1) It is rich in resources and generally has renewable characteristics, which can be used for sustainable use by human beings; for example, the estimated wind resources that can be developed and utilized on land are 253GW, and as of 2003, only 0.57GW was developed and utilized, and in 2010, 4GW can be utilized. , by 2020 to 20GW, and solar PV grid-connected and off-grid applications are expected to increase by 1 to 2 GW from the current 0.03GW by 2020.
2) The energy density is low, and development and utilization require a large space;
3) It contains little carbon or carbon, and has little impact on the environment;
4) Wide distribution, which is conducive to small-scale decentralized use;
5) Intermittent supply, high volatility, unfavorable for continued energy supply;
6) At present, except for hydropower, the development and utilization cost of renewable energy is higher than fossil energy.
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