{"created":"2021-03-01T06:34:22.513959+00:00","id":17078,"links":{},"metadata":{"_buckets":{"deposit":"125a5c2f-c739-47c8-ae96-6dc3945e4935"},"_deposit":{"id":"17078","owners":[],"pid":{"revision_id":0,"type":"depid","value":"17078"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00017078","sets":["55:864:922:926","9:504:867:924:927"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"An Empirical Study on the Retail Competition in the Japanese Electricity Market after Partial Liberalization (<Featured Theme>Economic Regulation and Industrial Organization in Public Utility with Network Facilities)"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2009-02-16","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3-4","bibliographicPageEnd":"101","bibliographicPageStart":"89","bibliographicVolumeNumber":"60","bibliographic_titles":[{"bibliographic_title":"社會科學研究"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"わが国の電力小売市場は2000年に部分自由化されたが, 一般電気事業者が圧倒的な市場シェアを占めたままで, 競争が有効に働いていないとの懸念がある. 本研究では, 部分自由化後の電力小売価格のデータを用いて, 一般電気事業者の市場支配力とマークアップの関係を分析し, 競争状況に関する考察を行った. その結果, 自家発の存在を考慮した電力市場における一般電気事業者のシェアが大きいほどマークアップが大きくなっており, シェアの大きさと市場支配力の行使には理論と整合的な関係があることを明らかにした. 一方, 電力価格が高ければ, 一般電気事業者のシェアは小さくなるという関係が成立し, 一定の競争が働いていることも確認した. また, マークアップは, 自家発を設置する産業用大口需要家の業種別構成によって差が生じており, 特に, いくつかの業種の需要家から比較的強い競争圧力が働いて, マークアップを抑制することなどを明らかにした.","subitem_description_type":"Abstract"},{"subitem_description":"This paper empirically examines the market power of the incumbent electric utilities in the Japanese electricity retail market after partial liberalization in 2000. Including supply from self-generation facilities of large industrial customers in calculating the market share of the incumbent utility, we estimate the impact of market share on price after controlling the changes in marginal cost. Our results suggest that, as the market share increases, the markup will be greater, which is in line with the theoretical prediction. On the other hand, a higher price leads to a lower market share of the incumbent, suggesting that competition is successful when the price is relatively high. In addition, our results indicate that the markup depends also on the composition of customers by industries.","subitem_description_type":"Abstract"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"27288","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Hattori, Toru"}]}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学社会科学研究所"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00108966","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03873307","subitem_source_identifier_type":"ISSN"}]},"item_4_subject_15":{"attribute_name":"日本十進分類法","attribute_value_mlt":[{"subitem_subject":"300","subitem_subject_scheme":"NDC"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"Institute of Social Science, The University of Tokyo"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"電力中央研究所社会経済研究所"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"服部, 徹"}],"nameIdentifiers":[{"nameIdentifier":"27287","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-06-08"}],"displaytype":"detail","filename":"shk060003006.pdf","filesize":[{"value":"800.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"shk060003006.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/17078/files/shk060003006.pdf"},"version_id":"b683b06a-fc1c-47c1-ad8c-d2401e2824df"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"電力自由化","subitem_subject_scheme":"Other"},{"subitem_subject":"一般電気事業者","subitem_subject_scheme":"Other"},{"subitem_subject":"自家発電","subitem_subject_scheme":"Other"},{"subitem_subject":"電力価格","subitem_subject_scheme":"Other"},{"subitem_subject":"市場支配力","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"部分自由化後の電力小売市場の競争状況に関する実証分析(<特集>ネットワーク型産業における経済規制と産業組織)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"部分自由化後の電力小売市場の競争状況に関する実証分析(<特集>ネットワーク型産業における経済規制と産業組織)"}]},"item_type_id":"4","owner":"1","path":["926","927"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-05-20"},"publish_date":"2011-05-20","publish_status":"0","recid":"17078","relation_version_is_last":true,"title":["部分自由化後の電力小売市場の競争状況に関する実証分析(<特集>ネットワーク型産業における経済規制と産業組織)"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:55:55.049049+00:00"}