How to Increase the Power Output of Residential Distributed Photovoltaic Power Station?

More and more people are building home-based distributed photovoltaic power stations, but the amount of electricity generated varies even with the same installed capacity. So how can you effectively increase the power generation of your rooftop solar system?

First, let's look at the factors that affect solar power generation.

1. Sunlight conditions: Home solar power stations utilize solar energy for power generation. The better the natural light resources, the greater the power generation. In areas with similar sunlight conditions, power stations installed at the optimal tilt angle after preliminary measurement and design will generate significantly more electricity than those installed without such preliminary measurement and design.

2. Product quality:

① Photovoltaic module quality. High-quality photovoltaic modules with high conversion efficiency will naturally generate more electricity.

② Inverter quality. High-quality inverters have high conversion efficiency, resulting in higher power output.

3. Installation quality: Professional and reliable installation services ensure that the modules are installed at the optimal tilt angle, preventing damage to product components and avoiding potential construction hazards, thus preventing subsequent safety issues such as leakage, fire, and lightning strikes. Unprofessional installation may damage product components and even lead to safety problems.

4. Daily operation and maintenance: Dust and obstructions can affect the conversion efficiency of photovoltaic modules, so regularly cleaning the surface of the solar modules helps to increase power generation.

5. After-sales quality assurance: Professional after-sales service can guarantee the service life of the power station, extend the return on investment period, and avoid future worries.

Therefore, based on the above points, if you cannot change the sunlight conditions, here are some ways to outperform 99% of other home solar power station users in terms of power generation:

How to increase the power generation of your home distributed photovoltaic power station?

1. Strictly control the quality of the solar power station.

Photovoltaic modules, inverters, and batteries are not typical consumer products; they have a lifespan of several years or even decades, but their long-term reliability should not be judged solely on appearance. To ensure the quality and long-term reliability of photovoltaic products and components, users can take the following measures:

(1) The most basic measure is to require manufacturers to provide authoritative test and certification reports to ensure that the technical performance of the products submitted for inspection meets technical standards and passes third-party testing, and that mass-produced products are manufactured according to the same standards as the products submitted for inspection;

(2) Since photovoltaic modules and inverters are not short-term consumer goods, they need to be inspected again after one year of operation.  Failures during the "infancy" period must be within the scope stipulated in the contract.

(3) In addition to the quality of products and components, the design and construction of photovoltaic projects are also very important. To ensure project quality, project developers can also entrust qualified and experienced third parties to conduct comprehensive review and supervision of the entire process, including engineering design, construction and installation, and project inspection.

2. Emphasizing the safety of photovoltaic power generation systems to prevent catastrophic accidents

Safety is the most important component of photovoltaic system quality. The safety of photovoltaic systems includes: building safety, grid safety, electric shock prevention, system wind resistance, lightning protection, fire and arc flash protection, theft prevention, and sandstorm protection. Building safety includes building load, leak prevention, protection of insulation layers, and building fire safety. Building safety assessments need to be conducted by professional departments. Distributed photovoltaic systems integrated with buildings should first pass a building safety assessment before construction. Extreme insulation damage can cause parallel circuit arcs, while damage to ground insulation can cause ground arcs. Therefore, if there are quality problems with cables, connectors, contactors, or circuit breakers, or if the engineering installation is not done carefully, arcs may occur and cause fires.

System wind resistance needs to be designed based on the maximum wind speed in the area over the past 30 years. However, it needs to be optimized and balanced among various factors such as array installation angle, annual power generation, building load, land area, and shading. For example, the array tilt angle is directly related to the wind load. An array tilt angle designed to maximize annual power generation may require bearing a greater wind load, thus requiring greater counterweights. Such counterweights may exceed the maximum load that the building can withstand, requiring a change in the array tilt angle to accommodate the building load.  Another example is that a higher tilt angle requires a larger land area, which increases costs. Sometimes the roof area is limited, not allowing for larger spacing between arrays. Therefore, the wind resistance design of the array needs to be tailored to local conditions. 3. Focus on daily operation and maintenance

(1) Choose a manufacturer that provides data monitoring services, allowing you to view power generation data anytime and anywhere, so that problems can be detected and resolved in advance.

(2) Choose a manufacturer that provides after-sales warranty services and regular after-sales inspections.

(3) Strengthen daily cleaning and maintenance to improve the conversion efficiency of photovoltaic modules.