在自家屋顶装个光伏发电设备，不仅可供自家用电，多余的电还可以卖给供电局，你想过吗？惠州仲恺高新区惠环街道办的一位居民就在自家屋顶装了10千瓦的光伏发电设备，理论上每小时可发10度电，这是目前为止惠州装机容量最大的家庭光伏发电。据 计算，平均每年能省1.8万元左右，只要五六年的时间就可以收回9万元的投资成本。

     5日上午，记者来到位于惠环街道办洋里村的一栋居民自建房，这栋搂共有六层，房主李永龙今年在楼顶安装了10千瓦的光伏发电设备，当天，仲恺供电局 的工作人员也来到他家进行中期验收，然后李永龙去供电局领回双向计量电表安装后，他家自己发的电就可以并入电网，多余的电就可以卖给供电局。 

      惠州市民楼顶装太阳能光伏发电，在6楼楼顶，李永龙用钢管搭起了一个2米多高的棚子，棚子上就覆盖了太阳能硅板，总共有40块，每块1米宽，1.66米长，每块硅板价格1000多元，加上其他材料费，全部做好他花了将近9万元，按装机容量10千瓦算，成本每瓦9元左右。 目 前，光伏设备已经装好了10多天，已经开始发电了，记者从墙壁上的三相光伏并网逆变器上看到，总共已经发了853度电，5日当天到早上9点多，也发了6度 多电。李永龙说，10千瓦理论上可以每小时发10度电，但受天气情况影响，平均每小时只能发7度电左右，一天大约可以发10小时，一个月发2000度电左 右。这栋楼除了李永龙一家住外，他还出租了50多个房间和楼下档口，整栋楼平均每个月也要用2000度电，夏季高峰期还会更多。他当时选择安装10千瓦，也是算了下发电量基本可以供他们这栋楼使用，其实他们楼顶还有面积可供安装，只是从成本考虑没装那么多。 除了节省电费外，国家还对光伏发电有补贴，每度电补贴4毛多钱，如果发电量有多余，还可以每度电5毛多钱卖给供电局，这样算起来，李永龙只要五六年的时间就可以收回9万元的投资成本。

Have you ever thought of installing a photovoltaic unit on your roof to not only power your house, but also sell the excess electricity to the power board? A resident of huihuan Street Office in Zhongkai High-tech Zone in Huizhou has installed a 10-kilowatt photovoltaic (PV) device on his roof, which in theory can generate 10 KWH of electricity per hour. It is by far the largest pv installed capacity for a home in Huizhou.According to calculation, the average annual savings of about 18,000 yuan, as long as five or six years can recover the investment cost of 90,000 yuan.

5 in the morning, the reporter arrived at the HuiHuan neighborhood residents of a building in the village since the building, the building fell a total of six floors, homeowners yong-long li was installed on the roof this year 10 mw photovoltaic power generation equipment, on the same day, ZhongKai mid-term examination of power supply bureau staff also came to his house, and then go to the power supply bureau yong-long li claim bidirectional measuring meters installed, His household generates its own electricity and feeds it into the grid, and the surplus is sold to the power board.

Huizhou resident roof installed solar photovoltaic power generation, at the top of the 6th floor, yong-long li with steel tube set up a 2 meters high hut, hut is covered on the solar silicon, a total of 40 blocks, each 1 m wide, 1.66 meters long, each silicon price 1000 yuan, and other materials, all he spent nearly 90000 yuan, according to the installed capacity of 10 mw, The cost is about 9 yuan per watt.Before the eyes, photovoltaic equipment has been installed for more than 10 days, has begun to generate electricity, the reporter saw from the wall of three-phase photovoltaic grid-connected inverter, a total of 853 kilowatt-hours of electricity, the day of the 5th to 9 o 'clock in the morning, also sent more than 6 kilowatt-hours of electricity. Li yonglong said that 10 kilowatts can theoretically generate 10 kilowatts of electricity per hour, but due to weather conditions, the average can only generate about 7 kilowatts per hour, about 10 hours a day, or about 2,000 kilowatts a month. In addition to Mr. Li's family, he rents out more than 50 rooms and downstairs stalls in the building, which uses an average of 2,000 kilowatt-hours of electricity a month, and more during peak summer months. At that time, he chose to install 10 kilowatts, which is basically enough for their building. In fact, they still have space for installation on the roof, but not so much from the cost point of view. In addition to saving electricity bills, the state also has subsidies for photovoltaic power generation, with subsidies of more than 40 cents per kilowatt hour. If there is excess electricity generation, it can also be sold to the power supply bureau for more than 50 cents per kilowatt hour. Thus, Li Yonglong can recover 90,000 yuan of investment costs in five or six years.