WR saves 4 cr every month after AC switch

The switchover to the alternating current (AC) from the direct current (DC) system on Western Railway added an extra Rs 4 crore to its kitty last month.

The savings are also because the AC system is more energy efficient and the transmission and distribution losses are less compared to the DC format. The WR runs 1,250 suburban services. The savings are substantial although the number of services has increased from 1,210 in December 2011.
“In 2011-12, WR was able to save Rs 53 crore after the conversion to the AC system,” said Sharat Chandrayan, WR’s chief public relations officer.

“The savings are bound to be substantial even though there may be an increase in services on WR’s suburban system in the future,” he added. WR has 77 AC-DC compatible rakes on its network.

WR has also registered the project with the United Nations Framework Convention on climate change. “Each rake has the potential to earn 35,000 units of carbon credits. It is estimated that these rakes will reduce overall carbon emissions,” he said. After the Mumbai division switched to the AC system this year, three phase locomotives with regenerative-brakes, which have the potential to save 15 to 17 % energy, have been introduced.

Super Saver

• Savings : 4cr in April

• AC-DC rakes on WR : 77

• Energy savings : 30%

•Savings (2011-12) : 53cr


Green rakes to net WR 2cr per year in carbon credits

Western Railway’s (WR) move to switch its network from 1,500V Direct Current (DC) to 25,000V Alternating Current (AC) will net it carbon credits worth Rs 2 crore per annum. This is because WR is now going to utilize rakes with regenerative braking features compatible with both DC and AC systems on its network, which will help it save energy.

The decision to switch from DC to AC necessitated the use of rakes that were compatible with the new power system. As aresult, WR had to phase out all the DC-compatible rakes in favour of those that can ply on dual AC-DC system. As of now, 83 (77 Siemens and 6 Alstom) AC-DC Electrical Multiple Unit (EMU) rakes are in operation.
Of these, 66 rakes have been registered under the United Nations Framework Convention on Climate Change (UNFCCC).

Sharat Chandrayan, chief public relations officer, WR said, “It is estimated that these rakes will reduce overall emission of CO2by 10,278 tonne. Carbon credits accrued to WR every year due to this will be approximately Rs 2 crore. Eleven more rakes are proposed to be registered under the UNFCCC, and their benefits on the carbon credits front will accrue proportionately in future.” The DC-AC rakes are energy-efficient as they have regenerative braking, where on application of brakes, the traction motor works like a generator and converts kinetic energy into electrical energy. The generated energy is fed back to the overhead equipment and used by other trains running on the section.

Lower electricity consumption will mean reduced fuel consumption in power plants and will automatically lead to reduced carbon dioxide emissions. DC-AC EMU rakes consume 30% less energy than conventional DC rakes.
Chandrayan said, “In the last one year, WR has increased 12-car services by 25%. In spite of the 10% increase in traction tariff by power suppliers,we have saved Rs 12.75 crore in the last 10 months on the traction energy bill.”


Delhi Metro is First in the World to Earn Carbon Credits

India has always boasted the longest rail network in the world. That network is also the fourth most heavily used in the world, transporting over 6 billion passengers and 350 million tons of freight annually.

Many cities, however, are in desperate need of a public transport overhaul and the sector is riddled with issues like outdated infrastructure, lack of investment, corruption and an increasing population which creates increased demand. According to recent Goldman Sachs estimates, India will need to spend US $1.7 trillion on infrastructure projects over the next decade to boost economic growth.

Transportation contributes a significant amount of carbon emissions and to tackle the problem of growing transportation needs, there needs to be a two-pronged effort. In cities, every effort must be made to improve public transportation, encourage alternatives like walking, biking and car-pooling.

There are several cities in the world where transportation systems are so good that you do not even need a car. In fact, owning a car becomes cumbersome. New York, Chicago, Paris, San Francisco, London all have excellent public transport systems. Asian cities like Hong Kong, Singapore, Shanghai, Beijing have the some of the greenest public transport systems that are not only efficient but also less carbon intensive.

The Indian capital of New Delhi can now join these ranks and boast that it is now the world’s first railway network to earn carbon credits from the United Nations for helping to cut greenhouse gas emissions. The Delhi Metro opened in 2002 and has helped reduce pollution levels in the city by 630,000 tonnes a year. Air pollution is part of a urban lifestyle, but it comes with serious health consequences. The WHO estimates that over 2 million people a year die prematurely from bad air. Delhi has rated consistently high on the pollution index, therefore any move to make the air cleaner is sure to be appreciated.

