Energy Internet opens up distributed photovoltaic meridians
Photovoltaic, short for solar power systems, refers to a modern method of generating electricity by directly converting sunlight into electrical energy through the photovoltaic effect in semiconductor materials. These systems can operate independently or be connected to the grid, offering flexibility and efficiency in energy production.
Solar photovoltaic systems are typically categorized into two types: centralized and distributed. Centralized systems involve large-scale installations, such as the vast photovoltaic farms in the northwest regions of China. On the other hand, distributed systems are smaller, usually under 6 MW, and include applications like rooftop solar panels on industrial buildings, commercial spaces, and residential homes.
The photovoltaic effect, commonly known as PV, is the process where light striking a semiconductor or a semiconductor-metal combination creates an uneven electric potential. This phenomenon is widely used in solar technology, where solar panels made from materials like silicon convert sunlight into direct current (DC) electricity. Solar cells, found in everyday devices like calculators and streetlights, are a prime example of this technology.
Photovoltaic technology offers several advantages, including the absence of moving parts, no need for additional fuel beyond sunlight, and the ability to function efficiently even in indirect light. Its adaptability makes it suitable for installation on rooftops, open spaces, and various urban environments. Since its first application in space satellites in 1958, photovoltaics have evolved to power everything from parking meters to massive solar farms worldwide.
The global solar market has experienced rapid growth over the past decade, with an average annual growth rate of 47.4% in installed capacity. From 598 MW in 2003, the market expanded to 2,826 MW in 2007, and it is expected to reach 9,917 MW by 2012. The industry's revenue is also projected to rise significantly, from $17.2 billion in 2007 to $39.5 billion by 2012. This expansion is driven by rising demand, supportive feed-in tariffs, and government incentives.
Many countries, including Germany, Italy, Spain, the U.S., France, and South Korea, offer financial incentives such as tax rebates and credits to promote solar adoption. However, traditional utility companies may resist these changes, lobbying against policies that could disrupt their business models. Despite these challenges, governments are increasingly turning to solar energy to reduce reliance on imported fuels and address environmental concerns related to fossil fuels.
To encourage renewable energy development, many nations have implemented policies such as capital cost tax rebates and mandatory feed-in tariffs. These programs help offset initial investment costs and guarantee payment for generated electricity, creating a stable environment for the solar industry to thrive.
In 2017, the distributed photovoltaic sector was expected to see significant growth, with China's installed capacity potentially reaching nearly 8 GW. While the sector showed promise, it still faced challenges like resource identification, financing, grid connection, and payment collection. Innovations like the Energy Internet and big data platforms are now helping to overcome these obstacles.
Companies like Beijing Dongrun Qingneng and Beijing Energy Cube Data are leveraging advanced technologies to improve the efficiency of distributed solar projects. By using satellite data, geographic information, and AI-driven analytics, they can identify high-potential sites and provide integrated financial and operational support to project owners.
Energy Rubik’s Cube, for instance, has scanned over 1.2 million rooftops across major Chinese cities, covering more than 1.3 billion square meters. The platform partners with leading companies and government entities to streamline the development and management of distributed photovoltaic projects.
With the help of satellite telemetry, weather forecasting, and big data analysis, Energy Rubik’s Cube can accurately predict future energy generation and electricity demand, enabling investors to make informed decisions. This technology helps identify the most valuable resources, ensuring long-term profitability and sustainability in the solar energy sector.
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