Solar PV panels can only generate electricity when light is falling on them, and they cannot store electricity for use at other times. The best solution to this problem for households in England, Scotland and Wales is to join a Feed-in Tariff Scheme. Your home remains connected to the mains electricity supply, and you can draw on this power whenever you need it, but when your PV panels are working, your electrical appliances run on free solar power. The added advantage of this arrangement is that your energy supplier will pay you a fixed tariff for generating some of your own electricity. In addition, if your PV panels generate more electricity during the day than you use, the excess is fed back to the grid and your energy supplier will pay for the amount of electricity you export to them.
Although they work on the same basic principles, there are variations of both types of solar panels on the market. For example, solar thermal panels can be flat plate Solar collectors or evacuated tube collectors, and solar photovoltaic panels can be monocrystalline, polycrystalline, or amorphous according to how the silicon is arranged. Each type has its pros and cons.
To choose which solar panels will be the best for your home you'll need to weigh up several factors including the initial cost of the panels and installation, how much hot water or electricity you use, the size, structure and orientation of your roof, your existing hot water system, your budget, and whether you will be eligible for any incentive schemes.
Author: Zhejiang Haining Tiange Solar Energy Science Technology Co., Ltd.
Website:http://www.sunnyrainsolar.com/
Main Product::Solar energy,Solar water heater,Solar collectors