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Power sector of Andhra Pradesh

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Power sector of Andhra Pradesh is divided into 4 categories namely Regulation, Generation, Transmission and Distribution. Andhra Pradesh Electricity Regulatory Commission (APERC) is the regulatory body.[1] APGENCO deals with the electricity production and also maintenance, proposes new projects and upgrades existing ones as well.[2] The APGENCO also set up a Special Purpose Vehicle (SPV), named as Andhra Pradesh Power Development Company Limited (APPDCL), a joint venture company of APGENCO (with 50% equity) and IL&FS (50% equity) to set up Krishnapatanam thermal power project (2x800 MW).[3]

APTRANSCO is set up for transmission of power.[4] APGENCO, APPDCL, NTPC and other private firms contribute to the generation of power in the state of Andhra Pradesh.[5][6][7] Andhra Pradesh has become the second state in India to achieve 100% electrification of all households.[8] Weighted average cost of power generation and purchases is INR 3.45 per kWh which is highest in the country.[9] Andhra Pradesh is also leader by installing 433 nos electric vehicle charging stations (EVCS) out of 927 nos installed in the entire country as on 30 June 2020.[10]

Under the program of installing 500 GW capacity of renewable power capacity by 2030, nearly 59 GW (25%) of solar and wind power is identified out of 236.58 GW in three districts of the state.[11]

The newly formed Andhra Pradesh Green Energy Corporation Limited (APGECL), a 100% subsidiary of APGENCO, will be the trading agency/licensee for the 10 GW solar project in a phased manner and for connecting it to the grid.[12] The 10 GW solar projects would be used to meet the entire agriculture power consumption which will be met during the day time for nine hours duration daily.[13] Andhra Pradesh is also leading in installation of solar power /off grid agriculture pump sets.[14] A renewable energy export policy for Andhra Pradesh was also announced to facilitate the setting up of 120 GW solar, wind and solar-wind hybrid energy parks by using 0.5 million acres of land.[15] New & Renewable Energy Development Corporation of Andhra Pradesh (NREDCAP), a state owned company, is actively involved in promoting renewable energy projects in the state.[16] Roof top solar power cost/unit in the state are falling below the domestic power tariff.[17]

The total installed utility power generation capacity is nearly 24,854 MW in the state as of 31 March 2020[18] APtransCo has made long term power purchase agreements for 19,068 MW as of 31 March 2019.[19][20] The per capita electricity consumption is 1234 units with 63,143 million KWh gross electricity supplied in the year 2018–19.[19][21] The performance of Krishnapatanam thermal power station (2X800 MW) with super critical pressure technology is not satisfactory even after one year commercial operation as the units rarely operate at rated capacity forcing the state to purchase costly power from day ahead trading in IEX.[22][23]

Power sector of Andhra Pradesh flow chart
Dr Narla Tata Rao Thermal Power Station (500 MW Unit)

Short term power purchases

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APDisComs purchase regularly from the energy exchange, etc. to meet the peak load and energy shortages. As the power purchases/sales are done on daily basis without proper planning and optimum utilization of APGENCO power generation capacity, APERC has given guidelines to the DisComs for implementation while making short term (less than one year duration) purchases and sales in the year 2022.[24][25]

Non-renewable

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Thermal power

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Map of coal based thermal power plants in the Indian state of Andhra Pradesh
Krishnapatnam
Krishnapatnam
Ibrahimpatnam
Ibrahimpatnam
Parawada
Parawada
Muddanur
Muddanur
Thamminapatnam
Thamminapatnam
Pudimadaka
Pudimadaka
Polaki
Polaki
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Map of coal based thermal power plants in the Indian state of Andhra Pradesh. Blue are operational and Red are proposed[26]

Thermal power plants are based on the fuel coal, gas, diesel etc. Public sector undertaking NTPC, state level power generating companies and private firms are engaged in this sector for power generation.

Currently operating coal based thermal power plants in Andhra Pradesh are listed below.[27][28]

Name Operator Location District Sector Capacity
(MW)		 Coordinates
Simhadri Super Thermal Power Plant NTPC Parawada Visakhapatnam Central 2,000 17°35′38″N 83°5′23″E / 17.59389°N 83.08972°E / 17.59389; 83.08972 (Simhadri Super Thermal Power Plant)
Dr Narla Tatarao TPS APGENCO Vijayawada Krishna State 2,560 16°35′58″N 80°32′12″E / 16.59944°N 80.53667°E / 16.59944; 80.53667 (Dr Narla Tata Rao Thermal Power Station)
Rayalaseema Thermal Power Station[29] APGENCO Muddanur Kadapa State 1,650 14°42′14″N 78°27′29″E / 14.70389°N 78.45806°E / 14.70389; 78.45806 (Rayalaseema Thermal Power Station)
Sri Damodaram Sanjeevaiah Thermal Power Station APPDCL Krishnapatnam Nellore Joint 2,400 14°19′39″N 80°07′15″E / 14.32750°N 80.12083°E / 14.32750; 80.12083 (Sri Damodaram Sanjeevaiah Thermal Power Station)
Vizag Thermal Power Station Hinduja Gajuwaka Visakhapatnam Private 1,040 17°33′45″N 83°8′15″E / 17.56250°N 83.13750°E / 17.56250; 83.13750 (Hinduja Thermal Power Station)
Simhapuri Thermal Power Station SEPL Krishnapatanam Nellore Private 600 14°12′35″N 80°05′23″E / 14.20972°N 80.08972°E / 14.20972; 80.08972 (Simhapuri Thermal Power Station)
Meenakshi Thermal Power Station MEPL Krishnapatanam Nellore Private 1,000 14°12′57″N 80°05′19″E / 14.21583°N 80.08861°E / 14.21583; 80.08861 (Meenakshi Thermal Power Station)
Sembcorp Energy India Limited SEIL Krishnapatanam Nellore Private 1,320 14°19′45″N 80°08′27″E / 14.32917°N 80.14083°E / 14.32917; 80.14083 (Pynampuram Power Station)
SGPL Power Station SGPL Krishnapatanam Nellore Private 1,320 14°21′5″N 80°08′37″E / 14.35139°N 80.14361°E / 14.35139; 80.14361 (SGPL Power Station)
TOTAL 13,890

