Compared with conventional energy, new energy has the advantage of ① development potential ② clean and non-polluting ③ most of the recycling ④ low development costs

New energy in our country currently refers to renewable energy and nuclear energy, I think it should be mentioned this way: renewable energy compared with conventional energy, the advantages are:

1, renewable energy resources are greater than conventional energy, conventional energy generally refers to fossil energy (coal, oil, natural gas, etc.) whose reserves are limited. Renewable energy such as solar energy, its resources for the limited stage of human development can be said to be unlimited, the earth received in a year of solar energy up to 8 * 10 ↑ 18kWh, visible in the amount of huge. Wind energy, biomass, ocean energy and other renewable energy are by-products of solar energy, so "everything grows on the sun" is a very good example.

2, clean, very low pollution, can not say no pollution because, after the large-scale use of renewable energy, some of the impact on the environment has not yet shown, such as the Yancheng area, the emergence of large-scale wind farms, for migratory birds may have an impact. However, in general there is no obvious reality of increased pollution.

3, recyclable, which is certain, this is due to the definition of renewable energy itself;

4, the current cost of development is still high, this is mainly because, most of the energy density of renewable energy is relatively low, for example, solar energy per square meter of the theoretical power is only about 1kW, the biomass energy per unit of weight of the calorific value of only less than half of coal ( The calorific value of straw is about 3,000 calories / kg), etc. For low energy density, to form a large-scale effect, only large-scale application, that is, blossoming applications can be achieved. Due to the low energy density of renewable energy sources, their development costs are currently still with conventional energy sources have a certain gap, more mature straw power generation, its feed-in tariffs to be as high as 0.7 ~ 0.8 yuan / kWh in order to make a profit. Continuously reduce the cost of renewable energy development and utilization is the goal of the world's efforts. For photovoltaic power generation, Jiangsu Province, for example, in 2005, we expect the feed-in tariffs to reach at least 5.0 yuan / kWh, when the feed-in tariffs of coal power not more than 0.4 yuan / kWh, and the current feed-in tariffs of photovoltaic power generation in Jiangsu Province, Jiangsu Province, has been significantly reduced to 1.3 yuan / kWh, while the feed-in tariffs of coal power is still hovering around 0.4 yuan / kWh, and the gap between the two is significantly narrowed.