night, whose fumes are harmful to health. Your solar lantern can be a boom to them. From here you can analyze that there is urgent and immediate need of a product which can produce light and can replace kerosene lantern.
(1) Prerequisites of this business
This idea works well where
(i) There is need for electricity
(ii) There is no grid supply or the power cut is for long hours
(iii) There is enough sun shine
(iv) There is rural population.
This idea is not only for the Indian villages, actually one can implement this idea in any location of the world which meets the above mentioned conditions.
You can start this business which small amount by making solar lantern yourself or you can buy from a good company.
(2) Parts & components required
The components required to make 1 piece of solar lantern are as follows:
(3) The working
When sunlight falls on the panels the current starts flowing into the circuit. The red LED will glow indicating that battery is charging. The current will pass through 1N4007 to the battery and to the 6 LEDs.The diode 1N4007 passes current in one direction and also it prevents back-flow current from battery to the panel. Hence protecting it. When you switch off, the LED will not turn OFF immediately, it will take few micro seconds; this is due to the capacitor attached in the circuit.
The equal amount of current will flow through 6 LEDs.
(4) Business model
There are two basic models:-
(i) You can sell your product directly to the villagers.
(ii) You can set up a charging station by installing big solar panel and connect the number of lanterns.
The lanterns get charge during day time and you can rent them for night for a nominal charge.
Therefore, whosoever require solar lantern can come to the charging station pay the rent and use it for night and place the lantern in the morning for charging.
(5) Maintenance, Performance and Precautions
(7) Investment needed and Payback period
In addition of doing business you are also doing one very important thing which is preserving the environment.