施工人员正在董强家屋顶安装光伏和风电设备（4月27日摄）。当日，天津首例居民“自发电”并网申请市民董强正式开始在家中安装光伏板、风机等新能源设备。预计本月即可完成施工，进入调试。待并网完成后，董强就将正式发电卖给国家。董强安家将安装一组3000瓦的光伏发电设备以及一组3000瓦的风力发电设备。据估算，这组新能源设备及安装将花费约6.5万元，每天发电18度左右，大约12年可收回成本。新华社记者 毛振华 摄     Construction personnel are Dong Jianggu roof installation of photovoltaic and wind power equipment(April 27 is taken).On the day,The first residents in tianjin"Spontaneous electric"Grid citizens Dong Jiang officially began to install photovoltaic panels in the home/The fan and other new energy equipment.This month is expected to complete the construction,Enter the debug.Upon the interconnection,Dong Jiang will started production sold to the country.Dong Jiang home to install a set of 3000 mw photovoltaic power generation equipment and a set of 3000 megawatts of wind power equipment.It is estimated,This group of new energy equipment and installation will cost about 65000 yuan,Every day power 18 degrees or so,Recoverable cost about 12 years.The xinhua news agency记者 毛振华 摄