Two-car set A5, December 2014
|In service||6 December 2014 -|
|Number under construction||144 vehicles (47 sets)|
|Number built||16 vehicles (8 sets) (as of 1 January 2015)|
|Number in service||16 vehicles (8 sets)|
|Formation||2/4 cars per trainset|
|Fleet numbers||A1-A30, B1-B25|
|Car body construction||Stainless steel|
|Car length||19,570 mm (64 ft 2 in) (end cars)
19,500 mm (64 ft 0 in) (intermediate cars)
|Width||2,950 mm (9 ft 8 in)|
|Height||3,620 mm (11 ft 11 in)|
|Floor height||1,130 mm (3 ft 8 in)|
|Doors||3 pairs per side|
|Maximum speed||110 km/h (70 mph)|
|Electric system(s)||1,500 V DC|
|Current collection method||Overhead catenary|
|Safety system(s)||ATS-P, ATS-Ps|
|Track gauge||1,067 mm (3 ft 6 in)|
Built at the J-TREC factory in Niitsu, Niigata, the stainless steel body and "universal design" interior is derived from the E233 series commuter EMU. Externally, trains are finished in a livery with "golden yellow" (黄金イエロー?) and "toki pink" (朱鷺ピンク?) stripes.
- Joetsu Line (Minakami – Miyauchi)
- Shinetsu Main Line (Naoetsu – Niigata)
- Uetsu Main Line (Niitsu – Murakami)
- Hakushin Line (Niigata – Shibata)
- Echigo Line (Kashiwazaki – Niigata)
- Yahiko Line (Higashi-Sanjō – Yahiko)
The E129 series fleet will ultimately consist of 30 two-car sets (60 vehicles) numbered A1 to A30 and 25 four-car sets (100 vehicles) numbered B1 to B25, all based at Niigata Depot.
2-car sets A1-A30
|Numbering||KuMoHa E129-100||KuMoHa E128-100|
- The KuMoHa E129-100 car is fitted with a PS33G single-arm pantograph (cars KuMoHa E129-123 to KuMoHa E129-130 have two pantographs, and weigh 37.4 t).
- The KuMoHa E128-100 car has a universal access toilet.
4-car sets B1-B25
|Numbering||KuMoHa E129||MoHa E128||MoHa E129||KuMoHa E128|
- The KuMoHa E129 and MoHa E129 cars are each fitted with one PS33G single-arm pantograph.
- The KuMoHa E128 car has a universal access toilet.
Passenger accommodation consists of a mix of transverse seating bays and longitudinal bench seating. LED lighting is used throughout. Longitudinal seats have a width of 460 mm (1 ft 6 in) per person, 10 mm wider than for the earlier E127 series trains, and the seating pitch for transverse seating bays is 540 mm (1 ft 9 in), approximately 110 mm wider that E233 series trains. Floor height is 1,130 mm (3 ft 8 in), the same as for E127 series trains, and lower than the 1,225 mm (4 ft 0.2 in) floor height of 115 series trains.
The first trains entered revenue service on 6 December 2014.
The build histories of individual sets are as follows.
|Set No.||Manufacturer||Date delivered|
|A1||J-TREC, Niitsu||17 October 2014|
|A2||J-TREC, Niitsu||17 October 2014|
|A3||J-TREC, Niitsu||17 October 2014|
|A4||J-TREC, Niitsu||23 October 2014|
|A5||J-TREC, Niitsu||7 November 2014|
|A6||J-TREC, Niitsu||21 November 2014|
|A7||J-TREC, Niitsu||8 December 2014|
|A8||J-TREC, Niitsu||22 December 2014|
|Set No.||Manufacturer||Date delivered|
|Wikimedia Commons has media related to E129 series.|
- Mizutani, Keisuke (January 2015). E129系一般形直流電車 [E129 series DC EMU]. Japan Railfan Magazine (in Japanese) (Japan: Koyusha Co., Ltd.) 55 (645): p.60-66.
- 通勤形車両の新造計画について [New commuter train manufacture plans] (PDF) (in Japanese). East Japan Railway Company. 2 July 2013. Retrieved 21 November 2014.
- Miki, Kazuya (14 August 2013). 「新潟産」車両、地元に投入 ＪＲ東日本のＥ１２９系 ["Niigata-built" trains to be introduced locally - JR East E129 series]. Asahi Shimbun Digital (in Japanese). Japan: The Asahi Shimbun Limited. Retrieved 29 November 2013.
- E129系が試運転 [E129 series is test run]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 9 October 2014. Retrieved 9 October 2014.
- E129系が営業運転を開始 [E129 series enters revenue service]. Japan Railfan Magazine Online (in Japanese). Japan: Koyusha Co., Ltd. 7 December 2014. Retrieved 9 December 2014.
- JR車両のうごき [JR rolling stock changes]. Tetsudō Daiya Jōhō Magazine (in Japanese) (Japan: Kōtsū Shimbun) 44 (371): p.127. March 2015.