The research on economic effects of feed-in tariffs and support schemes for photovoltaic grid integration

本研究考察了德国和日本对风电和光伏发电上网电价和大规模并网的支持方案。1)根据《德国可再生能源法》，德国电网运营商有义务优先接入可再生电力，并有义务扩大电网，以最大限度地接入可再生电力。2)我们研究了日本在未来15年内将280 TWh的电力从核能转移到可再生能源的情景。可再生能源的投资和天然气进口减少带来的节能效果在第14年可以达到平衡。3)研究考察了德国50赫兹区域的风能和光伏能的馈入数据。约90%的风力发电容量和99%的光伏发电容量在110 kV或更低电压水平下并入并馈入配电网。50赫兹通过其联络线将最大量的电力传输到TenneT区。

This research examined the support schemes for feed-in tariffs and large-scale grid integration of wind and photovoltaic energy (PV) in Germany and Japan. 1) Under the German Renewable Energy Act, German grid operators are obliged to give a priority feed-in of renewable electricity, and are obliged to expand the grid in order to feed-in maximum amount of renewable electricity. 2) We examined a scenario for shifting 280TWh of electricity from nuclear power to renewable energy in the next fifteen years in Japan. The investments for renewable energy and the saving effects due to a decreased import of natural gas can make a balance in the 14th year. 3) The research examined feed-in data of wind and PV energy in 50Hertz zone in Germany. Around 90 % of wind power capacity and 99% of PV capacity is integrated into and fed into the distribution grid at 110kV level or the lower-voltage levels. 50Hertz transfers the maximum a mount of electricity to the TenneT zone through its tie-lines.