The photovoltaic power station market is experiencing explosive growth, but roof suitability assessment is crucial

    With the significant decline in silicon material prices, the photovoltaic power plant market has ushered in unprecedented development opportunities. Many projects

that were stalled due to high costs have been restarted, driving the rapid growth of solar power installed capacity nationwide. According to the latest data from the

National Energy Administration, the installed capacity of solar power generation in China has reached about 609 million kilowatts in 2023, with a year-on-year growth

rate of 55.2%, ranking first in the growth rate of various types of energy generation.

     However, the construction of commercial photovoltaic power plants is not achieved overnight, especially for roof installation, which requires strict preliminary

evaluation and planning to ensure the feasibility and long-term benefits of the project. The following are several key evaluation elements that require high attention:

1. Clear property rights of building roofs

    Clear ownership of the roof property is a prerequisite for project initiation. For non self owned roofs, it is necessary to verify the property rights relationship to

ensure no disputes, especially for public buildings such as government agencies, schools, and hospitals, whose property rights are more stable and suitable for

development.

2. Matching the lifespan of the roof with the operational cycle of the photovoltaic power station

    The design life of photovoltaic power plants is usually 25 years, and the remaining service life of the roof is required to be at least equivalent to it. It is generally

recommended to exceed 20 years to ensure investment return.

3. Comprehensive assessment of roof load capacity

    Detailed calculations including constant loads (such as structural self weight, photovoltaic module weight) and variable loads (such as wind loads, snow loads,

earthquake loads, etc.). It is necessary to accurately estimate the load increase based on the type of roof structure (such as steel structure, brick concrete structure)

to ensure structural safety.

4. Analysis of Electricity Demand and Price

    The economic viability of commercial photovoltaic power generation is highly dependent on electricity consumption and price levels. The overlap between high

electricity price periods and photovoltaic power generation periods, as well as the proportion of spontaneous self use, are key indicators for evaluating investment

value. For high energy consuming enterprises, photovoltaic power generation can not only reduce energy consumption costs, but also help achieve energy

consumption targets.

5. Investigation of Power Grid Environment and Health

   The quality of the power grid directly affects the operational efficiency and stability of the photovoltaic system. Special attention should be paid to issues such as

harmonics and unbalanced negative sequence components in the power grid, and power quality control measures should be taken if necessary. At the same time,

plan the grid connection points reasonably, reduce AC line losses, and improve system efficiency.

6. Optimization of distribution facilities and grid connection schemes

    Develop a reasonable grid connection plan based on the current status of distribution facilities such as transformer capacity and quantity in the factory area.

Although the new standard has relaxed the ratio limit between photovoltaic capacity and transformer capacity, it is generally recommended that photovoltaic

capacity not exceed 70% of transformer capacity to ensure power quality. At the same time, single point grid connection or multi-point grid connection schemes

can be selected according to the actual situation.

   Professional service provider for industrial and commercial power stations

   Zhongbu Qingtian New Energy (Hubei) Co., Ltd. is a high-tech enterprise engaged in the new energy industry. It has established a team of experienced professionals

dedicated to providing full process services for the investment, construction, and operation of industrial and commercial photovoltaic power plants. With years of

industry experience, we have established strategic partnerships with provincial energy groups, provincial design institutes, and various financial institutions to jointly

promote the optimization and improvement of the energy supply chain; And continuously deepen, deepen cooperation with leading enterprises such as GCL, Longi,

Far East Cable, Huawei, Sunshine Power, etc., continuously expand business areas, enhance the stability and reliability of the supply chain, and build a complete and

efficient supply chain system. At present, the company has qualifications such as Level 2 general contracting for power engineering construction, installation

(repair, testing) of power facilities license, safety production license, etc. There are 3 Level 1 construction engineers for mechanical and electrical engineering, more

than 10 Level 2 construction engineers for mechanical and electrical engineering, and more than 30 certified high and low voltage electricians. Since its

establishment, Heguang Qingtian New Energy has connected more than 50MW of photovoltaic general contracting projects to the grid, forming a high influence in

the industry and receiving high praise from owners and suppliers.