In line with mission of establishing 30 GW non- renewable electrical energy generation capacity by Indian Railway in order to attain net zero emission target by 2030, Southern Railway has been taking number of steps on many fronts to achieve the above mission of Indian railway. This will aid our country in working towards clean & green environment and also in reduction in carbon footprint.
As a result of various steps taken by Southern Railway, energy savings of 570 million units in traction category and 18 million units in non-traction were achieved during 2020-21 w.r.t 2019-20. This has offset CO2 emission by 588000 metric tonnes and notional saving of Rs. 377 Crores to S Rly. Huge savings in energy has contributed for obtaining IGBC’s (Indian Green Building Council) Platinum rating for Coimbatore station, Green-CO certificate for Chennai Central station & GOC worshop, 5350 Energy Saving Certificates(EScerts) under PAT-II (Perform, Achieve and Trade) scheme of BEE, ISO 50001 certification to Tondiarpet and Ernakulam Diesel loco sheds and Erode, Arakkonam and Royapuram Electric Loco Sheds.
Steps taken for energy conservation in traction category
Under mission 100% Electrification of routes , SR has added 370 Track kilometer during 2020-21. This has enabled introduction of electric loco run passenger and goods train, reduction of diesel locomotives and improved operational efficieny. Achievement of Energy Saving Certificates(EScerts) under PAT scheme of BEE, revision in contracted maximum demand with State Electricity board and provision of Power Quality Compensating Equipment has reduced energy consumption.
Efficient Loco Sheds
Electric locomotive sheds at Erode, Arakkonam and Roypuram are ISO 50001 certified and provided APFC panel with reactor and screw compressor, both aids energy conservation. Introduction of Dual Mode Shunting Locomotive has eliminated the need for diesel shunting loco has resulting in annual saving of Rs.3.66 crores. At present, 5 nos of dual mode locos are being utilized in Tambaram and Basin Bridge yard. Tondiarpet and Ernakulam loco sheds have been awarded with EMS 50001 certification based on its large amount of energy savings.
Total holding of Electric locomotive has increased to 568 nos and diesel locomotives has reduced to 120 numbers resulting in saving of huge quantity of diesel and efficient running of trains. Out of above, 187 electric locomotives are 3-phase locomotives which are of high speed and high haulage capacity and of energy efficient and thus leading to efficient operations and energy saving.
Introduction of 3-phase EMUs in Chennai suburban and MEMUs in other remote areas in place of conventional EMU/MEMU is another move towards energy conservation. Additionally BLDC fans and LED lights have been used in these trains as well as in conventional design coaches. This resulted in energy saving of approximately 29% in EMU and 23% in MEMUs compared to their conventional designs.
Online monitoring of fuel savings is done through shutting down of locomotives during idle hours and has resulted in savings of approx. Rs. 47 crores in 2020-21. 15 nos. averaged diesel locomotives have been condemned and sold since 2019 and 100 diesel locos have been kept under Ground Reserve stock (GRS). This as also contributed in saving of fuel and manpower. Reduction in number of diesel filling depots and Diesel locomotives in service from 340 to 120 nos. has reduced consumption of substantial quantity of diesel resulting in saving of Rs. 371 crores till date during the this current financial year 2021-22.
Modern Rolling Stock
In coaching front, conventional design rakes have been replaced by 77 rakes of energy efficient LHB design. 37 pairs out of these rakes are running on HOG (Head on generation) which eliminates operation of Diesel generators in power car thereby saving huge amount of Diesel and eliminating air pollution. HOG technology eliminated the need for power car as the energy need of the train lighting and fans are met through Over head traction fed through locomotives. During 2021-22 , till august , 22.65 lakh litre diesel has been saved, equivalent to Rs 38 crores.
Steps taken for energy conservation in non-traction category -
·Southern Railway has installed 4.9 MWp of Solar energy as on date. The annual solar energy generation during 2020-21 is 4.07 million units which leads to a notional savings of Rs.1.77 Crores. The total energy generated so far from the date of installation by these solar plants is 12 million units which leads to notional savings of Rs 5 Crores.
·10.5 MW capacity of wind mill plants have been installed as on date. The annual energy generation during 2020-21 is 26 million units which leads to a notional savings of Rs.13 Crores. The total energy generated from the date of installation is 70 million units which leads to a notional savings of Rs.38 Crores.
·100% conversion of conventional lights to LED in all its premises
·Proliferation of BLDC fans for ceiling and air circulators.
·Timers for lights at stations, street lights, yard lights, manual control of lights as per need, energy savers for air circulators and welding plants.
·VVF drives for Lifts, escalators, battery chargers, cranes, generation testing in coaches.
·Star rated and inverter based air conditioners, occupancy sensors for lights , fans and air conditioners.
In addition to above measures, Southern Railway is working towards increasing capacity of solar plants and has planned for installation of 109 MWp solar plants in its vacant land of about 288 acres and the energy generated will feed to traction loads which will further result in huge saving in traction energy and saving to Railway. Of this 288 acres of land, tenders have been floated by REMCL for 119 acres of land area. Tender for 169 acres of land along track is being processed by REMCL (Railway Energy Management Company Ltd). At present, 2.1% of the Southern Railway’s total energy requirements, both traction and non-traction, are met through renewable energy source.
Southern Railway is also progressing fast on electrification of routes and expected to complete 100 % electrification by 2023. This will connect all routes of Southern Railway seamlessly to all parts of the country via electric traction which will eliminate delays in train operation due to change of locomotives and thus offering convenience to passenger and freight customers.