In the past history of solar energy development, you can see that in the past ten years, its efficiency has increased by 50%, and its cost has been reduced even more. So, in the history of solar energy development in the past 20 years, including the International Energy Organization, including solar-related organizations, the installed capacity of the second year is predicted every year. I always say that in the past 20 years, no year has been accurate. The "accuracy" I'm talking about is that you can deviate by 10%, so its annual deviation is much greater than that. So what's the result? That is, the speed of development each year has exceeded everyone's forecast for the second year. If we don't talk about the 10-year forecast, it will be even worse, maybe five or ten times worse. What does that tell you? It shows everyone's love for solar energy.
So why do people love solar energy? It is because it has many advantages, and its rapid technological progress over the years has created people's love for solar energy. Its efficiency is constantly improving, its cost is constantly decreasing, and its layout is becoming simpler and simpler. We know that a large power system used to take three or five years, which is very fast, like nuclear power for 10 or 15 years, but a photovoltaic system , if it is a household energy system, you only need 10 or 15 days. It only takes five to six months for a large GW photovoltaic system. Therefore, its layout speed is very fast and very convenient. So I want to say that the core of the rapid development of photovoltaic in the past lies in the progress of technology and the improvement of efficiency.
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