In front of a lot of information about solar energy, people will still be troubled by some rumors. One of the goals of loving PV is to be a solar "rumor terminator" to help you eliminate the incorrect understanding of solar energy. Here are 5 solar rumors you should not believe. Here are 5 solar rumors that you should not believe, focusing on answering cnbeta netizens' question that the energy generated by solar cells cannot compensate for the energy consumed by the production of solar cells.
In front of a lot of information about solar energy, people will still be troubled by some rumors. One of the goals of loving PV is to be a solar "rumor terminator" to help you eliminate the incorrect understanding of solar energy. Here are 5 solar rumors you should not believe.
Myth 1: Solar energy is only suitable for warm areas. The average temperature of an area does not affect solar panels too much.
In fact, the conversion efficiency of solar cells will increase at low temperatures. So, even if you live in a cold area, you can still have enough sunlight on the solar panel. Germany, this northern country (Germany's latitude is equivalent to China's Heilongjiang Province) is not known for its sunshine, but it is the world leader in the use of photovoltaics, with installed capacity in 2009 exceeding 9800MW. The area of ​​the panel used can cover the roof of more than 2 million residential houses.
So, the next time you hear this, you can easily point out that high latitude or low temperature does not mean that solar energy cannot be used in this area.
Myth 2: After installing solar modules, you still need traditional fossil fuels as backup energy.
Almost all of today's solar cells can be connected to the grid. In addition to the electricity generated by the solar panels for home use, the remaining electricity can be sent back to the grid. This actually means that it is possible to reverse the electricity meter at home. More importantly, the house is still connected to the power grid, and the power generated by the power plant can be used when the solar cells cannot reach the maximum power at night or on cloudy days. As long as you install this grid-connected solar power system, there is no need to prepare a spare diesel generator. (Currently there is a lack of corresponding electricity price subsidy policy, FiT).
Rumor three: choosing solar energy is equivalent to giving up modern and comfortable life
After installing the grid-connected solar power system, your home is still connected to the grid, and the electricity generated by solar energy can offset a considerable part of your demand for grid power supply. In this way, you can use electricity day and night without batteries, and you can reduce a large part of the electricity consumption while using household appliances normally.
Rumor 4: Solar energy is not ready for large-scale use
This is perhaps one of the most harmful rumors, because it has caused many owners to postpone the plan to install solar energy. Decades of research and billions of scientific research funds have brought us reliable solar power generation technology. At the same time, governments around the world are encouraging commercial and civilian solar power projects.
Myth 5: Manufacturing solar cells consumes more energy than it can produce
Energy repayment time (Energy Payback TIme, EPBT) is a measure of the time required for the energy generated during the use of solar cells to compensate for the energy consumed during the manufacturing process. The report of the National Renewable Energy Laboratory (NREL) shows that the time for photovoltaic solar modules to recover energy costs varies between 1 and 4 years, depending on the type of battery (the latest Cdte battery EPBT is less than 1 year). Considering that solar cells can continue to work for 30 years, photovoltaic systems can provide zero-emission electricity for 26 to 29 years. Have you heard more rumors about solar energy? Tell Love PV what you want to know, and we will help you identify whether it is "true" or "lie".
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