Thermal Power Plant

At present 54.09% or 93918.38 MW (Data Source CEA, as on 31/03/2011) of total electricity production in India is from Coal Based Thermal Power Station. A coal based thermal power plant converts the chemical energy of the coal into electrical energy. This is achieved by raising the steam in the boilers, expanding it through the turbine and coupling the turbines to the generators which converts mechanical energy into electrical energy.

Coal Based Power Station

Introductory overview

In a coal based power plant coal is transported from coal mines to the power plant by railway in wagons or in a merry-go-round system. Coal is unloaded from the wagons to a moving underground conveyor belt. This coal from the mines is of no uniform size. So it is taken to the Crusher house and crushed to a size of 20mm. From the crusher house the coal is either stored in dead storage( generally 40 days coal supply) which serves as coal supply in case of coal supply bottleneck or to the live storage(8 hours coal supply) in the raw coal bunker in the boiler house. Raw coal from the raw coal bunker is supplied to the Coal Mills by a Raw Coal Feeder. The Coal Mills or pulverizer pulverizes the coal to 200 mesh size. The powdered coal from the coal mills is carried to the boiler in coal pipes by high pressure hot air. The pulverized coal air mixture is burnt in the boiler in the combustion zone.
Generally in modern boilers tangential firing system is used i.e. the coal nozzles/ guns form tangent to a circle. The temperature in fire ball is of the order of 1300 deg.C. The boiler is a water tube boiler hanging from the top. Water is converted to steam in the boiler and steam is separated from water in the boiler Drum. The saturated steam from the boiler drum is taken to the Low Temperature Superheater, Platen Superheater and Final Superheater respectively for superheating. The superheated steam from the final superheater is taken to the High Pressure Steam Turbine (HPT). In the HPT the steam pressure is utilized to rotate the turbine and the resultant is rotational energy. From the HPT the out coming steam is taken to the Reheater in the boiler to increase its temperature as the steam becomes wet at the HPT outlet. After reheating this steam is taken to the Intermediate Pressure Turbine (IPT) and then to the Low Pressure Turbine (LPT). The outlet of the LPT is sent to the condenser for condensing back to water by a cooling water system. This condensed water is collected in the Hotwell and is again sent to the boiler in a closed cycle. The rotational energy imparted to the turbine by high pressure steam is converted to electrical energy in the Generator.

Diagram of a typical coal-fired thermal power station

Coal Based Thermal Power Plant


Coal based thermal power plant works on the principal of Modified Rankine Cycle.

Modified rankine Cycle

Components of Coal Fired Thermal Power Station:

  • Coal Preparation

i) Fuel preparation system: In coal-fired power stations, the raw feed coal from the coal storage area is first crushed into small pieces and then conveyed to the coal feed hoppers at the boilers. The coal is next pulverized into a very fine powder, so that coal will undergo complete combustion during combustion process

.** pulverizer is a mechanical device for the grinding of many different types of materials. For example, the are used to pulverize coal for combustion in the steam-generating furnaces of fossil fuel power plants.Types of Pulverisers: Ball and Tube mills; Ring and Ball mills; MPS; Ball mill; Demolition

ii) Dryers:  they are used in order to remove the excess moisture from coal mainly wetted during transport. As the presence of moisture will result in fall in efficiency due to incomplete combustion and also result in CO emission.

iii) Magnetic separators: coal which is brought may contain iron particles. These iron particles may result in wear and tear. The iron particles may include bolts, nuts wire fish plates etc. so these are unwanted and so are removed with the help of  magnetic separators.

iv)  The coal we finally get after these above process are transferred to the storage site.
Purpose of fuel storage is two –

  •  Fuel storage is insurance from failure of normal operating supplies to arrive.
  • Storage permits some choice of the date of purchase, allowing the purchaser to take advantage of seasonal market conditions. Storage of coal is primarily a matter of protection against the coal strikes, failure of the transportation system & general coal shortages.

There are two types of storage:

  1. Live Storage (boiler room storage): storage from which coal may be withdrawn to supply combustion equipment with little or no remanding is live storage. This storage consists of about 24 to 30 hrs. of coal requirements of the plant and is usually a covered storage in the plant near the boiler furnace. The live storage can be provided with bunkers & coal bins. Bunkers are enough capacity to store the requisite of coal. From bunkers coal is transferred to the boiler grates.
  2. Dead storage– stored for future use. Mainly it is for longer period of time, and it is also mandatory to keep a backup of fuel for specified amount of days depending on the reputation of the company and its connectivity.There are many forms of storage some of which are –
    1. Stacking the coal in heaps over available open ground areas.
    2. As in (I). But placed under cover or alternatively in bunkers.
    3. Allocating special areas & surrounding these with high reinforced concerted retaking walls.
  • Boiler and auxiliaries

A Boiler or steam generator essentially is a container into which water can be fed and steam can be taken out at desired pressure, temperature and flow. This calls for application of heat on the container. For that the boiler should have a facility to burn a fuel and release the heat. The functions of a boiler thus can be stated as:-

  1. To convert chemical energy of the fuel into heat energy
  2. To transfer this heat energy to water for evaporation as well to steam for superheating.

