Which is cheaper: wind power generation or photovoltaic power generation? Wind power is low, wind power costs about 4-5 yuan per watt, and photovoltaic power costs about 7-8 yuan per watt. Low-light photovoltaic panels are cheaper. As photovoltaic power generation technology, especially photovoltaic panels, continues to mature, the application of photovoltaic power generation continues to expand. Photovoltaic power generation is also an emerging industry with good prospects.
Photovoltaic energy production equipment takes up less space and is also suitable for use in cities. Wind power generation equipment should be used in locations with stronger winds, and these locations should be away from large cities.
Detailed information:
Advantages and disadvantages of producing photovoltaic energy:
1. Advantages of photovoltaic power generation
Compared with commonly used thermal power generation systems, the main advantages of photovoltaic power generation are: In:
①No risk exhaustion
②Safe and reliable, no noise, no polluting emissions, absolutely clean (no pollution);
< p>③Not subject to Due to geographical limitations of distribution resources, the benefits of building roofs can be used; for example, areas without electricity and areas with complex terrain④ No need to consume fuel and erect; transmission lines to generate electricity on site;
⑤High power quality;
⑥Easy for users to accept emotionally;
⑦Building periodshort action and short time to obtain energy.
2. Disadvantages of photovoltaic power generation
① The energy distribution density of irradiation is low, that is, it occupies a huge area
② The energy obtained is the same as that of the four seasons, day and night, and it is related to weather conditions such as cloudy and sunny weather.
③ At present, compared with thermal power generation, the cost of electricity generation is high.
④The manufacturing process of photovoltaic panels is not environmentally friendly.
The energy outlook for the Three Gorges is worrying
Wind and photovoltaic power generation are time-sensitive and accidental. If it's cloudy or the wind stops that day, wind and photovoltaic energy. the power needs to be turned off, but the charging cannot be stopped, so thepower grid must immediately start the thermal units to fill the gap, but it will take several hours to start the thermal units completely shut down, so that they can start. To immediately fill the gap, some units must operate at low loads to be able to cope with this situation. However, these capacities are limited, so the power grid must limit wind and photovoltaic energy production based on reserve capacity.
There are two fundamental factors that affect the performances of the Three Gorges. : price of electricity on the network and electricity production.
In terms of grid electricity prices, the national policy is to gradually promote grid parity and reduce subsidies. This is a trend that has also been evident in the Three Gorges prospectus in recent years; For years, onshore wind energy, energyOffshore wind turbines and photovoltaics have prices that vary depending on the resource areas, but the trend is constantly downward!
In prime and high-quality resource areas, the price of grid-connected wind power is even lower than thermal power! In other words, with the advancement of technology, cost reduction and efficiency improvement, there will be no more subsidies for wind power and photovoltaic power in the future, and it will be always profitable to achieve network parity.
Also, this kind of thing won't happen overnight. The price of Internet access continues to fall, but the annual rate is lower; the last two years have been the peak of wind and photovoltaic energy, because at the end of this year, the completed projects still receive subsidies.
In terms of electricity production, in the first half of this yearborn, Three Gorges Energy's electricity production increased by 44% compared to last year, thanks to the commissioning of its ever-expanding new projects. According to Three Gorges Energy's five-year plan, the installed capacity will reach 70-80 GW by 2025, and the installed capacity in 2020 will be about 16 GW, that is, by 2025, the capacity total will be 4 to 5 times higher. of the current one, and the average annual installed capacity will be around 15 GW, which represents almost another Three Gorges each year!
However, despite Three Gorges Energy's promising future prospects, we should still avoid stocks that are trending lower after stock price speculation. It will be much safer to wait until the stock price emerges from the gold abyss and the trend reverses before buying. There must be a margin of safety. There are good companies in the market. It is better to passnext to chasing high prices.
1. Trois Gorges Energie, how to analyze the trend?
Three Gorges Energy, in addition to doubling its prices during its initial public offering, remained unmoved when the power sector was booming in August and September. This prompted investors to bet on this new energy stock. are very distressed and do not understand why the stock price is not increasing even though the company is excellent and the concept is very popular. Nowadays, the popularity of the electricity sector has declined significantly, and many energy stocks have returned more than half of it. Looking at Three Gorges Energy, it continues to rise unhurriedly, but at least it still reaches new heights. , one step at a time. This is for job holders. It's a bit of a consolation.