Definition of new energy

I. New energy is defined as:

New energy, also known as non-conventional energy, refers to various forms of energy other than conventional energy, generally in the new technology based on the development and utilization of renewable energy sources, such as solar energy, geothermal energy, wind energy, ocean energy, biomass energy and nuclear fusion energy.

Two, the characteristics of new energy:

1) resource-rich, generally have renewable characteristics, can be used by mankind forever; for example, onshore wind resources can be developed and utilized is estimated to be 253GW, and as of 2003 only 0.57GW was developed and utilized, and it is expected that by 2010 can be utilized to reach 4GW, to 2020 to 20GW, and the solar energy The amount of grid-connected and off-grid applications of solar PV is expected to increase from 0.03GW to 1 to 2 GW by 2020.

2) Low energy density, development and utilization of which requires a large space;

3) Carbon free or very little carbon, with little impact on the environment;

4) Widely distributed, which is conducive to the decentralized utilization on a small scale;

5) Intermittent supply with high volatility, which is important for the continuous supply of energy. high volatility, unfavorable to the continuous supply of energy;

6) In addition to hydropower, the development and utilization of renewable energy is more costly than fossil energy.