The basic components of Boiler are: –

  1. Furnace and Burners
  2. Steam and Superheating

a)       Low temperature superheater

b)        Platen superheater

c)       Final superheater

  • Economiser

It is located below the LPSH in the boiler and above pre heater. It is there to improve the efficiency of boiler by extracting heat from flue gases to heat water and send it to boiler drum.

Advantages of Economiser include

1) Fuel economy: – used to save fuel and increase overall efficiency of boiler plant.

2) Reducing size of boiler: – as the feed water is preheated in the economiser and enter boiler tube at elevated temperature. The heat transfer area required for evaporation reduced considerably.

  • Air Preheater

The heat carried out with the flue gases coming out of economiser are further utilized for preheating the air before supplying to the combustion chamber. It is a necessary equipment for supply of hot air for drying the coal in pulverized fuel systems to facilitate grinding and satisfactory combustion of fuel in the furnace

  •  Reheater

Power plant furnaces may have a reheater section containing tubes heated by hot flue gases outside the tubes. Exhaust steam from the high pressure turbine is rerouted to go inside the reheater tubes to pickup more energy to go drive intermediate or lower pressure turbines.

  • Steam turbines

Steam turbines have been used predominantly as prime mover in all thermal power stations. The steam turbines are mainly divided into two groups: –

  1. Impulse turbine
  2. Impulse-reaction turbine

The turbine generator consists of a series of steam turbines interconnected to each other and a generator on a common shaft. There is a high pressure turbine at one end, followed by an intermediate pressure turbine, two low pressure turbines, and the generator. The steam at high temperature (536 ‘c to 540 ‘c) and pressure (140 to 170 kg/cm2) is expanded in the turbine.

  • Condenser

The condenser condenses the steam from the exhaust of the turbine into liquid to allow it to be pumped. If the condenser can be made cooler, the pressure of the exhaust steam is reduced and efficiency of the cycle increases. The functions of a condenser are:-

1) To provide lowest economic heat rejection temperature for steam.

2) To convert exhaust steam to water for reserve thus saving on feed water requirement.

3)  To introduce make up water.

We normally use surface condenser although there is one direct contact condenser as well. In direct contact type exhaust steam is mixed with directly with D.M cooling water.

  • Boiler feed pump

Boiler feed pump is a multi stage pump provided for pumping feed water to economiser. BFP is the biggest auxiliary equipment after Boiler and Turbine. It consumes about 4 to 5 % of total electricity generation.

  • Cooling tower

The cooling tower is a semi-enclosed device for evaporative cooling of water by contact with air. The hot water coming out from the condenser is fed to the tower on the top and allowed to tickle in form of thin sheets or drops. The air flows from bottom of the tower or perpendicular to the direction of water flow and then exhausts to the atmosphere after effective cooling.

The cooling towers are of four types: –

1. Natural Draft cooling tower

2. Forced Draft cooling tower

3. Induced Draft cooling tower

4. Balanced Draft cooling tower

  • Fan or draught system

In a boiler it is essential to supply a controlled amount of air to the furnace for effective combustion of fuel and to evacuate hot gases formed in the furnace through the various heat transfer area of the boiler. This can be done by using a chimney or mechanical device such as fans which acts as pump.

i) Natural draught 

When the required flow of air and flue gas through a boiler can be obtained by the stack (chimney) alone, the system is called natural draught. When the gas within the stack is hot, its specific weight will be less than the cool air outside; therefore the unit pressure at the base of stack resulting from weight of the column of hot gas within the stack will be less than the column of extreme cool air. The difference in the pressure will cause a flow of gas through opening in base of stack. Also the chimney is form of nozzle, so the pressure at top is very small and gases flow from high pressure to low pressure at the top.

ii) Mechanized draught

There are 3 types of mechanized draught systems

1)       Forced draught system

2)       Induced draught system

3)       Balanced draught system

Forced draught: – In this system a fan called Forced draught fan is installed at the inlet of the boiler. This fan forces the atmospheric air through the boiler furnace and pushes out the hot gases from the furnace through superheater, reheater, economiser and air heater to stacks.

Induced draught: – Here a fan called ID fan is provided at the outlet of boiler, that is, just before the chimney. This fan sucks hot gases from the furnace through the superheaters, economiser, reheater and discharges gas into the chimney. This results in the furnace pressure lower than atmosphere and affects the flow of air from outside to the furnace.

