Inverse micro-grid solar power technology approach is an upgraded version, because of its obvious advantages are becoming mainstream and network model, which is generally more pro-American and European users gaze and nets. With traditional string-type grid compared to, although the initial investment cost is slightly higher, but in the long term return on investment, with a significant cost advantage that allows you to obtain higher efficiency power generation systems. Mainly in the power generation efficiency, service life, maintenance costs three aspects: First, micro-and power generation efficiency against the higher average daily prolific power and 20% in the conventional network system, the battery plate is connected in series or parallel connection of into a small cell, in which any lower performance board is a battery will affect the power generation efficiency of the entire unit is unavoidable short-board effect, even with a tracking MPPT inverter can not solve this problem; and In the micro inverse power generation system can be achieved on each battery module performs MPPT tracking, there is no short-board effect, so the inverse micro grid has a higher power generation efficiency. In addition, but also by the impact of line losses, the traditional grid square in the solar panels produce direct current through the long wires connected to a transmission confluence inverter, this long-distance DC transmission will cause great power loss; while the micro-inverse and network inverters are mounted directly on the panels, each panel are generated direct current into alternating current then direct transmission convergence, AC transmission loss smaller. Therefore, even the actual amount of electricity generated, and after practice compared to the same power system capacity, micro inverse way than traditional average electricity production up to 20%. Secondly, the inverse micro grid longer add ROI we know, solar panels and inverters are two main power system components, the service life determines the life of the system. Solar panel design life is 25 years, but the string type and inverter life is far less than 25 years, while the micro-inverter design life is 25 years. Long life to mean a higher return on investment. Again, micro inverse grid stable operation, lower maintenance costs and power generation using micro inverse, a single block of solar panels as power is small, more conducive to stability of the system, not the occurrence of similar large-scale inverter may appear to stop working protection status. Because they are using 220V AC transmission, in addition to reducing losses, but also to avoid fire hazards and other safety issues. From the system stability and security considerations, micro inverse grid more in line with their family. When equipped with the monitoring system, the string type and network users only get a whole generation and fault conditions, while the micro-inverse and network users not only can get power and fault conditions can be further informed that each panel's work, can be targeted to solve the problem. Micro inverse grid users can no technical staff under the guidance of their own to solve the problem quickly, greatly reducing maintenance costs. In addition, the micro inverse grid expansion to facilitate subsequent installation of solar power generation system, the user may need to expand the system capacity, the use of micro-grid mode inverse simply add devices, users can own treatment, to facilitate expansion; And if we adopt group string type and network mode the user must replace the inverter, added costs. Therefore, the micro-grid compared to the inverse string type and nets with higher power generation efficiency, longer life, lower maintenance costs advantages. In the long term, with a very significant price, which will be worth the user pro-gaze and nets. National Grid on solar and other new energy grid Deal has clearly defined users are free to network, more and more families are free to install a solar photovoltaic system. And what kind of way network, is worth the user to think and discern.