2022年1月18日，由浙江舟山供电公司自主研发建造的浙江省首个“不拆瓦”光伏建筑一体化屋顶光伏项目正式投运，该项目既能提升屋顶面积利用率，又能保留屋顶彩钢瓦以节约施工成本，有效降低高空作业风险，极具推广建设潜力。
On January 18, 2022, the first "no tile removal" building-photovoltaic integrated project in Zhejiang Province, independently developed and constructed by State Grid Zhoushan Power Supply Company, officially put into operation. This project can not only improve the utilization rate of roof area, but also retain color steel tiles on the rooftop, effectively reduce the risk of working at heights and has widely promotion potential.
据悉，该项目位于舟山市万邦船舶重工有限公司，在整体并网后预计每年发电可达650万千瓦时，相当于节省原煤消耗2626吨、减少二氧化碳近5148吨，每年可帮助企业节约电费302.7万元，为舟山清洁能源发展贡献力量。
The project is located in IMC Shipping (Zhoushan) Co.,Ltd..And after the grid connection, it is expected to generate 6.5 million kWh of electricity per year, which is equivalent to saving 2,626 tons of raw coal consumption and nearly 5,148 tons of carbon dioxide emission, save over 3 million yuan in electricity bills every year for the enterprise, and contribute to the development of clean energy in Zhoushan.
舟山拥有1300多小时的太阳能年利用时间，是浙江日照条件最好的地区之一。历经多次技术变革与工艺进化，光伏发电在舟山已成为构建新型电力系统的重要清洁能源。
Zhoushan has more than 1,300 hours of annual solar energy utilization, one of the best sunshine conditions in Zhejiang. After several round of technological evolution, photovoltaic power generation has become an important clean energy source for building the new type of power system in Zhoushan.
据了解，传统的太阳能光伏发电系统需附着在建筑物屋顶，通过砌筑水泥墩，安装固定光伏板支架，对建筑屋顶承重能力有较高要求。据统计，一平方米太阳能光伏发电系统光伏板需砌筑2个水泥墩合计重量超过500斤，在此基础上叠加光伏板及其支架的自身重量，累计重量约600斤，这极大程度地限制了屋顶光伏的应用范围。
The traditional photovoltaic power generation system needs to be attached to the rooftop of the building, by building cement piers and installing photovoltaic panel brackets, which requires high load-bearing capacity of the building rooftop. According to statistics, one square meter of photovoltaic panels needs to build two cement piers with a total weight of more than 250 kg. On this basis, the weight of the photovoltaic panels and their brackets is about 300 kg, which greatly limits the application scope of rooftop photovoltaics.
与时俱进，建筑光伏一体化系统应运而生。该技术利用光伏组件代替部分建筑材料，将光伏系统支撑结构与建筑物结构巧妙结合、融为一体，在提升光伏设施安全稳定性的基础上，促进建筑构件材料保温隔热功能与光伏发电功能有机融合，通过吸收太阳能转换为电能，起到降低屋顶墙面升温、改善室内温度、减少建筑能耗等节能环保的积极作用。同时，建筑光伏一体化系统设有一套完整的屋顶排水系统，让建筑屋顶与光伏组件实现同等产品寿命，确保在自然条件下25年以上的使用年限，进一步减少屋顶彩钢瓦维修更换费用。此外，建筑光伏一体化系统采用光伏板平铺屋面的方式，促进屋顶面积利用率提高70%以上，成倍式增加发电装机容量，颠覆了光伏板倾斜式安装模式，进一步提升建筑物外部结构的一体化美感。
Keeping pace with the times, the building-photovoltaic integrated system came into being. This technology uses photovoltaic modules to replace certain building materials, and combines the photovoltaic system support structure with the building structure. On the basis of improving the safety and stability of photovoltaic facilities, it promotes the integration of thermal insulation components of the building and photovoltaic power generation functions. By absorbing solar energy and converting it into electrical energy, it can play an active role in energy conservation and environmental protection such as reducing the temperature of roofs and walls, improving indoor temperature, and reducing building energy consumption. At the same time, the building-photovoltaic integrated system is equipped with a complete roof drainage system, so that the building roof and photovoltaic modules can achieve the same product life, ensure a service life of more than 25 years under natural conditions, to further reduce the maintenance and replacement costs of roof color steel tiles. In addition, the building-photovoltaic integrated system adopts the method of tiling the photovoltaic panels on the rooftop, which increases the utilization rate by more than 70%, doubles the installed capacity of power generation, compared to the traditional inclined installation mode, and further beautifies the external image of the building.
相比新建建筑铺设新型光伏屋顶的长期性经济优势，对于已建厂房而言，建筑光伏一体化系统前期准备工作中原彩钢瓦屋顶的拆除费用也不容小觑。以舟山万邦船厂为例，10560平方米屋顶面积，彩钢瓦拆除费用约100万，在整体项目中费用占比12.7%。这也直接导致建筑光伏一体化系统在市场推广过程中困难重重。
Compared with the long-term economic advantages of laying a new photovoltaic rooftop in new buildings, the cost of removing the original color steel tiles on the rooftop is expensive. Taking IMC Shipping (Zhoushan) Co.,Ltd. as an example, with a roofop area of 10,560 square meters, the cost of removing color steel tiles is about 1 million yuan, about 12.7% of the overall project cost, which is frequently encountered difficulty in the market promotion of building-photovoltaic integrated systems.
直击痛点，浙江舟山供电公司创新研发“不拆瓦”建筑光伏一体化系统安装工艺，以“填平”的彩钢瓦屋顶为基础铺设排水系统，并利用穿透彩钢瓦，将光伏板支架与屋顶钢结构牢固连接。一方面，能有效节省约30%的安装成本，提升建筑光伏一体化项目整体经济性、适用性；另一方面，“不拆瓦”意味着大幅降低高空作业的安全风险，不仅减少了施工难度，而且避免了企业停工进行建筑光伏一体化项目作业的损失，促进屋顶光伏项目签约率持续提升。
Thus, State Grid Zhoushan Power Supply Company innovatively developed the "no tile removal" building-photovoltaic integrated system installation method, which is to lay a drainage system based on the "filled-in" color steel tile roofop, and install the photovoltaic panels by penetrating color steel tiles to make the bracket firmly connected to the rooftop steel structure. On the one hand, it can save about 30% of the installation cost; on the other hand, "no tile removal" means that not only the reduction of safety risks of working at heights and the difficulties of construction work, and also avoid the loss of the enterprises during the construction process, which will greatly promote the rooftop photovoltaic projects in Zhoushan.
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