Balanced draught:-In this system both FD fan and ID fan are provided. The FD fan is utilized to draw control quantity of air from atmosphere and force the same into furnace. The ID fan sucks the product of combustion from furnace and discharges into chimney. The point where draught is zero is called balancing point.

  • Ash handling system

The disposal of ash from a large capacity power station is of same importance as ash is produced in large quantities. Ash handling is a major problem.

i) Manual handling: While barrows are used for this. The ash is collected directly through the ash outlet door from the boiler into the container from manually.

ii) Mechanical handling: Mechanical equipment is used for ash disposal, mainly bucket elevator, belt conveyer. Ash generated is 20% in the form of bottom ash and next 80% through flue gases, so called Fly ash and collected in ESP.

iii) Electrostatic precipitator: From air preheater this flue gases (mixed with ash) goes to ESP. The precipitator has plate banks (A-F) which are insulated from each other between which the flue gases are made to pass. The dust particles are ionized and attracted by charged electrodes. The electrodes are maintained at 60KV. Hammering is done to the plates so that fly ash comes down and collect at the bottom. The fly ash is dry form is used in cement manufacture.

  • Generator

Generator or Alternator is the electrical end of a turbo-generator set. It is generally known as the piece of equipment that converts the mechanical energy of turbine into electricity. The generation of electricity is based on the principle of electromagnetic induction.

Advantages of coal based thermal Power Plant

  • They can respond to rapidly changing loads without difficulty
  • A portion of the steam generated can be used as a process steam in different industries
  • Steam engines and turbines can work under 25 % of overload continuously
  • Fuel used is cheaper
  • Cheaper in production cost in comparison with that of diesel power stations

Disadvantages of coal based thermal Power Plant

  • Maintenance and operating costs are high
  • Long time required for erection and putting into  action
  • A large quantity of water is required
  • Great difficulty experienced in coal handling
  • Presence of troubles due to smoke and heat in the plant
  • Unavailability of good quality coal
  • Maximum of  heat  energy lost
  • Problem of ash removing

