@article{YokoyamaShinanoWakui2022, author = {Ryohei Yokoyama and Yuji Shinano and Tetsuya Wakui}, title = {Day and time aggregations for optimal design of energy supply systems with storage units by a hierarchical MILP method}, journal = {PROCEEDINGS OF ECOS 2022 - THE 35 TH INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS}, pages = {1891 -- 1902}, year = {2022}, note = {in press} }