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)光伏发电具有经济优势

(1) Photovoltaic power generation has economic advantages

可以从两个方面看太阳能利用的经济性：一是太阳能取之不尽，用之不竭，而且在接收太阳能时不征收任何“税”，可以随地取用；二是在目前的技术发展水平下，有些太阳能的利用已具经济性。随着科技的发展以及人类开发利用太阳能技术的突破，太阳能利用的经济性将会更加明显。如果说20世纪是石油的世纪，那么21世纪则是可再生能源的世纪（太阳能的世纪）。

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).

从太阳能光伏发电站建设成本来看，随着太阳能光伏发电的大规模应用和推广，尤其是上游晶体硅产业和光伏发电技术的日趋成熟，建筑房顶、外墙等平台的复合开发利用，每千瓦太阳能光伏发电的建设成本越来越低，相比其他可再生能源已具有同样的经济优势，而且随着平价的政策推行，其普及会越来越广。

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)太阳能是取之不尽的可再生能源

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

根据计算，一年内到达地球表面的太阳能总量折合标准煤共约1.892x10^24吨，是目前世界主要能源探明储量的1万倍。太阳的寿命至少尚有40亿年，相对于人类历史来说，太阳能可源源不断供给地球的时间可以说是无限的，这就决定了开发利用太阳能将是人类解决常规能源匮乏、枯竭的有效途径。

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)对环境没有污染

(3) No pollution to the environment

太阳能像风能、潮汐能等洁净能源一样，其开发利用时几乎不产生任何污染，加之其储量的无限性，是人类理想的替代能源。由于传统化石燃料（煤、石油和天然气）在使用过程中排出大量的有毒有害物质，会对水、土壤和大气造成严重污染，形成温室效应和酸雨，严重危害人类的生存环境和身体健康，因此急需开发出新的比较清洁的替代能源，而太阳能作为一种比较理想的清洁能源，正受到世界各国的日益重视。

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.

从目前各种发电方式的碳排放率(g/kW·h)来看，不计算其上游环节：煤发电为275g/kW·h,油发电为204g/kW·h,天然气发电为181g/kW·h,风力发电为20g/kW·h,而太阳能光伏发电则接近零排放。并且，在发电过程中没有废渣、废料、废水、废气排出，没有噪声，不产生对人体有害的物质，不会污染环境。

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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