Major Thermal Power Plants in India

Plant Name Operator Location District State Sector Units Capacity
Akrimota Thermal Power Station GMDC Chher Nani Kutch Gujarat State 2×125 250
Amarkantak Thermal Power Station MPPGCL Chachai Anuppur Madhya Pradesh State 2×120, 1×210 450
Amravati Thermal Power Plant INDIABULLS Nandgaonpeth Amravati Maharashtra Private 10X270 2700
Anpara Thermal Power Station UPRVUNL Anpara Sonebhadra Uttar Pradesh State 3×210, 2×500 1630
Badarpur Thermal Power Station NTPC Badarpur New Delhi NCT Delhi Central 3×95,  2×210 705
Bakreshwar Thermal Power Station WBPDCL Suri Birbhum West Bengal State 5×210 1050
Bandel Thermal Power Station WBPDCL Tribeni Hooghly West Bengal State 4×60,  1×210 450
Barauni Thermal Power Station NTPC Barauni Begusarai Bihar State 2×50,  2×105 310
Barsingsar Lignite Power Plant NLC Barsingsar Bikaner Rajasthan Central 2×125 250
Bellary Thermal Power Station KPCL Kudatini Bellary Karnataka State 1×500 500
Bhawnendra Singh Deo Power Plant CSPGCL Korba East Korba Chhattisgarh State 4×50,  2×120 440
Bhilai Expansion Power Plant NTPC-SAIL(JV) Bhilai Durg Chhattisgarh Central 2×250 500
Bhusawal Thermal Power Station MAHAGENCO Deepnagar Jalgaon Maharashtra State 2×210 420
Bokaro Thermal Power Station B DVC Bokaro Bokaro Jharkhand Central 3×210 630
Budge Budge Thermal Power Plant CESC Achipur South 24 Paraganas West Bengal Private 3×250 750
Captive Power Plant NALCO Angul Angul Orissa State 2×210 420
CESC Southern Generating Station CESC Metiabruz Metiabruz West Bengal Private 3×67.5 135
Chandrapur Super Thermal Power Station MAHAGENCO Urjanagar Chandrapur Maharashtra State 4×210, 3×500 2340
Chandrapura Thermal Power Station DVC Chandrapura Bokaro Jharkhand Central 3×130, 3×120, 2×250 1250
Chhabra Thermal Power Plant RVUNL Mothipura Baran Rajasthan State 2×250 500
Dahanu Thermal Power Station Reliance Energy Dahanu Thane Maharashtra Private 2×250 500
Dhuvaran Thermal Power Station GSECL Khambhat Anand Gujarat State 2×110 220
Dr Narla Tatarao TPS APGENCO Ibrahimpatnam Krishna Andhra Pradesh State 6×210, 1×500 1760
Dr Shyama Prasad Mukharjee  Thermal Power Plant CSPGCL Korba Korba Chhattisgarh State 2×250 500
Durgapur Steel Thermal Power Station DVC Durgapur Bardhman West Bengal Central 2×500 1000
Durgapur Thermal Power Plant DPL Durgapur Bardhaman West Bengal State 2×30, 1×70,   2×75, 1×110, 1×300 690
Plant Name Operator Location District State Sector Units Capacity
Durgapur Thermal Power Station DVC Durgapur Bardhaman West Bengal Central 1×140, 1×210 350
Ennore Thermal Power Station TNEB Ennore Chennai Tamil Nadu State 2×60,  3×110 450
Essar Power Gujarat Ltd. Essar Power Jamnagar Salaya Gujarat Private IPP 2X600 1200
Farakka Super Thermal Power Station NTPC Nagarun Murshidabad West Bengal Central 3×200, 2×500, 1×500 2100
Faridabad Thermal Power Station HPGCL Faridabad Faridabad Haryana State 1×55 55
Feroj Gandhi Unchahar Thermal Power Plant NTPC Unchahar Raebareli Uttar Pradesh Central 5×210 1050
Gandhinagar Thermal Power Station GSECL Gandhinagar Gandhinagar Gujarat State 2×120, 3×210 870
Giral Lignite Power Plant RVUNL Thumbli Barmer Rajasthan State 2×125 250
Guru Gobind Singh Super Thermal Power Plant PSPCL Ghanauli Rupnagar Punjab State 6×210 1260
Guru Hargobind TP PSPCL Lehra Mohabbat Bathinda Punjab State 2×210, 2×250 920
Guru Nanak dev TP PSPCL Bathinda Bathinda Punjab State 4×110 440
Harduaganj Thermal Power Station UPRVUNL Harduaganj Aligarh Uttar Pradesh State 1×55,   1×60,  1×105 220
Hirakud Power: CPP Hindalco Industries Hirakud Sambalpur Orissa Private CPP 1x 67.5, 3×100 367.5
IB Thermal Power Plant OPGCL Banharpali Jharsuguda Orissa State 8×120 960
Jharsuguda TPP Vedanta Jharsuguda Jharsuguda Orissa Private IPP 4×600 2400
Jindal Megha Power Plant Jindal Tamnar Raigarh Chhattisgarh Private 4×250 1000
Jojobera TPP Tata Jojobera Jamshedpur Jharkhand Private 3×120, 1×67.5 427.5
JSW EL-SBU-I Power Plant JSW Vijayanagar Bellary Karnataka Private 2×130 260
JSW EL-SBU-II Power Plant JSW Vijayanagar Bellary Karnataka Private 2×300 600
Kahalgaon Super Thermal Power Station NTPC Kahalgaon Bhagalpur Bihar Central 4×210, 3×500 2340
Kakatiya Thermal Power Station APGENCO Chelpur Warangal Andhra Pradesh State 1×500 500
Khaperkheda Thermal Power Station MAHAGENCO Kaparkheda Nagpur Maharashtra State 4×210, 1×500 1340
Koderma Thermal Power Station DVC Koderma Koderma Jharkhand Central 2×500 1000
Kolaghat Thermal Power Station WBPDCL Mecheda East Midnapore West Bengal State 6×210 1260
Koradi Thermal Power Station MAHAGENCO Koradi Nagpur Maharashtra State 1×200, 2×210 620
Plant Name Operator Location District State Sector Units Capacity
Korba Super Thermal Power Plant NTPC Jamani Palli Korba Chhattisgarh Central 3×200, 4×500 2600
Korba West Hasdeo Thermal Power Plant CSPGCL Korba west Korba Chhattisgarh State 4×210 840
Kota Super Thermal Power Plant RVUNL Kota Kota Rajasthan State 2×110, 3×210, 2×195 1240
Kothagudem Thermal Power Station APGENCO Paloncha Khammam Andhra Pradesh State 4×60,  4×120 720
