Grid Connection Voltage Levels for Distributed Photovoltaic Power Generation Systems

      Implement differentiated grid connection strategies tailored to each station. Municipal development and reform commissions shall categorize distributed photovoltaic projects into three types: "complete self-consumption," "self-consumption with surplus electricity fed into the grid," and "full grid feed-in," for scientific classification management to enhance consumption capacity. For "complete self-consumption" projects and "self-consumption with surplus electricity fed into the grid" projects with an installed capacity of 8 kW or less, procedures may be simplified, with grid companies providing green channel grid connection services. For "full grid feed-in" projects and "self-consumption with surplus electricity fed into the grid" projects with an installed capacity exceeding 8 kW, comprehensive evaluation based on distribution network planning and grid capacity assessment results shall be conducted. Projects that align with planning and meet capacity requirements may be connected in an orderly manner by grid companies following the corresponding grid connection management procedures.

       Prioritize local and low-voltage grid connections. Encourage distributed photovoltaic investment enterprises to carry out large-scale development of "whole-village contiguous" distributed photovoltaics, support the construction of distributed photovoltaic projects near power loads, and adopt low-voltage local connection methods in areas with dense electricity loads and strong grid infrastructure to achieve local electricity consumption. In principle, distributed photovoltaic projects with an installed capacity of 8 kW or less shall be connected at a voltage level of 220 V; those with 8 to 400 kW shall be connected at 380 V; those with 400 to 6000 kW shall be connected at 10 kV; and those exceeding 6000 kW that cannot be balanced locally may be connected at voltage levels above 10 kV. In areas where low-voltage connection is not feasible, conditions may be improved by converging and boosting voltage to medium- or high-voltage distribution networks or configuring independent energy storage in corresponding substations (transformer zones). Connection shall be arranged after the grid connection system evaluation confirms compliance with grid safety requirements.

     Mangzhong Construction always adheres to the philosophy of "Forging Brilliance Through Quality" and maintains an attitude of "Serving with Heart, Emotion, and Intelligence." With robust technical R&D capabilities in solar power systems, engineering design expertise, and extensive project experience, the company strives to repay the trust placed in it by its clients.

Company Name: Jiangsu Mangzhong Construction Co., Ltd.

Business Scope: EPC for photovoltaic power stations and investment in photovoltaic solar power stations

Company Landline: 025-5888 3737

Mobile Number: 159 5163 4545

Company Website: http://www.mangz.cn