Gas fuel-based

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Map of currently operating combined cycle gas turbine power plants in the Indian state of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
Power sector of Andhra Pradesh
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Map of currently operating combined cycle gas turbine power plants in the Indian state of Andhra Pradesh

The following are the list of presently installed combined cycle gas turbine power plants and diesel engine power plants in the state. However many of these power plants are not operating due to non-availability of natural gas and high cost of liquid fuels.[30]

Power station Operator Location District Sector Capacity
(MW)		 Plant Coordinates
APGPCL Plant APGPCL Vijjeswaram W. Godavari Joint 272 16°56′02″N 81°43′27″E / 16.93389°N 81.72417°E / 16.93389; 81.72417 (APGPCL Plant)
Lanco Kondapalli Power Plant Lanco Infratech Kondapalli Krishna Private 1466 16°38′20″N 80°33′00″E / 16.63889°N 80.55000°E / 16.63889; 80.55000 (Lanco Kondapalli Power Plant)
Gautami Combined Cycle Power Plant GVK Peddapuram E. Godavari Private 464 17°02′21″N 82°08′43″E / 17.03917°N 82.14528°E / 17.03917; 82.14528 (Gautami Combined Cycle Power Plant)
Konaseema Combined Cycle Power Plant Konaseema Gas Power Limited (KGPL) Ravulapalem E. Godavari Private 445 16°44′05″N 81°51′44″E / 16.73472°N 81.86222°E / 16.73472; 81.86222 (Konaseema Combined Cycle Power Plant)
Vemagiri Combined Cycle Power Plant GMR Vemagiri E. Godavari Private 370 16°55′29″N 81°48′46″E / 16.92472°N 81.81278°E / 16.92472; 81.81278 (Vemagiri Combined Cycle Power Plant)
GMR Rajamundry Combined Cycle Power Plant[31] GMR Vemagiri E. Godavari Private 768 16°55′28″N 81°48′46″E / 16.92444°N 81.81278°E / 16.92444; 81.81278 (Vemagiri Combined Cycle Power Plant)
Samarlakota Combined Cycle Power Plant[32] Reliance Samarlakota E. Godavari Private 1870 17°02′19″N 82°08′05″E / 17.03861°N 82.13472°E / 17.03861; 82.13472 (Samarlakota Combined Cycle Power Plant)
Godavari Gas Power Plant[33] APGENCO Jegurupadu E. Godavari State 216 16°55′55″N 81°51′37″E / 16.93194°N 81.86028°E / 16.93194; 81.86028 (Godavari Gas Power Plant)
Jegurupadu Combined Cycle Power Plant GVK Jegurupadu E. Godavari Private 229 16°55′54″N 81°51′36″E / 16.93167°N 81.86000°E / 16.93167; 81.86000 (Jegurupadu Combined Cycle Power Plant)
Spectrum Combined Cycle Power Plant Spectrum Kakinada E. Godavari Private 209 17°03′31″N 82°18′34″E / 17.05861°N 82.30944°E / 17.05861; 82.30944 (Spectrum Combined Cycle Power Plant)
GMR (barge mounted) Power Plant GMR Kakinada E. Godavari Private 237 17°03′32″N 82°18′33″E / 17.05889°N 82.30917°E / 17.05889; 82.30917 (GMR barge mounted power station)
LVS Diesel Engine Power Station Greenko Vishakhapatnam Visakhapatnam Private 37 17°50′45″N 83°14′13″E / 17.84583°N 83.23694°E / 17.84583; 83.23694 (LVS Power Ltd)
Panduranga CCPP PESPL Annadevarapeta W. Godavari Private 116 17°07′45″N 81°36′09″E / 17.12917°N 81.60250°E / 17.12917; 81.60250 (Panduranga CCPP)
RVK Energy power plant[34] KSK Energy Ventures Rajahmundry E. Godavari Private 436
Sriba power plant Sriba industries Chigurukota Krishna Private 30
Silkroad sugar power plant EID Parry Kakinada E. Godavari Private 35
Srivathsa Power plant Asian Genco Private 17
Total 7,217