Kothagudem Thermal Power Station V Stage APGENCO Paloncha Khammam Andhra Pradesh State 2×250 500
Kutch Thermal Power Station GSECL Panandhro Kutch Gujarat State 2×70,  2×75 290
Lanco Amarkantak Power Plant Lanco Pathadi Korba Chhattisgarh Private 2×300 600
Mejia Thermal Power Station DVC Durlavpur Bankura West Bengal Central 4×210,  2×250,      2×500 2340
Mettur Thermal Power Station TNEB Metturdam Salem Tamil Nadu State 4×210 840
Mundra Thermal Power Station Adani Power Mundra Kutch Gujarat Private 4×330, 5X660 4620
Mundra Ultra Mega Power Project Tata Power Mundra Kutch Gujarat Private 5X800 4000
Muzaffarpur Thermal Power Station NTPC Kanti Muzaffarpur Bihar State 2×110 220
Nashik Thermal Power Station MAHAGENCO Nashik Nashik Maharashtra State 3×210 630
Neyveli Thermal Power Station NLC Neyveli Cuddalore Tamil Nadu Central 6×50, 3×100, 2×210 1020
Neyveli Thermal Power Station NLC Neyveli Cuddalore Tamil Nadu Central 7×210 1470
Neyveli Zero Unit NLC Neyveli Cuddalore Tamil Nadu Private 1×250 250
North Chennai Thermal Power Station TNEB Athipattu Thiruvallore Tamil Nadu State 3×210 630
NTPC Dadri NTPC Vidyutnagar Gautam Budh Nagar Uttar Pradesh Central 4×210, 2×490 1820
NTPC Ramagundam NTPC Jyothi Nagar Karimnagar Andhra Pradesh Central 3×200, 4×500 2600
Obra Thermal Power Station UPRVUNL Obra Sonebhadra Uttar Pradesh State 1×40,   3×94,  5×200 1,322
Panipat Thermal Power Station I HPGCL Assan Panipat Haryana State 4×110 440
Panipat Thermal Power Station II HPGCL Assan Panipat Haryana State 2×210, 2×250 920
Panki Thermal Power Station UPRVUNL Panki Kanpur Uttar Pradesh State 2×105 210
Paras Thermal Power Station MAHAGENCO Vidyutnagar Akola Maharashtra State 2×250 500
Parichha Thermal Power Station UPRVUNL Parichha Jhansi Uttar Pradesh State 2×110, 2×210 640
Parli Thermal Power Station MAHAGENCO Parli-Vaijnath Beed Maharashtra State 3×210, 2×250 1130
Plant Name Operator Location District State Sector Units Capacity
Patratu Thermal Power Station JSEB Patratu Ramgarh Jharkhand State 4×40,   2×90, 2×105, 2×110 770
Raichur Thermal Power Station KPCL Raichur Raichur Karnataka State 7×210, 1×250 1720
Raj west Lignite Power Plant JSW Barmer Barmer Rajasthan Private 8×135 1080
Rajghat Power Station IPGCL Rajghat North Delhi Delhi State 2X67.5 135
Rajiv Gandhi Thermal Power Station HPGCL Khedar Hisar Haryana State 1×600 600
Ramagundam B Thermal Power Station APGENCO Ramagundam Karimnagar Andhra Pradesh State 1×62.5 62.5
Rayalaseema Thermal Power Station APGENCO Cuddapah YSR Andhra Pradesh State 4×210 840
Rihand Thermal Power Station NTPC Rihand Nagar Sonebhadra Uttar Pradesh Central 4×500 2000
Rosa Thermal Power Plant Reliance Rosa Shahjahanpur Uttar Pradesh Private 4×300 1200
Sabarmati Thermal Power Station Torrent Power Sabarmati Ahmedabad Gujarat Private 1×60, 1×120, 2×110 400
Sagardigi Thermal Power Station WBPDCL Monigram Murshidabad West Bengal State 2×300 600
Sanjay Gandhi Thermal Power Station MPPGCL Birsinghpur Umaria Madhya Pradesh State 4×210, 1×500 1340
Santaldih Thermal Power Station WBPDCL Santaldih Purulia West Bengal State 4×120, 1×250 730
Satpura Thermal Power Station MPPGCL Sarni Betul Madhya Pradesh State 5×37.5, 1×200, 3×210 1017.5
Sikka Thermal Power Station GSECL Jamnagar Jamnagar Gujarat State 2×120 240
Simhadri Super Thermal Power Plant NTPC Simhadri Visakhapatnam Andhra Pradesh Central 4×500 2000
Singrauli Super Thermal Power Station NTPC Shaktinagar Sonebhadra Uttar Pradesh Central 5×200, 2×500 2000
Sipat Thermal Power Plant NTPC Sipat Bilaspur Chhattisgarh Central 2×500, 2×660 2320
Surat Thermal Power Station GIPCL Nani Naroli Surat Gujarat State 4×125 500
Suratgarh Super Thermal Power Plant RVUNL Suratgarh Sri Ganganagar Rajasthan State 6×250 1500
Talcher Super Thermal Power Station NTPC Kaniha Angul Orissa Central 6×500 3000
Talcher Thermal Power Station NTPC Talcher Angul Orissa Central 4×60,  2×110 460
Tanda Thermal Power Plant NTPC Vidyutnagar Ambedkar Nagar Uttar Pradesh Central 4×110 440
Tenughat Thermal Power Station TVNL Bermo Bokaro Jharkhand State 2×210 420
Plant Name Operator Location District State Sector Units Capacity
Titagarh Thermal Power Station CESC Titagarh North 24  Paraganas West Bengal Private 4×60 240
Trombay Thermal Power Station Tata Trombay Mumbai Maharashtra Private 1×150, 2×500, 1×250 1400
Tuticorin Thermal Power Station TNEB Tuticorin Tuticorin Tamil Nadu State 5×210 1050
Udupi Thermal Power Plant Lanco Nandikoor Udupi Karnataka Private 1×600 600
Ukai Thermal Power Station GSECL Ukai dam Tapi Gujarat State 2×120, 2×200, 1×210 850
Vedanta Aluminum CPP Vedanta Jharsuguda Jharsuguda Orissa Private CPP 9×135 1215
Vindhyachal Super Thermal Power Station NTPC Vindhya Nagar Singrauli Madhya Pradesh Central 6×210, 4×500, 1×500 3760
VS Lignite Power Plant KSK Gurha Bikaner Rajasthan Private 1×125 125
Wanakbori Thermal Power Station GSECL Wanakbori Kheda Gujarat State 7×210 1470
Wardha Warora Power Station KSK Warora Chandrapur Maharashtra Private 1×135 135

