Draft:GreenDEC

GreenDEC
ManufacturerKawasaki Railcar Manufacturing

The GreenDEC is a series of diesel–electric multiple unit (DEMU) railcars designed, manufactured, and marketed by the Japanese rolling stock manufacturer Kawasaki Railcar Manufacturing.

Background and design

Kawasaki Heavy Industries states that approximately 30% of Japan's rail network is unelectrified, much of which is operated using railcars with hydraulic transmissions. While mechanically simpler than diesel–electric powertrains, these often require bespoke parts such as transmissions.[1] Diesel–electric railcars consequently gained prominence due to parts commonality with electric multiple units (EMUs).[2]

In January 2026, electrical equipment manufacturer Toyo Denki [ja] announced that it was selected to provide various components for the GreenDEC, including traction systems and auxiliary power supplies.[3]

Operators

Amagi Railway

In October 2025, the third-sector railway operator Amagi Railway announced its plans to procure eight GreenDEC cars, designated as ARe500 (ARe500形), to replace its pre-existing fleet of AR300 and AR400 railcars introduced between 2001 and 2006.[4][2] Amagi Railway plans to introduce one ARe500 car per year.[4] The ARe500 is scheduled to enter revenue service on 1 April 2026, coinciding with the 40th anniversary of the railway's opening.[5]

Tenryū Hamanako Railroad

Tenryū Hamanako Railroad announced its plans in December 2025 to introduce GreenDEC cars, designated as THG100 (THG100形).[6] The first THG100 railcar, THG101, was delivered from the Kawasaki Railcar Manufacturing plant in Hyōgo in January 2026,[7] and the fleet entered revenue service from 14 March 2026.[8]

References

  1. ^ Nishinaka, Yuki (25 January 2026). 未来の燃料まで見据えた新たな気動車「GreenDEC」とは [What is "GreenDEC," a new diesel railcar that looks ahead to future fuels?]. tetsudo.com (in Japanese). Japan: 4X Corp. Retrieved 4 February 2026.
  2. ^ a b 川崎車両の電気式気動車「GreenDEC」2026年春から三セク2社で営業運転開始 [Kawasaki Heavy Industries' electric diesel railcar "GreenDEC" to begin commercial operation with two private sector companies from spring 2026]. Railway Pressnet (in Japanese). 20 December 2025. Retrieved 22 December 2025.
  3. ^ 川崎車両株式会社「GreenDEC」 電機品納入について [We will supply electrical equipment for "GreenDEC" by Kawasaki Railcar Manufacturing Co., Ltd.]. Toyo Denki (in Japanese). 21 January 2026. Retrieved 27 February 2026.
  4. ^ a b 甘木鉄道の車両すべて置換え、新型車両「ARe500形」2026年デビュー [Amagi Railway to replace all of its rolling stock with new ARe500 series rolling stock, debuting in 2026]. Mynavi News (in Japanese). 1 October 2025. Retrieved 19 December 2025.
  5. ^ 甘木鉄道で開業40周年記念列車運転 [Amagi Railway to operate special train to commemorate its 40th anniversary]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha. 15 March 2026. Retrieved 14 March 2026.
  6. ^ 天竜浜名湖鉄道の新型車両「電気式気動車」デビューに先立ち有料撮影会 [Paid photo session ahead of debut of Tenryū Hamanako Railroad's new electric railcar]. Railway Pressnet (in Japanese). 29 December 2025. Retrieved 31 December 2025.
  7. ^ 天竜浜名湖鉄道THG101が甲種輸送される [Tenryu Hamanako Railroad THG101 is transported]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha. 10 January 2026. Retrieved 10 January 2026.
  8. ^ 天竜浜名湖鉄道THG100形が営業運転を開始 [Tenryu Hamanako Railway's THG100 begins commercial operation]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha. 15 March 2026. Retrieved 14 March 2026.
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