Renewable

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Hydroelectric

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This is the list of major hydroelectric power plants in Andhra Pradesh.[35]

Srisailam Dam
Srisailam right bank power house
Power station name Operator Location Sector Unit wise Capacity
MW		 Capacity

MW[23]

Donkarayi PH APGENCO E. Godavari State 1x25 25.00
Hampi canal Power House (PH) APGENCO Joint project of AP, TS & Karnataka
Located in Karnataka		 State 4 x 9
(AP Share-28.8)		 28.80
Lower Sileru PH APGENCO E. Godavari State 4 x 115 460.00
Machkund PH APGENCO Joint project of AP, TS & Odisha
Located in Odisha		 State 3 x 17 + 3 x 23
(AP Share-84)		 84.00
Nagarjuna Sagar Right Canal PH APGENCO Nagarjuna Sagar Dam, Guntur district State 3 x 30 90.00
Nagarjuna Sagar tail pond PH APGENCO Nagarjuna Sagar Dam, Guntur district State 2 x 25 50.00
Penna Ahobilam PH APGENCO Korrakodu, Anantapur district State 2 x 10 20.00
Srisailam Right Bank PH APGENCO Srisailam, Kurnool State 7 x 110 770.00
TB Dam PH APGENCO Joint project of AP, TS & Karnataka
Located in Karnataka		 State 4 × 9
(AP Share-28.8)		 28.80
Upper Sileru PH APGENCO Visakhapatnam State 4 x 60 240.00
Somasila PH Balaji Energy Nellore Private 2 x 5, 2 x 4, 1 x 2, 1 x 3[36][37] 23.00
Chettipeta Mini Hydel[38] APGENCO West Godavari district State 2 x 0.5 1.00
Polavaram Hydro-Electric project APGENCO Anguluru, East Godavari district State 12 x 80
Under Construction[39]
Pinnapuram Pumped Storage Project (PSP) Greenko Energy near Nandyal, Kurnool district Private 4 x 240, 2 x 120
Under Construction[40][41]
Veeraballi PSP Astha Green near Veeraballi, Kadapa district Private 2720 MW
Under investigation[42]
Upper Sileru PSP APGENCO near Sileru village, Visakhapatnam State 9 x 150 MW
Under hold due to very high cost[43]
Chitravati PSP APGENCO near Peddakotla village, Anantapuramu district State 2 x 250 MW[44]
Under investigation[45]
Singanamala PSP NREDCAP Anantapuramu district State 800 MW
Under investigation[46]
Overall capacity in (MW)[20] 1820.60

Pumped storage hydroelectricity projects

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Pumped hydroelectric energy storage (PHES) projects with high water head are the cheap means of converting intermittent renewable power generation sources like solar PV or wind power in to base load supply for round the clock needs throughout the year.[47][48] AP state is endowed with vast PHES potential adequate to utilise its vast solar PV power generation potential (above 1,000,000 MW installed on 16,000 km2 marginal lands) to meet ultimate green energy requirements of its peak population (60 million).[49] AP is considering on a major scale to install PHES projects to make available the surplus wind / solar power during the peak load hours.[50][51] PHESs also generate income, in addition to hydroelectricity cess/royalty, to the state in the form of water use charges at commercial rates for the evaporation loss or consumptive water from the reservoirs. The area occupied by the high head PHES is less than the area occupied by the equivalent battery energy storage system (BESS) housed in a three storied building. High head PHES installation cost (< US$40 per KWh in a day) is less than the cost of land and buildings required to house the equivalent BESS.[52][53] PHES are more suitable in India where energy and water storage needs are complementary.[53][54] Unlike the static BESS, the rotating turbo-generator of a PHES will enhance dynamic inertia (GD2) of the grid which contributes to a stable grid to ride through the power disturbances when power generation in the grid is dominated by the static solar PV power.[55] Variable speed PHES plants also deliver the power grid ancillary services.[56] In high head PHES, unlined pressure tunnels/shafts are constructed to the extent feasible for reducing construction cost.[57]

Blast-hole drilling at an opencast mine.

The water reservoir of a PHES is created by building embankment dams wherever required up to the required height and length. The rock required for building the dams is excavated from the reservoir area. Cheaper drilling and blasting method is extensively used deploying state of the art earth moving equipment because huge quantity of rock excavation is required for the construction of the rock-fill dams.[58][59]

A rock-fill embankment dam.