90 Responses

  1. ntpc rajghat close date is 15 june 2011 Is is true . send the name of company who took the whole scrapt of power plant

    • SUMIT KUMAR says:

      -The Delhi government is toying with the idea of permanently shutting down the Rajghat power plant close by june this year . The plant was earlier closed during the Commonwealth Games to remove the polluting unit in the heart of the city, and provide to residents a recreational area in its place.
      -The power station, situated in northeast Delhi, is one of the coal-based power plants of Indraprashta Power Generation Co. Ltd. (IPGCL) and has a generation capacity of 135 MW.
      -The power plant was commissioned in 1989 and supplied 135 MW. The Delhi State Industrial and Infrastructure Development Corporation (DSIIDC) had been asked to prepare a blueprint for “adaptive reuse”, and the agency presented its proposal in front of Chief Minister Sheila Dikshit and other officials on Wednesday. Dikshit has given in-principle approval to the project, which will require several clearances before it can begin. It will now be presented to the DDA and the DUAC. The project will take about 3 to 4 years to be implemented.
      -“Cost of the project is close to Rs 600 crore. It will be a self financing project as power plant equipment will be sold off and also the office space developed inside the plant will be rented out. Rajghat power plant is spread over 46 acre and as per the DSIIDC proposal, 26 acre will be turned into a city forest. The ash pond inside the plant will be enlarged and converted into a waterbody. The soil there is contaminated due to ash depositing here over the years so it would be cleaned before work starts.
      -The existing waterbody, which is used by the power plant, will be retained and redeveloped. The plan is to have the forest and the waterbody close to the Salimgarh Fort so that the area can be developed as a tourist spot. The area where coal handling was done will be converted into a garden and the main building of the plant will be converted into office space. “We will not touch the outer structure or the envelope of the building. The only changes will be in the interior of the building. Also, demolishing the existing structure will cost more than retrofitting it,” said the official. This is the second power plant site that the government is redeveloping – retrofitting of the Indraprastha Power plant is already underway. Its equipment has already been auctioned.

  2. ABDUL JALIL says:

    Very nice one.

    Will you give the e-mail ID of Mr. SUMIT KUMAR please?

  3. Rizwan says:

    Very very good bhai, thanx a lot for a huge information.

  4. sruthin says:

    heyy gr88 workk sir…it ws realyy informative…spott onnn!!!

  5. Tanu Saxena says:

    Hey… gr8 info…
    Bt what is done in the power plants in order to treat flue gases?
    there is no mention of even any scrubber…do they even operate in any power plant?

  6. dixitpatel says:

    its very good detail………….

  7. naveen ($onu) says:

    one of the most apt and brisk synopsys of a thermal power plant i have ever read. the two diagrams at the start of modified rankine cycle and the plant over view are the highlights. Great work sir. you have proved a valid point again that simple logics are more important than unrequired expertise. i would be very impressed if u could also add on super critical technology and once through boilers which use a seperator rather than the conventional circulation type boilers. also some some point missing are gland steam cooler and also a note on water technology. but all together great work.

    • shivanshtyagi says:

      Dear Naveen thanks for appreciation and suggestion. Well will you like to add all these suggestions to the site. If you want just send us the word file and the update will be done in your name on the main page.

  8. Vaaimai says:

    What is the thermal efficiency of a thermal power plant? You said that Neyveli Thermal Power Station – II is producing 1470 MW of power. Whether it produces such amount of electricity or lesser than that? (say 60 % efficiency means 882 MW)

    • shivanshtyagi says:

      1470 is the installed capacity of the plant.Normally thermal power plants run on around 85-90% efficency.

  9. Vaaimai says:

    Thanks. But I learnt that efficiency of thermal power plants are around 45% – 50%.

