Prefatory note : Blessing and Calamity of the Sun / Jiro OHNO
Featured article Ⅰ : Technology Trends in MLPE （Module Level Power Electronics） and SLPE （String Level Power Electronics） of Photovoltaic Power Generation Systems
Purpose of this feature / Kazuhiko KATO
Advantages and current topics of Module Level Power Electronics（MLPE）/ Michihiko INABA
Realization of one supply and demand type model by the microinverter technology / Keiichi NAMBA
MLPE, its advantages and market status － with a focusing on SolarEdge System / Ken NAGASAWA
Optimizing PV system by using Ampt-string optimizer and its effect / Shigeki KONDO
Tigo’s MLPE Improves Efficiency and Safety of PV systems / Hiroshi AMANO
Featured article Ⅱ : Recent Advances of Thermal Storage Technologies
Purpose of this feature / Atsushi AKISAWA
Development Trend of Latent Heat Thermal Energy Storage Technology / Satoshi HIRANO
Utilization of un-used thermal energy by thermo-chemical energy storage / Junichi RYU
Utilization of unused heat for agriculture by latent heat storage material / Tetsuji Jozuka
Development of off-line heat transport technology using chemical heat storage / Yusuke HORII
Solar District Heating and Seasonal Heat Storage in Denmark / Hironao MATSUBARA
Research paper
Power forecast of regional large-scale photovoltaics by SV method model with snow loss / Takahiro SASAKI and Yuzuru UEDA
Electric Power Generation Characteristics of Three-Dimensional Fibonacci Number Photovoltaic Modules（FPMs）and Its Effective Cell Configuration / Yuki MOCHIZUKI and Toshiaki YACHI
