Candle & kerosene have the risk of fire and disease, solar is totally natural and safe energy source.
It does not disrupt the environment or create a threat to Eco-systems the way oil and some other energy sources might. It does not cause greenhouse gases, air or water pollution.
Save on your electricity bill
With a free renewable energy source like solar, you only have to pay when your first-time buying on solar product.then you start to use the free power.