The Delhi Metro caters to 1.8 million people who use it daily and it will get $9.5m (£6.1m) in carbon credits annually for seven years. As the number of passengers increase, so will this figure. The Clean Development Mechanism (CDM) scheme run by the UN generates carbon credits and this gives developing countries financial incentives to cut greenhouse gas emissions.

The certificate for carbon credits was recently issued and the UN statement asserted that:

“The United Nations body administering the clean development mechanism under the Kyoto Protocol has certified that Delhi Metro has reduced emissions. No other Metro in the world could get the carbon credit because of the very stringent requirement to provide conclusive documentary proof of reduction in emissions.”

According to the UN, every passenger who uses the Metro instead of cars or buses helps to reduce GHG emissions by approximately 100gm of carbon-dioxide for every trip of 10km (6 miles). Similar systems are being planned or already under commission in other Indian cities – Bangalore is a notable example. If the Delhi Metro is any indication, planned infrastructure improvement is what India needs to tackle the dual problems of traffic congestion and pollution.


Published in: on October 26, 2011 at 7:13 am  Leave a Comment  
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Railways makes the right ‘carbon’ moves

MUMBAI: Railways is the latest entrant to take steps to cut down energy consumption and earn carbon credits. Recently, the ministry of railways has
awarded a contract through competitive bidding for supply of compact fluorescent lamps (CFLs) free of cost to railway employees residing in railway colonies.

The cost of CFLs will be recovered through carbon credits to be earned from the project. The department also stands to earn 3% carbon credits that accrue from the project.

Under the project each railway household will get up to a maximum of 4 CFLs in exchange for 4 incandescent lamps (ICL). A 60 watt ICL will be replaced by 14 watt CFL and 100 watt ICL by 20 watt CFL.

Besides, the department has started trials with bio-diesel for diesel locomotives and CNG mixed with high speed diesel in Diesel Multiple Units (DMUs). It is also trying to adopt state-of-art high efficiency insulated gate bipolar electrical multiple units (EMUs) to recover energy during braking. Besides reducing carbon emission it also cut down electricity consumption.

According to railways, a pilot wind mill project of 10.5 MW capacity has been successfully executed in Tamil Nadu for supply of wind generated electricity to Integral Coach Factory (ICF) at Chennai.


Published in: on May 24, 2010 at 6:11 am  Leave a Comment  
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US agency to execute railway CFL project

New Delhi (PTI): In a first of its kind initiative, Indian Railways is awarding a contract to a US-based agency to replace 26 lakhs incandescent bulbs with energy-efficient CFLs in railway households free of cost.

“Railways have issued the Letter of Intent to International Resources Group (IRG) to implement the CFL project in its colonies,” said a senior Railway Ministry official.

IRG will provide four CFL bulbs to each house in railway residential colonies free of cost and earn carbon credits by registering itself with the UN Framework Convention on Climate Change (UNFCCC) under Clean Development Mechanism (CDM) project.

Railways have total 6.5 lakh houses across the country.

“It is win-win situation for us. We are earning three per cent of total carbon credits earned from the CFL project without investing anything in it,” said the official.

IRG, which is to deposit bank draft worth Rs 50 lakhs as security deposit, will earn 97 per cent of total carbon credits for the project.

According to experts, compact fluorescent lamps (CFL) are four times more energy efficient and railways are expecting to save 130 million units of power per year from the project.

Railway Minister Lalu Prasad is likely to announce the implementation of the CFL project in the interim rail budget on February 13 in parliament.

Besides CFL project, railways are gearing up to earn carbon credits by running new generation trains on clean fuel.

According to the Kyoto Protocol, one carbon credit can be earned by preventing generation of a tonne of carbon dioxide. One carbon credit is worth USD 10 as per the UN Framework Convention on Climate Change guidelines.

Railways have signed two letters of intent with the World Bank to get carbon credits for its projects dealing with regenerative braking system and locomotives.

The new train will be fuel-efficient and will run on low-emission fuel. This would enable the railways to reduce the pollution level to a great extent besides earning carbon credits.

Introduction of solar-based lighting at level crossings and use of renewable sources of energy for railway applications are some of the measures undertaken by the railways to generate certified emission reduction.

Indian Railways spends about Rs 12,000 crore on energy which is about 29 per cent of its working expenses.Railways consume about 12.8 billion units of electricity and around 2 billion litres of diesel every year.