    • shivanshtyagi says:

      That is my bad, yes effieceincy of plant are 45-45% but that is thermal efficiency i.e how much coal energy is converted into the electric power.
      For thermal power plant there is a factor called Plant load Factor (PLF), so if a plant has installed capacity of 100 and it rums with PLF of 90% it will produce 90MWh of instantaneous power.
      On an average plf of plants are from 85-90%. Though some plants even run of PLF higher than 100% or say 1.

      • Vaaimai says:

        Thanks again. Do you have any idea of efficiency of nuclear power plants? If a 1000 MW nuclear reactor is installed, what will be the power output?

  10. R K Jain says:

    Thermal efficiency of a thermal power plant is the ratio of electrical energy generated to the chemical energy of fuel consumed. For a subcritical plant it is below 42% for a new plant. What a plant is generating is the plant utilization factor. For a supercritical power plant the best thermal efficiency may be around 45-47%.

  11. S.kumar says:

    dear sumit kumar this information is too good for thermal power station. this is very much helpful for me and i like very much.

  12. Rajeev says:

    Dear Friends,
    It’s not updated data, Dear team please update the figer of Major Thermal Power Plants in India.

  13. Mahasvin says:

    Hi, This information is very helpful thanks,
    Is it possible to get list of upcoming thermal power plant within India.?

  14. This is very useful information, can any body share the list of upcoming plants in india
    With best regards,

    Somnath Shingare
    Cell: +91-9881247380

  15. sanjay kanani says:

    dear sir.,
    I want to know about which type of burner used in ukai thermal power plant in boiler
    and which type of burning is generate in furnance.

  16. rajiv ranjan says:

    Mejia thermal power plant of DVC is a major power plant in India.

  17. Dr.K.Ramalingam says:

    Great work. Data to update and add projects ongoing.

  18. Ankur Kumar says:

    What’s the current installed generation capacity?Kindly inform me.

  19. sai charan says:

    the explanation is super

  20. j vasanth kumar says:


  21. Kindly intimate per day consumption of coal in Gandhi Nagar and Wanakbori thermal Power stations during 2011-2012 and the % aveage Carbon in coal. Please make it convemeinet to routinely m,ention the amount of coal consumed each rear at each thermal power station and the percent carbon in coal.
    Kuldeep Chandra

    • says:

      Dear Mr. Chandra,

      You can find the same info either on CEA site or on the site Gujarat SLDC site. However,%of Carbon or ash in the coal used can only be given by the plant. from its side try to provide you latest info but getting specific info about plant is not easy.

  22. A. Bhattacharjee says:

    where can I get the following information:
    1. name of the coal source & type used for the thermal power plants located in West Bengal;
    2. comparision of the burning facilities of the plants located in West Bengal, and
    3. the criterion for magnetic separation;


  23. suraj says:


  24. manoj says:


  25. Garima Vats says:

    Dear Sir,

    I want to know if there is any database that lists down the cooling technology (open loop or closed loop) and technology for steam generation (Subcritical, super critical, ultra super critical etc) in India.

    Garima Vats

  26. Sheena Singh says:

    Can Coal conveyors be underground also? If so,what has to be the precautionary measures one has to keep in mind while constructing and maintaining underground coal conveyors?

  27. anupriya says:

    sir i have to know whether can we use any other energy instead of coal ?

    • says:

      Yes, We can we can use GAs, Diesel, Solar Power, Hydro Power, Wind Power , Nuclear, Bio-mass and many more

  28. RSMANI says:

    what is the approximate height of a chimney at Thermal power stations?

    • CHANDHU says:

      Chimney height is dependent on the Capacity of Generation. For 210MW unit chimney height is 230mtrs for 800MW it is of 270Mtrs.

  29. priyanka prakash bhosale says:

    sir i have information about adv.&disadv. of power plant in gujarat

  30. Temperature level between in FD fan & chimney ?

  31. Sir,
    We are having a 2X150 MW IPP unit at Beawar, Rajashthan. Its name is Shree Mega Power, unit of Shree Cement Group.

    Kindly update the same at your website.


  32. Rao.T.N says:

    Does the CFBC boiler operated lignite power plants gives >= to coal based plants ? If, so, what is the average PLF of lignite plants in India.

  33. Nawin Kumar says:


    Can Where can I get the current price of HFO, LDO and differnet types of Coal…


  34. Anil Yadav says:

    Dear All,

    Please let me know the upcoming thermal power plants in India whose BTG contract is awarded or yet to be awarded.

    Thanking you

  35. Manoj Kumar says:

    Dear Sir,

    Please send us the list of thermal power plants in india updated in pdf or Excel Format.
    we are the service provider and Spare parts providers for Gravimetric coal feed systems.

    It will be very helpfull to us if you provide the details with contact persons also.