Polavaram right bank PHES: A 103,000 MW PHES project is under investigation with an upper reservoir, located near Parantapalle hamlet in West Godavari district, with 90 tmcft live storage at 700 m msl full reservoir level (FRL). The turkey-nest type upper reservoir is 18 km long from north to south and 1.1 km wide and its water surface area is 16 km2 with 200 m water depth and nearly 90 tmcft live storage.[60] The adjacent Polavaram reservoir at FRL 45 m msl with 194 tmcft gross storage is the lower reservoir as perennial water source. The average water head available is 600 m with a provision to draw 33 tmcft/day from the Polavaram reservoir by the PHES units located in semi open or underground power houses. To run the PHES on daily basis, the lower reservoir is to be kept empty by 33 tmcft below its FRL for holding the water released by PHES in generation mode. Another 33 tmcft is used to compensate the loss of storage capacity in the lower reservoir. This buffer storage is released in to lower reservoir for irrigation, etc. needs once in a year at the end of monsoon year and it is replenished at the earliest from the flood water inflows into the lower reservoir. Also seepage and evaporation losses from the upper reservoir are met from the buffer storage sourced from flood waters and not drawn from the lower reservoir storage. The excess buffer storage maintained in this upper reservoir can also serve up to 24 tmcft for other PHESs in the state which are using Godavari basin water and have no buffer storage of their own (ex: Jalaput PHES). The upper reservoir can be further expanded by 3.5 km length on its south side to enhance the live / buffer storage substantially. The PHES project can produce 412 billion KWh at 4000 hours/year or 12 hours/day operation in generation mode by consuming the surplus power generated from the solar and wind power plants during the day time. This PHES can also moderate the severe floods by utilizing empty volume kept in the lower reservoir or operating in pump mode (maximum 7.63 lakh cusecs) to fill the upper reservoir. In case of emergency / repairs, the entire water storage in the upper reservoir can be emptied safely into the lower reservoir / river within 24 hours by running the PHES in generation mode.

Srisailam right bank PHES: A 77,000 MW PHES project is feasible with an upper reservoir, located on the right bank side within 1000 m distance of Srisailam reservoir, with 87 tmcft live storage at 650 m msl FRL. The reservoir bunds are constructed on 500 m msl contour line by 155 m high and the water surface area of the upper reservoir is nearly 20 km2. The adjacent Srisailam reservoir at FRL 270 m msl with 185 tmcft live storage is the lower reservoir with perennial water source. The average water head available is 340 m with provision to draw water from the Srisailam reservoir by the PHES units located in semi open or underground power houses. The PHES project can produce 308 billion KWh at 4000 hours/year or 12 hours/day operation in generation mode. Only 43.5 tmcft (50%) reservoir storage is used for power generation on daily basis and the remaining half kept as buffer storage to compensate the loss of storage in downstream reservoir due to PHES by releasing water once in a year in to the Srisailam reservoir to meet irrigation water requirements. The buffer storage is replenished later at the earliest during the monsoon/floods. This PHES can also moderate the severe floods by utilizing empty volume kept in the lower reservoir or operating in pump mode (maximum 10 lakh cusecs) to fill the upper reservoir.

