If you want to have solar energy alone, the amount of solar panels you need to buy?
Solar energy is one of the components an important renewable energy in the future. Your parents are considering the installation of photovoltaic cells that convert solar energy directly electricity, on its roof, and asked his help. You do some research and know that, on a sunny day in Idaho, sunlight on the surface of the Earth provides kilowatt/m2 about 0.75. Solar panels have an area of 0.5 square meters, operating at 10% efficiency, and cost $ 63. His parents the use of electricity at a rate 2 kW. 1. If your parents want to rely exclusively on solar electricity, the number of solar panels that need to buy? How big should your roof (in feet) to keep the arsenal of the panels? 2. If electricity costs $ 0.08 per kilowatt-hour, how long will your parents to recover their initial investment?
Since there are 24 hours in a day to be completely out of the network also need battery backup, converted a load and an inverter. Buut I digress. I think the Questin wondering how to generate a maximum power of 2 kW of solar panels generate 1 5 * 0.75 * 0.10 0.0375 kw kw kw 2 2/0.0375 54 panels of square feet is 27 m ^ 2 291 square feet. the cost is 54 * 63 $ 3.402 at 2 kw / h 3402 / (2 * 0.08) hours, 21,262 hours _____________________
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