The Delhi Government has sought the Centre’s permission to allow it to divert the gas supply meant for the Gas Turbine Power Plant and the Indraprastha Plant to its new plant at Bawana. Doing so, will help increase production at Bawana, which is currently being run much below its installed capacity of 1500 MW.

With no additional supply of gas in sight, and the production of power at the three power plants dismally low, the Delhi Government has decided to juggle its existing supply of gas to ensure maximum utilisation of the fuel and better production of power.

Chief Minister Sheila Dikshit put up the proposal for the Centre’s approval when she met Union Power Minister M. Veerappa Moily this past week.

“Unless Bawana gets its full share of gas, it cannot be run to its full capacity and we cannot run the combined cycle using steam. As on date we don’t get to benefit from its technology. But, if the existing gas supply from the other two plants -- the Gas Turbine and the Indraprastha Plant -- is diverted to Bawana, then the plant can run to its full capacity and its heat receiving rate will go up. The production can be scaled up to 750 MW and that will benefit the city,” said Shakti Sinha, Principal Secretary Power of the Delhi Government.

The Bawana plant comprises two units of 750 MW each using natural gas as fuel, it is equipped with four gas turbines and two steam turbines of 250 MW each and can be operated in both open cycle as well as closed cycle mode. The plant has to work at full production for the steam turbines to work. As on date the Bawana plant generates only about 200-250 MW of power.

“The other two plants will not be shut down, but will be run on the lowest possible level to keep them working. The scheme will do good to the city, because with an increase in production at Bawana there will be more power at a lesser cost,” said Mr. Sinha.

The Gas Turbine plant with six turbines of 30 MW each, set up in 1985 currently supplies less than 100 MW of power to the city.

Gas tie-ups

The State needs the Centre’s go ahead as the gas tie-ups for the three plants are from different companies and each plant has an earmarked allocation.

If it is accepted, the scheme can be implement by other States that are in the process of phasing out older, suboptimal plants, the official said.

The shortage of gas has also delayed the closure of the city’s only coal-based plant, the Rajghat power plant. The 125 MW plant was scheduled for closing down by March next year, because of the high toxic gases it releases, thereby compounding the city’s pollution levels.

A decision to defer the closing has now been taken, keeping in the view the shortage of gas for the existing plants and the city’s growing demand for power.

“In 2011 it was decided that the plant will be shutdown by March 2013, since the plant is over two decades old, its efficiency has reduced and the generation of power is not very much, and the coal-base plant was identified as a source of toxic emissions. However, the demand-supply gap in power generation has made it difficult to shut down the plant, until the time there is a more assured source of supply of power,” said an official.

  • Gas being presently supplied to the Gas Turbine Power Plant and the Indraprastha Plant

  • Proposal to divert it to Bawana plant so that it can generate 750 MW power