Feasible PHES projects

[edit]
List of feasible PHES locations
PHES name/
lower reservoir[61] 		Power potential
(MW) 		Power generation
(Billion KWh/yr) 		Upper reservoir Average water
head (meters) 		Remarks
Location Coordinate River basin Water area
(km2)		 Live storage
(tmcft)		 FRL
(m msl)		 MDDL
(m msl)
Polavaram right bank PHES 103,000 412 West Godavari district 17°27′33″N 81°29′43″E / 17.45917°N 81.49528°E / 17.45917; 81.49528 (Polavavaram right bank PHES) Godavari 16 90 700 500 600 57 tmcft buffer storage available. The distance between the two reservoirs is nearly 1.7 km.
Srisailam right bank PHES 77,000 308 Kurnool district 16°02′33″N 78°30′51″E / 16.04250°N 78.51417°E / 16.04250; 78.51417 (Srisailam right bank PHEP) Krishna 20 87 650 500 340 43.5 tmcft buffer storage included. The distance between the two reservoirs is nearly 1.1 km.
Gandikota PHES1 28,000 112 Kadapa district 14°49′47″N 78°13′41″E / 14.82972°N 78.22806°E / 14.82972; 78.22806 (Gandikota PHES1) Penna 21 52 435 335 210 Buffer storage 26 tmcft provided. The distance between the two reservoirs is nearly 2.1 km.
Gandikota PHES2[62] 600 1.12 Kadapa district 14°46′29″N 78°17′7″E / 14.77472°N 78.28528°E / 14.77472; 78.28528 (Gandikota PHES2) Penna 1 0.16 515 505 303 It is a peaking PHES with six hours daily operation in generation mode. No buffer storage is provided. The distance between the two reservoirs is nearly 2.8 km.
Paidipalem PHES1 1,850 7.4 Kadapa district 14°43′47″N 78°11′9″E / 14.72972°N 78.18583°E / 14.72972; 78.18583 (Paidipalem PHES1) Penna 1 2.5 600 510 285 Buffer storage 1.25 tmcft provided. The distance between the two reservoirs is nearly 3.1 km.
Paidipalem PHES2 2,750 11 Kadapa district 14°41′21″N 78°13′25″E / 14.68917°N 78.22361°E / 14.68917; 78.22361 (Paidipalem PHES2) Penna 1.5 3.7 600 500 285 Buffer storage 1.85 tmcft provided. The distance between the two reservoirs is nearly 2.9 km.
Buggavanka PHES 600 2.4 Kadapa district 14°24′5″N 78°52′15″E / 14.40139°N 78.87083°E / 14.40139; 78.87083 (Buggavanka PHES) Penna 0.8 0.9 470 410 260 Buffer storage 0.45 tmcft provided. The distance between the two reservoirs is nearly 3.5 km.
Annamayya PHES[63] 1150 4.6 Kadapa district 14°12′25″N 78°57′51″E / 14.20694°N 78.96417°E / 14.20694; 78.96417 (Annamayya PHES) Penna 1.1 1.6 555 455 285 Buffer storage 0.8 tmcft provided. Distance between the two reservoirs is nearly 6 km.
Mylavaram PHES 14,000 56 Kadapa district 14°48′1″N 78°16′35″E / 14.80028°N 78.27639°E / 14.80028; 78.27639 (Mylavaram PHES) Penna 9 20 500 375 275 Buffer storage 10 tmcft provided. The distance between the two reservoirs is nearly 3.7 km.
Brahmamsagar PHES 13,000 52 Kadapa district 14°46′27″N 78°52′3″E / 14.77417°N 78.86750°E / 14.77417; 78.86750 (Brahmamsagar PHES) Penna 9.5 38 400 250 130 Buffer storage 19 tmcft provided. The distance between the two reservoirs is nearly 1.5 km.
Telugu Ganga subsidiary reservoirs PHES 2,600 10.4 Kurnool district 14°51′25″N 78°43′51″E / 14.85694°N 78.73083°E / 14.85694; 78.73083 (Telugu Ganga PHES) Penna 4 8 400 250 120 Buffer storage 4 tmcft provided. The distance between the two reservoirs is nearly 1.5 km.
Owk PHES1 4,700 18.8 Kurnool district 15°14′51″N 78°2′49″E / 15.24750°N 78.04694°E / 15.24750; 78.04694 (Owk PHES1) Penna 100 210 500 350 220 Works on a seasonal basis to store 201.7 tmcft Krishna and Godavari waters as well as PHES on daily basis. The stored water is also used as carryover storage to meet water shortages in drought years. Buffer storage 4.15 tmcft included. This upper reservoir will supply irrigation water to the Handri catchment area in the Kurnool district and the left bank side of the Penna river in the Ananthapur district including water supply augmentation to the Handri-Neeva project. This upper reservoir is so planned by its area location to cut across the local Erramala hill range from east to west to supply irrigation water mostly by gravity. The distance between the two reservoirs is nearly 5.7 km.
