Supercritical technology for power plants to save fuel

The Centre has launched supercritical power programme on the lines of the US, Japan, Germany, Korea and Russia. Power ministry sources told FE that the super critical technology will result in saving of about 4% of fuel and correspondingly less emission.

With crude oil prices shooting through the roof, India, which is a signatory to the Kyoto Protocol, in order to support the technology in the thermal power projects, the government has decided that the methodology for the award of 7 units of 660 mw and 6 units of 800 mw would pave the way for progressive indigenisation of supercritical technology. The government is striving to meet the capacity addition target of 78,700 mw in the 11th Plan.

Several companies have already expressed interest to augment or set up manufacturing facilities in the country for super-critical units. These include Bhel, Boiler and Turbine Generator (TG), Ansaldo Caldie (Boiler), L&T?MHI (Boiler and TG), Toshiba?JSW (TG) and Alstom-Bharat Forge (TG). Larsen & Toubro already had a tie-up with Mitsubishi Heavy Industries of Japan for manufacturing supercritical steam turbines and generators in India.

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Currently, supercritical technologies are under installation at Sipat and Barh thermal power stations of NTPC. The Ultra Mega Power Projects are also being envisaged to be set up with supercritical parameters. Tata Power?s Mundra project imported turbines from Toshiba and boilers from Doosan, Korea.

NTPC and the state utilities, in addition, have proposed to set up a number of 600/800 mw power stations based on supercritical technology. The list of projects include NTPC?s Darlipalli in Orissa (4×800 mw), NTPC?s Tanda expansion in Uttar Pradesh (2×660 mw), NTPC?s Pench in Madhya Pradesh (2×660 mw), NTPC-Uttar Pradesh joint venture?s Mejja in UP (2×660 mw), NTPC-Bihar JV?s New Nabinagar in Bihar (2×660 mw), Mahagenco?s Koradi in Maharashtra (3×660 mw), Mahagenco?s Dhopawe in Maharashtra (2×800 mw), BHEL-UP JV?s Obra in UP (2×800 mw) and Bhel-Tamil Nadu Electricity Board JV?s Udangudi in Tamil Nadu (2×800 mw).