光伏发电这么好，自家屋顶就能装，但是在装之前你需要了解这些知识才不会一脸懵逼，盲目跟风。

1.逆变器:逆变器是把电池板产的直流电转化为交流电的装置，必不可少，所以选择合适的逆变器也很重要，不同容量的电站要选择不同规格的逆变器。逆变器都需要注意散热。  

2. 安装方式:针对不同的屋顶有不同的安装方式，平房需要水泥柱与钢架固定，而瓦房屋顶则可以固定在瓦梁上，具体的安装方式需要专业人士制定，切不可为了节省成本而自行安装，不合理的安装方式会对光伏发电系统造成毁灭性伤害。

3.做好防水工作:在安装光伏系统时，首先要保证在避免破坏屋顶的情况下安装。具有防水层的屋顶需要避免打孔，彩钢屋顶进行打孔的需要使用防水胶或胶垫。

安装完成并网后，就可以躺在家里沐浴阳光，等着收钱了，至此，照进你家的每一缕阳光都能帮你赚钱了，源源不断25年…… 家庭光伏电站会走进每家每户，到时候我们就可以告别昂贵的电费，放肆用电放肆嗨了，光伏发电还能有效的减少炭排放量，是绿色可再生能源之一，再也不会有人说你浪费电。

Generally speaking, ordinary families can already meet their daily electricity demand by installing a 5KW PHOTOVOLTAIC power station, and some of the surplus electricity is sold to the country, so the high electricity bill they had to pay before is saved, which is not to earn it! Subsidies get hand soft, number of money hand cramps, national subsidies for photovoltaic power generation, 0.37 yuan per degree, whether for their own use or sold to the state grid; Some places more; There will also be a first-look allowance.Sell electricity to the state, the state to pay, surplus electricity in accordance with the price of 0.45 yuan per kilowatt electricity sold to the state, and all online, the price is in accordance with the benchmark electricity price standard.

Photovoltaics are so good that you can install them on your roof, but you need to know before installing them so you won't be blindsided and blindly follow them.

1. Inverter: The inverter is a device that converts the dc electricity produced by the panel into ac electricity, which is essential. Therefore, it is also very important to choose the right inverter. All inverters need to pay attention to heat dissipation.

2. The installation method: according to different roof installation, bungalows need concrete column and steel frame is fixed, while the tile roof can be fixed on the tile beam, formulate specific installation need professionals, must not in order to save cost and its installation, the unreasonable installation can cause devastating damage to pv power generation system.

3. Do a good job of waterproof work: when installing the photovoltaic system, the first thing to ensure that in order to avoid damaging the roof installation. The roof with waterproof layer needs to avoid drilling, color steel roof drilling needs to use waterproof glue or rubber pad.

4. National photovoltaic subsidy policy: Relevant requirements on the Summary of distributed photovoltaic Subsidy Policy (GuOFA [2013] No. 24) in the Document of The National Development and Reform Commission (FAGAI [2013] No. 1638); For distributed photovoltaic power generation, the subsidy standard is 0.37 yuan per KWH, and the subsidy period is 20 years.Plus subsidies from all regions! The above is basically related to the basic elements of photovoltaic power station installation, know that you are also getting started. Now that you know this, you need to start thinking about the costs and benefits of installation. Without further ado, read the following examples.

Take Huizhou as an example to estimate the investment income of the installation of 5 KW household PHOTOVOLTAIC power station: installed capacity: 5 KW (KW), floor area: about 30 square meters, investment amount: 40,000 to 50,000, grid connection mode: self-use, surplus electricity to the Internet, annual generating capacity of the system: 7200 to 7800 degrees, service life of the system: For 25 years (the total revenue of self-use by customers is more than 200,000 yuan), the annual revenue of all self-use by customers is 0.7 YUAN/KWH (the price of the second ladder) + 0.37 yuan/KWH =1.07 yuan/KWH *7200 KWH =7704 YUAN. The annual revenue of 50% self-use by customers with more than 50% electricity is:1.07 YUAN/KWH *3600 =3852 yuan +50% of net income (purchase price 0.45 yuan/KWH + subsidy 0.37 yuan/KWH) *3600 =2952 Yuan Total: 6,804 yuan. Cost recovery: it is expected to pay back in about 5 years.(Considering different lighting intensity and local subsidies) Annual yield: 15%-20%, free electricity and profit after capital return.

5. Grid-connected power generation: The electricity can be sold to the national power grid only after the photovoltaic power station is grid-connected. Not connected to the network belongs to the off-grid system, can only be spontaneous use oh!The following picture is the network connection process!

Once installed and connected to the Internet, you can lie in your home and soak up the sun, waiting to collect your money. Every ray of sunshine that comes into your home will make you money for 25 years... Family photovoltaic power station will walk into every household, when we can say goodbye to expensive electricity bills, unbriatedly use unbriatedly hi, photovoltaic power generation can also effectively reduce carbon emissions, is one of the green renewable energy, no one will say you waste electricity.