Owk PHES2 [64] 800 1.65 Kurnool district 15°9′37″N 78°4′5″E / 15.16028°N 78.06806°E / 15.16028; 78.06806 (Owk PHES2) Penna 0.6 0.4 400 380 165 Peaking PHES for 6 hours daily operation. No Buffer storage is provided. The distance between the two reservoirs is nearly 1.5 km.
Gorakallu PHES 12,500 50 Kurnool district 15°35′33″N 78°22′17″E / 15.59250°N 78.37139°E / 15.59250; 78.37139 (Gorakallu PHES) Penna 37 100 450 300 170 Works on a seasonal basis to store 71.4 tmcft Krishna and Godavari waters and otherwise as PHES on daily basis. The stored water is also used as carryover storage to meet water shortages in drought years. Buffer storage 14.28 tmcft included. The distance between the two reservoirs is nearly 2.3 km.
Velugodu PHES 7,800 31 Kurnool district 15°42′21″N 78°39′25″E / 15.70583°N 78.65694°E / 15.70583; 78.65694 (veligodu PHES) Penna 40 100 420 270 100 Works on a seasonal basis to store 70 tmcft Krishna and Godavari waters and otherwise as PHES on daily basis. The stored water is also used as carryover storage to meet water shortages in drought years. Buffer storage 15 tmcft included. The distance between the two reservoirs is nearly 3.1 km.
Mid Pennar PHES 2,600 10.4 Anantapur district 14°52′47″N 77°23′27″E / 14.87972°N 77.39083°E / 14.87972; 77.39083 (Mid Pennar PHES) Penna 3.75 10 525 375 100 Buffer storage 5 tmcft included. The distance between the two reservoirs is nearly 0.7 km.
Chitravati PHES[65] 500 0.95 Anantapur district 14°34′27″N 77°56′3″E / 14.57417°N 77.93417°E / 14.57417; 77.93417 (Chitravati PHES) Penna 0.5 0.21 475 455 176 Peaking load PHES. No buffer storage is included. The distance between the two reservoirs is nearly 0.81 km.
Somasila PHES[66] 1,200 2.3 Nellore district 14°30′57″N 79°16′25″E / 14.51583°N 79.27361°E / 14.51583; 79.27361 (Somasila PHES) Penna 1 0.18 624 600 511 Peaking load PHES. No buffer storage is included. The distance between the two reservoirs is nearly 2.9 km.
Kalyani PHES 3,700 14.8 Chittoor district 13°43′9″N 79°18′47″E / 13.71917°N 79.31306°E / 13.71917; 79.31306 (Kalyani PHES) Swarnamukhi 1.5 1.8 1100 1000 790 Buffer storage 0.9 tmcft included. The distance between the two reservoirs is nearly 7.5 km. The upper reservoir of the PHES can also supply water to Tirumala in case of water shortages.
Yeleru PHES 5,500 22 East Godavari district 17°20′1″N 82°9′23″E / 17.33361°N 82.15639°E / 17.33361; 82.15639 (Yeleru PHES) Yeleru 2.00 5.3 500 350 400 Buffer storage 2.65 tmcft included. The distance between the two reservoirs is nearly 5.5 km.
Tandava PHES 9,200 36.8 Visakhapatnam district 17°43′35″N 82°27′47″E / 17.72639°N 82.46306°E / 17.72639; 82.46306 (Tandava PHES) Tandava 1.50 4 1050 850 875 Buffer storage 2 tmcft included. The distance between the two reservoirs is nearly 7.5 km.
Raiwada PHES 2,350 9.4 Visakhapatnam district 18°3′17″N 82°54′55″E / 18.05472°N 82.91528°E / 18.05472; 82.91528 (Raiwada PHES) Sarada 0.50 2 635 485 450 Buffer storage 1 tmcft included. The distance between the two reservoirs is nearly 4.85 km.
Pedderu PHES 1,425 5.5 Visakhapatnam district 17°52′37″N 82°40′9″E / 17.87694°N 82.66917°E / 17.87694; 82.66917 (Pedderu PHES) Sarada 0.25 0.7 950 850 780 Buffer storage 0.35 tmcft included. The distance between the two reservoirs is nearly 3.1 km. Water to rock ratio at least 2.
Konam PHES 2,200 8.8 Visakhapatnam district 17°55′47″N 82°40′19″E / 17.92972°N 82.67194°E / 17.92972; 82.67194 (Konam PHES) Sarada 1.2 1.7 725 625 495 Buffer storage 0.85 tmcft included. The distance between the two reservoirs is nearly 5.8 km.
NTR PHES 650 2.6 Visakhapatnam district 17°57′35″N 82°46′35″E / 17.95972°N 82.77639°E / 17.95972; 82.77639 (NTR PHES) Sarada 0.2 0.4 775 700 640 Buffer storage 0.2 tmcft included. The distance between the two reservoirs is nearly 2.6 km.
