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家用光伏太阳能发电一套多少钱?

很多电站投资方经常会问到:家用光伏太阳能发电一套多少钱?家用光伏发电系统的成本取决三个因素:
1、设备成本。即光伏逆变器、太阳能电池板等。
不同的光伏安装公司有自己的定价标准,目前光伏发电系统的合理建设成本一般在每瓦8-10块钱左右。光伏组件大约占总投资的 49%,逆变器及其它电气设备大约占10%,电缆和支架各占大约10%,这几个分项所占比例较高。
2、装机容量。
怎么算自己家的装机容量?小编在之前一篇科普文中介绍过。主要看两点:每月用电量与可安装面积。根据当前实际的用电量情况来判断需要安装多少千瓦的光伏电站,这样比较经济。也可以建设稍大功率的电站,这样用不完的电可以并网卖给国家。
计算方法:每千瓦光伏发电系统每天可以发四度电,需要10平方安装面积。只要光伏电站的发电量大于家里的用电量,那么就可以带动家里所有的电器。
比如家里每个月要用360度电,屋顶可安装面积50平方。
根据计算方法,家里可以装3KW光伏发电系统就可以满足每月的所有用电,安装面积30平方。如果想将家里的屋顶全部利用起来,那么最多可装5KW光伏发电系统,既可以满足家里的用电,还可以有多余的电上传到国家电网,卖电赚钱。
3、补贴政策。
此外,还有地方补贴,不同省份地区补贴力度都不一样,这个需要咨询当地的政策。
家庭光伏发电的收益包括三部分:
1、补贴赚钱:市县补贴(各地略有不同),不论是自己用了还是卖了,只要发的电都有补贴。
2、节省电费:发电自己用,不用交电费,等于赚钱了。
3、卖电赚钱:用不完的电卖给国家,卖电价格按照当地燃煤脱硫机组标杆电价0.56元/度左右。
(各地电价略有不同)。
家庭光伏发电接入电网的模式有两种可选择:
自发自用,余电上网(优先自己用,多余卖给国家)
全部上网(所发电量全部卖给国家)
家庭光伏发电一般选择第二种,即自发自用,余电上网。这样是不需要蓄电池的,晚上不能发电的时候可以直接用电网的电

Many power station investors often ask: how much is a set of household photovoltaic solar power generation?  The cost of a home photovoltaic system depends on three factors:  

1. Equipment cost.  Namely photovoltaic inverters, solar panels and so on.  

Different photovoltaic installation companies have their own pricing standards. At present, the reasonable construction cost of photovoltaic power generation system is generally about 8-10 yuan per watt.   Photovoltaic modules account for about 49 per cent of total investment, inverters and other electrical equipment for about 10 per cent, and cables and brackets for about 10 per cent each.  

2. Installed capacity.  

How to calculate the installed capacity of his home?  Xiaobian introduced it in a previous popular science article.  Mainly see two points: monthly electricity consumption and installation area.   It is more economical to determine how many kilowatts of photovoltaic power stations need to be installed according to the current actual electricity consumption.  It could also build slightly more powerful power stations so that surplus electricity could be connected to the grid and sold to the state.  

Calculation: Each kilowatt photovoltaic system can generate four kilowatts of electricity per day, requiring 10 square meters of installation area.   As long as a photovoltaic plant produces more electricity than a home uses, it can power all the appliances in the home.  

For example, 360 KWH of electricity is used in our home every month, and the roof can be installed on an area of 50 square meters.  

According to the calculation method, the home can be installed with 3KW PV system can meet all the monthly electricity consumption, installed area of 30 square meters.   If you want to use the whole roof of your home, you can install up to 5KW photovoltaic system, which can not only meet the electricity consumption of your home, but also have the surplus electricity to the national grid and sell electricity to make money.  

3. Subsidy policies.  

In addition, there are local subsidies, subsidies in different provinces and regions are not the same, this need to consult local policies.  

The benefits of home PV power generation include three parts:  

1, subsidies to make money: city and county subsidies (slightly different around), whether they use or sell, as long as the electricity has subsidies.  

2, save electricity: power generation for their own use, do not pay electricity, equal to make money.  

3. Make money by selling electricity: Sell the surplus electricity to the state at a price of 0.56 yuan/KWH based on the benchmark price of local coal-fired desulfurization units.  

(Electricity prices vary slightly.)  

There are two options for connecting home PV power to the grid:  

Self-use, surplus electricity to access the Internet (priority for their own use, surplus to sell to the state)  

Get all the electricity online (all the electricity generated is sold to the state)  

Family photovoltaic power generation generally choose the second, that is, spontaneous self-use, electricity Internet.  This is no need for batteries, can not generate electricity at night when the grid can be directly used  



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