    Thanks and Regards
    Manoj Kumar B
    +91 97437 42403

  36. Dear Sir,

    Please send us the list of thermal power plants in india updated in pdf or Excel Format.
    we are organized an exhibition about Bricks Industry,

    It will be very helpfull to us if you provide the details with contact persons also.

    Thanks and Regards
    B Niren
    +91 9825037133

  37. Please sent your detailed company profile for further needful.

  38. we require contact mail id of all major plants of india to introduce ourselves manufacturing various power plant spares

  39. Ahmar says:

    If the power requirement of a factory is x MW. What should be the size of the CPP??

  40. I am working as a power consultant in coimbatore,Tamilnadu.i need power for my client in tamilnadu.How can i get power generation companies list with details? If anyone in power sector,you can call me at 0 80127 89404,8508885788.mail :

    • says:

      Dear Mansih,

      You can contact to two exchange for list of Member Generators and also can contact power traders

  41. Anil Yadav says:

    Dear All,

    Will someone help me to get the spares requirement in thermal power plants. I will be thankful.

    mail id:

    Anil Yadav

  42. Ketan Patel says:

    Let me know CFBC power plant in INDIA with capacity & OEM of plant As we are manufacturer of Bed Nozzle & wish to register as vendor

  43. jeevendra gupta says:

    Dear Sir,

    Please send us the list of thermal power plants in india updated in pdf or Excel Format.
    we are organized an exhibition about Bricks Industry,

    It will be very helpfull to us if you provide the details with contact persons also.

    Thanks and Regards

  44. Patel MitulKumar KantiBhai says:

    dhuvaran tharemal power palnt in gujarat charotar hart


  45. avinash kumar says:

    details of power jobs send if occure

  46. deepankar bhilawe says:

    dear sir , presently i am working on geothermal on company as a geothermal engineer have any vacancy for geothermal engineer, basically i am from nagpur so koradi is near place from my place .

  47. Yogesh d. mane says:

    What type of coal is used in thermal power plant?

  48. Dear Sir,

    We are Authorized retrofitters of woodward Electronic Governor for Steam Turbines.

    Many of the older machines in the power plants will have only Hydraulic Governors. We can convert them to Electronic Governors which has a lot of advantages.

    We can conduct a seminar to scuh companies which may require our services. Can you please help us.


  49. Daryosh Tabesh says:

    Dear Sir,

    I am Daryosh Tabesh from Afghanistan currently doing my masters with TERI University new delhi. I am writing a report on industrial water use efficiency in India. I have a questionnaire of 2 pages I want to have an interview with 5 to 10 thermal power plant in Deli or nearby places if you can help me please.

    Thanking you in Advance,
    Phone: 09873751444

  50. V KARTHIKEYAN says:

    Dear sir,
    The above the comments,and information are use full,i need power plant related updates and discussion and technical knowledge sharing groups mail id or technical persons mail id.
    please do needfull.

  51. thillaivelan says:

    Dear Sir

    Please let me know the insulator requirement or thermal power projects in the states of kerela.

    Please do the needful.

  52. SIR,

  53. Kavitha N. Pillai says:

    Thank you for the information. It helped me to get some data for my research work. A must page to visit by students. A reliable source since data collected from other sources matched. could be visited by researchers for data collection.

  54. K.K.GARG says:

    After Coal Blocks auction decisions,which thermal plants will be coming up forv commissioning in 2015-16 F.Y. since these were waiting for availability of coal for operations?
    098 290 38864

  55. vishal aghara says:

    Dear sir,
    Let me know any refractory grinding material used in esp plant at thermal pawer plant. If you reply I thankfully to you.

  56. wahyu says:

    Interested for thermal power plant

  57. sushma says:

    please upload the thramal power plant basic info in telugu language for easy understand

  58. Sudheer Tiwari says:

    can any one send me the list of active Thermal power plants in India? Please.

  59. Elizabeth Mathai says:

    I have been trying to find out losses in power plants (thermal, solar, hydro) across India due to accidents(fire, explosion and the like) in the past 3 years, but have not been able to find any site that provides the same except for scattered newspaper clippings.
    Kindly advise as how to have an access to the said data.

  60. anil says:

    I want to learn more about thermal power plant

  61. I want job. I am doing training in national power training institute in Npti NR Badarpur New Delhi

  62. Anand Mishra says:

    Dear sir,
    Im Anand Mishra from Trio Insulations. We do Hot &Cold Insulation Services. We have done many projects in various chemical and pharmaceutical industries and looking forward to work with power plants in India. Kindly give me your valuable information.
    Thanking you,

    Your sincerely,
    Anand Mishra

    • lavkush Pandey says:

      I want to job in power sector but i have experience RAW WATER PIPE LINES PROJECT. very interested for plant job so please contact no me. 8878802010.

  63. Dev says:

    If once power is generated ,can we store for future use or should we transmit to any load.

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