Varaha PHES 1,300 4.2 Visakhapatnam district 17°49′25″N 82°42′5″E / 17.82361°N 82.70139°E / 17.82361; 82.70139 (Varaha PHES) Varaha 0.52 0.75 820 750 660 Buffer storage 0.37 tmcft included. The distance between the two reservoirs is nearly 3.6 km. Water to rock ratio at least 2.
Tatipudi PHES 9,000 36 Vizianagaram district 18°15′25″N 83°8′41″E / 18.25694°N 83.14472°E / 18.25694; 83.14472 (Tatipudi PHES) Gosthani 2 6.5 700 500 535 Buffer storage 3.25 tmcft included. Distance between the two reservoirs is nearly 7.5 km.
Andra PHES 2,500 10 Vizianagaram district 18°22′7″N 83°9′55″E / 18.36861°N 83.16528°E / 18.36861; 83.16528 (Andra PHES) Champavati 0.7 1.8 800 710 520 Buffer storage 0.9 tmcft included. Distance between the two reservoirs is nearly 4.3 km.
Peddagadda PHES 3,100 12.4 Vizianagaram district 18°23′41″N 83°4′41″E / 18.39472°N 83.07806°E / 18.39472; 83.07806 (Peddagadda PHES) Nagavali 1.8 2 790 650 600 Buffer storage 1 tmcft included. Distance between the two reservoirs is nearly 7 km.
Vengalaraya Sagar PHES 2,250 9 Vizianagaram district 18°37′7″N 83°14′55″E / 18.61861°N 83.24861°E / 18.61861; 83.24861 (Vengalaraya Sagar PHES) Nagavali 0.5 2 660 510 430 Buffer storage 1 tmcft included. The distance between the two reservoirs is nearly 2.65 km. Water to rock ratio at least 2.
Vattigedda PHES 1,250 5 Vizianagaram district 18°49′41″N 83°37′23″E / 18.82806°N 83.62306°E / 18.82806; 83.62306 (Vattigadda PHES) Nagavali 0.9 1.8 440 290 255 Buffer storage 0.9 tmcft included. The distance between the two reservoirs is nearly 2.85 km. Water to rock ratio at least 2.
Nagavali PHES 250 1 Vizianagaram district 18°36′57″N 83°50′1″E / 18.61583°N 83.83361°E / 18.61583; 83.83361 (Nagavali PHES) Nagavali 4 10 300 140 200 Pumps water @ 5500 cusecs on a seasonal basis to store 9.75 tmcft Nagavali river flood waters. The stored water during monsoon months is released back in later months during the night time for irrigation needs. Rest of the year, PHES works on a daily basis to generate power during nighttime. The stored water is also used as carryover storage to meet water shortages in drought years. A new barrage with 0.25 tmcft live storage will be constructed near 18°32′57″N 83°48′5″E / 18.54917°N 83.80139°E / 18.54917; 83.80139 (Nagavali River) across the Nagavali river to divert water to the tunnel of the PHES. Buffer storage 0.25 tmcft included. The distance between the upper reservoir and the river is nearly 8.25 km.
Jhanjavati PHES 2,350 9.4 Vizianagaram district 18°53′7″N 83°23′51″E / 18.88528°N 83.39750°E / 18.88528; 83.39750 (Jhanjavati PHES) Nagavali 0.5 1.5 530 330 300 No buffer storage required as the lower reservoir is not used presently. The distance between the two reservoirs is nearly 2.37 km. Water to rock ratio at least 2. The unused reservoir area on the right of the Jhanjavati river is isolated from the river by constructing a 2.2 km long earth bund up to 150 m msl to create 1.5 tmcft water storage for using as a lower reservoir.
Hiramandalam PHES[67] 2,500 10 Srikakulam district 18°41′19″N 83°52′57″E / 18.68861°N 83.88250°E / 18.68861; 83.88250 (Hiramandalam PHES) Vamsadhara 3 7 240 90 135 3.5 tmcft buffer storage included. The distance between the two reservoirs is nearly 4.5 km.
Gotta barrage PHES[68] 750 + 10,000 = 10,750 1.5 Srikakulam district 18°41′39″N 84°1′15″E / 18.69417°N 84.02083°E / 18.69417; 84.02083 (Gotta barrage PHES) Vamsadhara 40 80 220 70 135 The main purpose of this PHES is to store up to 79 tmcft flood waters which are going waste to the sea every year. The stored water is also used as carryover storage to meet water shortages in drought years. The PHES pumps flood water @ 23,000 cusecs from the Vamsdhara river during the monsoon months and works as PHES the rest of the year. Buffer storage 0.5 tmcft included. The distance between the two reservoirs is nearly 7.3 km.

