40KW Rooftop Distributed Power System, Brazil

1、 Project Background: Milestones in Brazil's Energy Transition

In 2019, the Brazilian electricity market is in a critical period of renewable energy expansion. As one of the countries with the highest proportion of hydropower in the world, Brazil is accelerating its transformation towards wind and solar energy, with plans to increase the proportion of renewable energy to 45% by 2030. In this context, PWSOLAR successfully deployed a 40KW Grid Tie Solar System in an industrial park in Brazil, becoming a benchmark project for local industrial and commercial photovoltaic applications. The system uses 380 watt monocrystalline solar panels and achieves efficient power generation through grid connected technology, providing a replicable solution for the development of clean energy in Brazil.

2、 Technical solution: Core advantages of 380 watt monocrystalline modules

（1） Component selection: Balancing high power and reliability

The project uses 380 watt monocrystalline solar panels, whose core features include:

High efficiency: Single crystal PERC technology ensures module efficiency of over 21%, with more crystal modules increasing by 15%;

Low attenuation: The attenuation rate in the first year is ≤ 2%, and in subsequent years it is ≤ 0.45%. The power output retention rate exceeds 80% for 25 years;

Environmental adaptability: Tested in Brazil's humid and hot climate, it has excellent resistance to salt spray and PID.

（2） System Design: Intelligent Grid Connection and Efficient Operation and Maintenance

Inverter configuration: Adopting a three-phase series inverter with a maximum efficiency of 98.6%, supporting MPPT tracking;

Monitoring System: Integrated with an intelligent cloud platform, real-time monitoring of parameters such as power generation and component temperature, with a fault warning response time of less than 1 hour;

Structural design: Adopting a lightweight support system, suitable for the windy environment in Brazil, with a wind resistance capacity of up to 160km/h.

3、 Project Implementation: Collaboration between Localization and Efficiency

（1） Localized cooperation

The project collaborated with a local EPC company in Brazil to shorten the approval cycle to 3 months, reducing the industry average time by 40%. Through modular design, on-site installation only takes 5 days, significantly reducing labor costs.

（2） Economic analysis

Power generation revenue: The annual average power generation reaches 68000 kWh, meeting 20% of the park's electricity demand and saving approximately $12000 in electricity bills annually;

Investment payback period: Static payback period of 6.8 years, dynamic payback period of 7.5 years, in line with the expected return of Brazilian industrial and commercial photovoltaic projects.

4、 Project outcome: Win win situation of environmental and social benefits

（1） Environmental benefits

Emission reduction contribution: reducing carbon dioxide emissions by 54 tons annually, equivalent to planting 3000 trees;

Energy substitution: Reduce the use of diesel generators and lower noise pollution in the park.

（2） Social benefits

Training several local technical personnel for the project to enhance Brazil's photovoltaic operation and maintenance capabilities;

Promote surrounding enterprises to follow suit.

5、 Experience summary: The key to success in the Brazilian market

（1） Technical adaptability

The 380 watt single crystal module performed stably in the high temperature and high humidity environment of Brazil, with an annual power generation exceeding the design value by 5%, verifying the tropical adaptability of high-power modules.

（2） Policy synergy

The project fully utilizes the tax incentives of Brazil's "Investment Partner Program", reduces initial investment costs, and reflects the positive interaction between policies and the market.

6、 Outlook: Deeply cultivating the Brazilian photovoltaic market

This project has established a technical reputation for PWSOLAR in the Brazilian market. In the future, the company will focus on layout:

Product upgrade: Develop 600W+monocrystalline modules to meet the needs of large photovoltaic power plants in Brazil;

Mode innovation: Promote the comprehensive solution of "photovoltaic+energy storage" to cope with fluctuations in the Brazilian power grid;

Deepening cooperation: Establishing joint ventures with local Brazilian enterprises to accelerate market penetration.

The 2019 Brazil 40KW Grid Tie Solar System project is not only a milestone for us in overseas markets, but also a vivid practice of China's photovoltaic technology helping the global energy transition. Through the innovative application of 380 watt monocrystalline modules, the project has achieved the unity of economy, reliability, and environmental benefits, providing a replicable successful paradigm for the photovoltaic market in Brazil and even globally.

Core electrical performance parameters of 380 watt single crystal module

The following parameters are based on Standard Test Conditions (STC): irradiance of 1000W/m ², ambient temperature of 25 ℃, spectrum AM1.5 4. Peak Power (Pmax): 380 Wp 3 Peak Operating Voltage (Vmpp): Approximately 34.9 V 3 Peak Operating Current (Impp): Approximately 10.89 A 3 Open Circuit Voltage (Voc): Approximately 41.9 V 3 Short Circuit Current (Isc): Approximately 11.51 A 3 Physical and Mechanical Characteristics Component Type: Monocrystalline Silicon 3 Technology: Back Passivation (PERC) Technology 3 Size: Approximately 1755 x 1038 x 35 mm (length x width x thickness) 3 Glass Thickness: 3.2 mm 3 Weight: Approximately 19.5 kg 3 Number of Cells: 120 Cells 3 Temperature and Efficiency Characteristics Temperature Coefficient (Pmax): Approximately -0.35%/° C 3 Component Efficiency: Approximately 19.22% -20.86% 3 Mass Guarantee product quality: 12 years 3 power output guarantee: not less than 84.8% of the initial power after 25 years

Welcome more Brazilian companies to cooperate with us in depth, and we will continue to provide high-quality products to you as always.