Lok Sabha Question No. 679 (UNSTARRED), answered on 2019-11-20
Subject: Head on Generation (HoG) System
Ministry: RAILWAYS
Asked by: Gajanan Chandrakant Kirtikar, Sanjay Sadashivrao Mandlik, Sudheer Gupta, Bidyut Baran Mahato, Sambhajirao Mane Dhairyasheel

## GOVERNMENT OF INDIA MINISTRY OF RAILWAYS

## LOK SABHA

## UNSTARRED QUESTION NO. 679 TO BE ANSWERED ON 20.11.2019

## HEAD ON GENERATION (HOG) SYSTEM

## 679. SHRI GAJANAN KIRTIKAR:

SHRI SANJAY SADASHIV RAO MANDLIK:

SHRI SUDHEER GUPTA:

SHRI BIDYUT BARAN MAHATO:

SHRI DHAIRYASHEEL SAMBHAJIRAO MANE:

Will the Minister of RAILWAYS be pleased to state:

- (a) whether  Indian  Railways  has  adopted  an  energy-efficient  power supply system for coaches-the 'Head on Generation' (HoG) with the improvement  in  technology  and  continuous  advancements  in  the field  of  power  electronics,  power  supply  systems,  and  control system and if so, the details thereof;
- (b) the salient features of the HoG system and the total number of trains presently being run by the Railways under HoG across the country;
- (c) whether the Railways is likely to save diesel cost by adopting HoG system and if so, the details thereof;
- (d) whether  the  Indian  Railways  is  also  planning  to  convert  11  more pairs  of  trains  to  the  HoG  system  in  near  future,  including  two Shatabdi Express, two Duranto Express and two Mail Express trains and if so, the details thereof and the additional revenue likely to be earned by the Railways; and
- (e) whether the Railways is also planning to introduce Linke Hofmann Busch  (LHB)  AC  coaches  on  several  premium  and  mail  express trains  by  adopting  energy-efficient  power  supply  for  coaches-the HoG system and if so, the details thereof and the steps taken in this regard?

## ANSWER

## MINISTER OF RAILWAYS AND COMMERCE & INDUSTRY (SHRI PIYUSH GOYAL)

- (a) to (e)   A Statement is laid on the Table of the House.

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STATEMENT REFERRED TO IN REPLY TO PARTS (a) TO (e) OF UNSTARRED QUESTION NO. 679 BY SHRI GAJANAN KIRTIKAR, SHRI SANJAY SADASHIV RAO MANDLIK, SHRI SUDHEER GUPTA, SHRI BIDYUT BARAN MAHATO AND SHRI  DHAIRYASHEEL  SAMBHAJIRAO  MANE  TO  BE  ANSWERED  IN  LOK SABHA ON 20.11.2019 REGARDING HEAD ON GENERATION (HOG) SYSTEM (a)  &  (b)  Yes,  Sir.  Indian  Railways  has  adopted  an  energy-efficient  power supply  system  for  coaches  called  Head  On  Generation  (HOG)  system wherein power supply is drawn from Over Head Equipment (OHE) through converters  provided  in  electric  locomotive  (WAP-7/WAP-5)  for  coach  AC, lighting, fans etc. This system is being provided in End On Generation trains, where power cars equipped with DG sets, are provided at both the ends. The system is considered to provide a cost effective, reliable  and  energy efficient supply system for coaches. This eliminates use of Diesel Alternator set in power cars which creates noise & air pollution. (c) to (e) Yes, Sir. There is huge saving in diesel fuel consumption of power cars  with  introduction  of  HOG  system  in  Linke  Hofmann  Busch  (LHB) coaches. So far, 500 trains have been converted to HOG system resulting in approx. savings to the tune of ₹ 1182.22 crore per annum. During 2019-20, it is  planned  to  convert  balance  (200  trains)  End  On  Generation  (EOG)  LHB rakes  into  HOG  system.  By  conversion  of  such  trains,  Indian  Railways  is likely to save approx. ₹ 470 crore per annum.

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