By comparing and analyzing several common new energy sources such as biomass energy, hydro energy, wind energy, and solar energy, it is clear that solar power generation has the following unique advantages.

(1)光伏發電具有經濟優勢

(1) Photovoltaic power generation has economic advantages

可以從兩個方面看太陽能利用的經濟性：一是太陽能取之不盡，用之不竭，而且在接收太陽能時不征收任何“稅”，可以隨地取用；二是在目前的技術發展水平下，有些太陽能的利用已具經濟性。隨著科技的發展以及人類開發利用太陽能技術的突破，太陽能利用的經濟性將會更加明顯。如果說20世紀是石油的世紀，那么21世紀則是可再生能源的世紀（太陽能的世紀）。

The economy of solar energy utilization can be seen from two aspects: firstly, solar energy is inexhaustible, and there is no "tax" on receiving solar energy, which can be used anywhere; Secondly, at the current level of technological development, the utilization of some solar energy has become economically viable. With the development of technology and breakthroughs in human development and utilization of solar energy technology, the economic benefits of solar energy utilization will become more apparent. If the 20th century is the century of oil, then the 21st century is the century of renewable energy (the century of solar energy).

從太陽能光伏發電站建設成本來看，隨著太陽能光伏發電的大規模應用和推廣，尤其是上游晶體硅產業和光伏發電技術的日趨成熟，建筑房頂、外墻等平臺的復合開發利用，每千瓦太陽能光伏發電的建設成本越來越低，相比其他可再生能源已具有同樣的經濟優勢，而且隨著平價的政策推行，其普及會越來越廣。

From the perspective of the construction cost of solar photovoltaic power stations, with the large-scale application and promotion of solar photovoltaic power generation, especially the increasingly mature upstream crystalline silicon industry and photovoltaic power generation technology, the composite development and utilization of building roofs, exterior walls, and other platforms, the construction cost of solar photovoltaic power generation per kilowatt is becoming lower and lower. Compared with other renewable energy sources, it has the same economic advantages, and with the implementation of national affordable policies, Its popularization will become increasingly widespread.

(2)太陽能是取之不盡的可再生能源

(2) Solar energy is an inexhaustible source of renewable energy

根據計算，一年內到達地球表面的太陽能總量折合標準煤共約1.892x10^24噸，是目前世界主要能源探明儲量的1萬倍。太陽的壽命至少尚有40億年，相對于人類歷史來說，太陽能可源源不斷供給地球的時間可以說是無限的，這就決定了開發利用太陽能將是人類解決常規能源匱乏、枯竭的有效途徑。

According to calculations, the total amount of solar energy reaching the Earth's surface within a year is approximately 1.892x10 ^ 24 tons of standard coal, which is 10000 times the proven reserves of the world's main energy sources. The lifespan of the sun is at least 4 billion years, and compared to human history, the continuous supply of solar energy to the Earth can be said to be infinite. This determines that the development and utilization of solar energy will be the most effective way for humanity to solve the shortage and depletion of conventional energy.

(3)對環境沒有污染

(3) No pollution to the environment

太陽能像風能、潮汐能等潔凈能源一樣，其開發利用時幾乎不產生任何污染，加之其儲量的無限性，是人類理想的替代能源。由于傳統化石燃料（煤、石油和天然氣）在使用過程中排出大量的有毒有害物質，會對水、土壤和大氣造成嚴重污染，形成溫室效應和酸雨，嚴重危害人類的生存環境和身體健康，因此急需開發出新的比較清潔的替代能源，而太陽能作為一種比較理想的清潔能源，正受到世界各國的日益重視。

Solar energy, like clean energy such as wind energy and tidal energy, produces almost no pollution during its development and utilization. In addition, its unlimited reserves make it an ideal alternative energy source for humanity. Due to the large amount of toxic and harmful substances emitted by traditional fossil fuels (coal, oil, and natural gas) during their use, they can cause serious pollution to water, soil, and atmosphere, forming a greenhouse effect and acid rain, seriously endangering human living environment and physical health. Therefore, there is an urgent need to develop new and cleaner alternative energy sources. As a relatively ideal clean energy source, solar energy is receiving increasing attention from countries around the world.

從目前各種發電方式的碳排放率(g/kW·h)來看，不計算其上游環節：煤發電為275g/kW·h,油發電為204g/kW·h,天然氣發電為181g/kW·h,風力發電為20g/kW·h,而太陽能光伏發電則接近零排放。并且，在發電過程中沒有廢渣、廢料、廢水、廢氣排出，沒有噪聲，不產生對人體有害的物質，不會污染環境。

From the current carbon emission rates (g/kW · h) of various power generation methods, excluding their upstream links: coal power generation is 275g/kW · h, oil power generation is 204g/kW · h, natural gas power generation is 181g/kW · h, wind power generation is 20g/kW · h, and solar photovoltaic power generation is close to zero emissions. Moreover, during the power generation process, there is no discharge of waste residue, waste, wastewater, or exhaust gas, no noise, no harmful substances to human health, and no environmental pollution.

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