| Popis: |
Wind power development is one of the main approaches and effective means to meet with the energy need. However, the negative environmental impacts by the production of wind power equipment and the construction phase of wind farm are also very pressing. In this paper, a 100 MW onshore wind farm in a coastal city in the Southeast China is taken as an example to quantify the environmental impacts measured by greenhouse gases emission, GHGs emission over its life cycle including the wind turbine production, transportation, wind farm facilities construction, operation and maintenance. The results show that the total GHGs emission of a 100 MW wind farm is approximately 90 000 tCO2 eq, and the emission intensity is about 17.8 gCO2 eq/(kW·h)), of which the emission during the stage of manufacturing accounts for the largest proportion (67.8%), followed by that during the construction stage (19.2%). Though the GHGs emission intensity of wind power is significantly higher than that of hydropower (about 3.5 gCO2 eq/(kW·h)), its GHGs emission reduction benefits are more significant over those of other power generation projects, such as photovoltaic power generation (about 50 gCO2 eq/(kW·h)), biomass (about 200 gCO2 eq/(kW·h)) and thermal power (about 800 gCO2 eq/(kW·h)). |
