A summary by Professor Hidefumi Kurasaka of the Graduate School of Humanities and Social Sciences, Chiba University and the Institute for Environmental Energy Policy revealed that domestic renewable energy supply has doubled in the four years until the end of March 2016.Among them, solar power generation accounts for more than half of the total renewable energy, but the growth rate is slowing down.
According to Chiba University, the renewable energy supply as of the end of March 2016
■ Solar power generation 37 tera joules (TJ, * 3,380)
■ Wind power generation 5 TJ
■ Geothermal power generation 2TJ
■ Small hydropower (1 kW or less) 13 TJ
■ Biomass power generation 3 TJ
-A total of 61 TJ.It increased by 3,953% compared to the previous year and increased by 24.7% compared to March 2012.
Of these, 37.2% of solar power generation and 75.1% of biomass power generation showed a significant increase, but the growth of solar power generation has slowed compared to the past two years, which showed an increase of 52.3 to 110%. ..
On the other hand, the use of renewable energy heat
■ Solar heat 3TJ
■ Geothermal 2 TJ
■ Biomass heat 1TJ
-A total of 6 TJ.It decreased by 7,292% compared to the previous year, and decreased by 1.2% compared to March 2012.
As of the end of March 2016, the number of local governments that use renewable energy to exceed the demand for energy for civilian and agricultural water in the region, which Professor Kurasaka and others call a "permanent zone," has increased by nine from the previous year to 3 groups. bottom.
Professor Kurasaka told the report, "The feed-in tariff system introduced in July 2012 has increased the number of solar power generation more than seven times in four years, and the introduction of renewable energy power generation in Japan is progressing nationwide. However, the heat supply of renewable energy such as solar hot water supply, which is not covered by this system, has decreased for the first time in the last 7 years for the second consecutive year. A mechanism to promote the supply of renewable energy is needed. ".
* 1 Terra Jules Joule is a unit of heat, and Terra is 10 to the 12th power.Generally, in energy statistics, various energy sources with different units of measurement are treated in one table, so they are converted into calorie units.
