光伏发电是现在正被广泛推行，安全可靠，无污染的将光能直接转变为电能的一种技术。那么一般的家庭用光伏发电设备要多少钱？屋顶能装多大的光伏发电站？一般的家庭用光伏发电设备要多少钱？

      光伏发电设备价格不同材质价格不同，有单晶硅的和多晶硅的，两者之间价格不同，单晶硅的要比多晶硅要好一些，发电效率高些，大概每瓦在5.5元左右（只包括光伏板），多晶硅每瓦在5元左右（只包括光伏板），如果说是斜屋顶装光伏发电的话，每平方米能够装120--130瓦左右，如果是平方的话，每平方米能够装80瓦左右，当然这只是参考价格，具体当以当地市场价格为准。

光伏发电设备的成本

从全国范围来看，太阳能光伏发电的成本是8-12元一瓦来计算的。比如说一个100平米的屋顶，可以做10千瓦，按照10元一瓦来算，最后总包的价格就是10万元。这个价格026包括了设计、设备、施工并网等。具体的价格还是需要结合需求和装机容量来确定。

一般的家庭屋顶能装多大的光伏发电站？

光伏发电站是按瓦(W)来计算的，瓦就是装机容量，不是按照面积来计算的。但是装机容量跟面积也是有关系的。

现在市场上的光伏发电分三种：1.非晶硅光伏组件;2.多晶硅光伏组件;3.单晶硅光伏组件，也是光伏发电的核心部件。

1、非晶硅光伏组件每平方只有最大只有78W，最小只有50W左右。

特性：占地面积大、比较易碎、转换效率低、运输不安全、衰减多快、但是弱光较好。

2、多晶硅光伏组件每平米功率现在市场上较为常见的250W、255W、260W、265W。

特性：衰减慢、使用寿命长相对比单晶硅光伏组件价格要有优势，也是现在市场上比较多的一种。

3、单晶硅光伏组件市场上常见的功率在260W、265W、270W、275W面积是1.63平方米左右。

特性：相对比多晶硅同等面积转换效率稍高一点，造价也当然比多晶硅光伏组件的造价要高些，使用寿命和多晶硅光伏组件基本相同。

屋顶类型

安装光伏发电的屋顶一般有三种：彩钢屋顶、砖瓦结构屋顶、平面混凝土屋顶。屋顶不同，光伏电站的安装方式不同，安装的电站面积也不同。

彩钢瓦屋顶

在钢结构的彩钢瓦屋顶安装光伏电站，通常情况下只在朝南的一面安装光伏组件，铺设比例为1千瓦占面10平方米，也就是1兆瓦(1兆瓦=1000千瓦)项目需要使用1万平方米面积。

砖瓦结构屋顶

在砖瓦结构屋顶安装光伏电站，一般会选在08:00—16:00没有遮挡的屋顶区域铺满光伏组件，虽然安装方式与彩钢屋顶不同，但是铺设比例却相似，也是1千瓦占面积10平方米左右。

平面混凝土屋顶

在平面屋顶安装光伏电站，为了保证组件尽可能多的接收阳光，需要设计出最佳水平倾角，故在每排组件之间需要间隔一定间距，以保证不被前排组件阴影遮挡。所以，整个项目占用的屋顶面积，会大于可以实现组件平铺的彩钢瓦和别墅屋顶。

Photovoltaic power generation is now being widely implemented, safe, reliable, pollution-free direct conversion of light energy into electricity technology.So how much does the average home PV equipment cost?How big a photovoltaic power station can fit on the roof? How much is the average home photovoltaic power generation equipment?

Photovoltaic power generation equipment prices different materials is different, have monocrystalline silicon and polycrystalline silicon, between the two different prices, polycrystalline silicon is better than single crystal silicon, high efficiency, every tile in 5.5 yuan (including photovoltaic panels), polysilicon per watt in 5 yuan (including photovoltaic panels), if inclined housetop with photovoltaic power generation, can install around 120-130 watts per square meter, if is a square, about 80 watts per square meter can, of course this is only a reference price, specific when to local market price shall prevail.

The cost of photovoltaic power generation equipment

Nationwide, the cost of solar photovoltaic power generation is calculated at 8-12 yuan per watt.For example, a 100 square meters roof, can do 10 kilowatts, according to 10 yuan a watt to calculate, the final total package price is 100 thousand yuan. This price includes design, equipment, construction and grid connection.Specific price or need to combine the demand and installed capacity to determine.

How big can a PV power station fit on the roof of an average home?

PV power stations are calculated in terms of watts (W), which is the installed capacity, not the area.But installed capacity and area are also related.

There are three types of photovoltaic power on the market: 1. Amorphous silicon photovoltaic modules; 2.2. Polycrystalline silicon photovoltaic modules; 3. Monocrystalline silicon photovoltaic modules are also the core components of photovoltaic power generation.

1, amorphous silicon photovoltaic modules per square only the largest is only 78W, the smallest is only about 50W.

Features: large footprint, relatively fragile, low conversion efficiency, unsafe transportation, fast attenuation, but weak light is better.

2. The power per square meter of polysilicon photovoltaic modules is now more common in the market: 250W, 255W, 260W and 265W.

Features: slow attenuation, service life looks compared to the price of monocrystalline silicon photovoltaic modules to have an advantage, is now on the market more of a kind.

3. The common power of monocrystalline silicon photovoltaic modules in the market is about 1.63 square meters in 260W, 265W, 270W and 275W.

Features: relatively higher than the same area of polysilicon conversion efficiency, the cost is of course higher than the cost of polysilicon photovoltaic modules, the service life and polysilicon photovoltaic modules are basically the same.

Roof type

There are generally three kinds of roofs for installing photovoltaic power generation: color steel roof, brick and tile structure roof and flat concrete roof. The roof is different, the installation method of photovoltaic power station is different, and the area of the power station is different.

Colored steel tile roof

In the steel structure of the steel tile roof installation of photovoltaic power station, usually only in the south side of the installation of photovoltaic modules, the laying ratio of 1 kilowatt accounted for 10 square meters, that is, 1 megawatt (1 megawatt =1000 kilowatt) project needs to use 10,000 square meters of area.

Tile roof structure

In the brick and tile roof installation of photovoltaic power station, will generally choose at 08:00-16:00 no shelter roof area covered with photovoltaic modules, although the installation method is different from the color steel roof, but the laying ratio is similar, is also 1 kilowatt area of about 10 square meters.

Flat concrete roof

In order to ensure that the modules receive as much sunlight as possible when installing the photovoltaic power station on the flat roof, it is necessary to design the best horizontal inclination Angle. Therefore, a certain interval between each row of modules is required to ensure that the modules are not Shadowed by the front row modules. Therefore, the roof area occupied by the whole project will be larger than the color steel tile and villa roof which can achieve the tiling of components.