In daily installation of photovoltaic power generation in the family is the best way?

In fact there are three kinds of household photovoltaic power generation modes: one kind is full access to the Internet, is your hair of electricity sold to the countries, their don't have to, it will enjoy 0. 85 yuan of subsidies, the other is spontaneous for off-grid system, photovoltaic power generation all for my own use, use the

in fact, household photovoltaic power generation has three kinds of modes: one is a fully connected to the Internet, that is to say, you don't have electricity yourself can sell all of the electricity to the state, so that you can enjoy a 0. 85 yuan subsidy. Off-grid system, another is for private use photovoltaic power generation using completely on your own, unused electricity stored in the storage battery, so you don't have to pay their own electricity. The last one is for private use, the rest of the electrical access to the Internet, not run out of electricity sold to the country, so you can save your daily electricity fee, not run out of electricity can be sold to the country to make money. After calculation, finally a model is now the most commonly used household photovoltaic installation mode, its benefits far beyond the first two modes. Many customers do not understand interconnection, that still use after grid-connection photovoltaic power generation. On a rainy day, rain and snow, photovoltaics, rarely some customers will ask whether home without electricity. After networking, power is, in fact, state grid electricity. Photovoltaic (pv) power input state grid directly. For example, a photovoltaic power station generating 100 KWH each day, and its own family with 30 kilowatt-hours of electricity every day. Income is: 100 KWH 0 x subsidies. 42 + 30 kilowatt-hours * local electricity price + 70 KWH electricity sold to countries where x desulfurization electricity price = total income of 100 kilowatt hours of electricity ( In some areas and local subsidies) 。 Mode to household photovoltaic power generation to look after, you have some new understanding? Before installing the household photovoltaic (pv), you must pay attention to the following: 1. Local subsidies to declare process; 2. How much is the area of the installation location, near the environment if there is a shadow, and toward the roof problems. 3. How much is your budget? You can compare several companies, and according to your actual capital and the actual need to select the most appropriate manufacturer. 4. Return on investment, the cost of recovery time.