The upper reservoir of this PHES can also be connected to the Hiramandalam reservoir at 18°40′5″N 83°56′37″E / 18.66806°N 83.94361°E / 18.66806; 83.94361 (Hiramandalam reservoir) (20 tmcft storage) by 9 km long tunnels to use 16.5 tmcft per day by installing a 10,000 MW PHES to generate power for nine months duration in a year when the reservoir is empty by 16.5 tmcft or more.

Kumbum PHES 2,200 8.8 Prakasam district 15°37′35″N 79°5′1″E / 15.62639°N 79.08361°E / 15.62639; 79.08361 (Kumbum PHES) Gundlakamma 5.5 5.8 380 255 140 Buffer storage 2.9 tmcft included. The distance between the two reservoirs is nearly 2.3 km.
Nallamala Sagar PHES1 26,500 106 Prakasam district 15°40′37″N 79°5′5″E / 15.67694°N 79.08472°E / 15.67694; 79.08472 (Nallamala PHES1) Gundlakamma 77 84.5 380 240 120 Buffer storage 42.25 tmcft included. The distance between the two reservoirs is nearly 2 km.
Nallamala Sagar PHES2 900 3.6 Prakasam district 15°39′25″N 79°4′23″E / 15.65694°N 79.07306°E / 15.65694; 79.07306 (Nallamala PHES2) Gundlakamma 1.5 2.5 380 230 130 Buffer storage 1.25 tmcft included. Distance between the two reservoirs is nearly 1.75 km.
Nagarjuna Sagar Dam Right Bank PHES 1,500 1.5 Kurnool district 16°5′39″N 78°54′51″E / 16.09417°N 78.91417°E / 16.09417; 78.91417 (Nagarjunasagar Dam Right Bank PHES) Krishna - - 270 245 90 Mainly works to pump water from existing Nagarjunasagar reservoir into existing Srisailam reservoir on a seasonal basis to store Krishna and Godavari waters and otherwise as PHES on daily basis. The distance between the two reservoirs is nearly 3.1 km.
Nagarjuna Sagar Right Bank PHES1 37,000 148 Prakasam district 16°5′51″N 78°55′51″E / 16.09750°N 78.93083°E / 16.09750; 78.93083 (Nagarjunasagar Right Bank PHES1) Krishna 8 34 650 500 425 Buffer storage 17 tmcft provided. The minimum level to be maintained in Nagarjunasagar reservoir is 164 m msl. The distance between the two reservoirs is nearly 1.1 km.
Nagarjuna Sagar Right Bank PHES2 112,000 448 Prakasam district 16°7′45″N 78°56′19″E / 16.12917°N 78.93861°E / 16.12917; 78.93861 (Nagarjunasagar Right Bank PHES2) Krishna 21 101 650 500 425 Buffer storage 50.5 tmcft provided. The minimum level to be maintained in Nagarjunasagar reservoir is 164 m msl. The distance between the two reservoirs is nearly 1.5 km.
Nagarjuna Sagar Right Bank PHES3 66,000 264 Prakasam district 16°10′7″N 78°55′35″E / 16.16861°N 78.92639°E / 16.16861; 78.92639 (Nagarjunasagar Right Bank PHES3) Krishna 11 59 650 500 428 Buffer storage 29.5 tmcft provided. The minimum level to be maintained in Nagarjunasagar reservoir is 164 m msl and the corresponding loss of live storage located below this level in Nagarjunasagar reservoir can be included in the buffer storage of PHESs. The distance between the two reservoirs is nearly 2.9 km.
Nagarjuna Sagar tail pond PHES 1,500 1.0 Guntur district 16°34′39″N 79°20′25″E / 16.57750°N 79.34028°E / 16.57750; 79.34028 (Nagarjuna Sagar tail pond PHES) Krishna - - 180 164 105 Mainly works to pump water from existing Nagarjuna Sagar tail pond into existing Nagarjuna Sagar reservoir on a seasonal basis to store Krishna and Godavari waters and otherwise as PHES on daily basis.
Pulichintala Right Bank PHES 300 0.2 Guntur district 16°37′49″N 79°31′11″E / 16.63028°N 79.51972°E / 16.63028; 79.51972 (Pulichintala Right Bank PHES) Krishna - 2 75 72 25 Mainly works to pump water from existing Pulichintala reservoir into existing Nagarjuna Sagar tail pond on a seasonal basis to store Krishna and Godavari waters and otherwise as PHES on daily basis.
Vykuntapuram PHES 400 0.2 Guntur district 16°46′43″N 80°3′55″E / 16.77861°N 80.06528°E / 16.77861; 80.06528 (Vykuntapuram PHES) Krishna - - 55 50 25 Mainly works to pump water from backwaters of new Vykuntapuram barrage across Krishna river upstream of Prakasam Barrage to existing Pulichintala reservoir on a seasonal basis to store Krishna and Godavari waters and otherwise as PHES on daily basis.
Jalaput PHES 65,000 260 Visakhapatnam district 18°26′53″N 82°28′11″E / 18.44806°N 82.46972°E / 18.44806; 82.46972 (Jalaputk PHES) Sileru - 31.5 838.4 818.6 380 The PHES is constructed by connecting existing Jalaput reservoir with existing Balimela Reservoir (MDDL at 439 m msl, FRL at 462 m msl and live storage 95 tmcft) by a 13 km long unlined pressure tunnel/penstock with underground power station.[57]
Donkarayi PHES 35,000 140 Visakhapatnam district 17°54′47″N 81°51′45″E / 17.91306°N 81.86250°E / 17.91306; 81.86250 (Donkarayi PHES) Sileru 20 26 900 750 550 13 tmcft buffer storage provided. The buffer storage can be enhanced by another 35 tmcft by increasing the FRL to 950 m msl to serve other PHES which are using Godavari water. Distance between the two reservoirs is nearly 3.7 km.
Bhupathipalem PHES 800 3.2 East Godavari district 17°28′35″N 81°47′49″E / 17.47639°N 81.79694°E / 17.47639; 81.79694 (Bhupathipalem PHES) Godavari 1 1 540 480 310 0.5 tmcft buffer storage provided. The distance between the two reservoirs is nearly 4.5 km.
Polavaram Left bank PHES1 43,000 172 East Godavari district 17°29′51″N 81°27′53″E / 17.49750°N 81.46472°E / 17.49750; 81.46472 (Polavavaram left bank PHES1) Godavari 5 18 600 450 470 The required 18 tmcft buffer storage is provided in other PHESs located in the Godavari river basin. The distance between the two reservoirs is nearly 3.1 km.
Polavaram Left bank PHES2 12,000 48 East Godavari district 17°29′15″N 81°31′37″E / 17.48750°N 81.52694°E / 17.48750; 81.52694 (Polavavaram left bank PHES2) Godavari 2 4.5 600 450 530 The required 4.5 tmcft buffer storage is provided in other PHESs located in the Godavari river basin. The distance between the two reservoirs is nearly 1.7 km.
Seshachalam PHES 6,200 24.8 Chittoor district 13°44′25″N 79°12′5″E / 13.74028°N 79.20139°E / 13.74028; 79.20139 (Rayalaseema PHES) Penna 6 2.1 610 600 525 The main purpose of this PHES is to transfer Krishna and Godavari waters @ 50,000 cusecs to high lands of Rayalaseema with only one lift from 80 m msl 13°57′47″N 79°32′5″E / 13.96306°N 79.53472°E / 13.96306; 79.53472 near Venkatagiri town in Nellore district to the upper reservoir at 610 m msl in Chittoor district to irrigate by gravity canal vast high lands in Rayalaseema region up to Bhairivani tippa reservoir on Vedavathi River in Ananthapur district.[69] This underground power station will also work as PHES. PHES powerhouse is to be connected to a 41 km long unlined pressure tunnel which will work as penstocks to the turbine units.[57][70]
Total 735,550 2,900 - - - 460 1225 - - -

Notes: Power potential (MW) is in generation mode, MDDL→ Minimum Draw Down Level or lowest bed level of the reservoir, FRL→ Full Reservoir Level, m msl→ meters above mean sea level. The total water storage includes nearly 432 tmcft of irrigation components. PHES water storage is 793 tmcft only. The PHES land requirement is nearly 1% of the land required (41,250 km2) for equivalent electricity generation by Solar PV power plants.[53] The power potential doubles in case of pumping operation for six hours in a day for the same water storage. Wherever, the length of penstock of each water turbine is found too long, the available head can be harnessed by constructing two PHES stations in cascade with an embankment canal to route water to the second PHES station.[69]

Solar

[edit]
Map of currently operating and proposed Solar power plants in the Indian state of Andhra Pradesh
Nambulapulakunta
Nambulapulakunta
Vinukonda
Vinukonda
Kovvur
Kovvur
Galiveedu
Galiveedu
Pinnapuram
Pinnapuram
Nagalapuram
Nagalapuram
Kalyandurg
Kalyandurg
Nallapadu
Nallapadu
Jaggayapeta
Jaggayapeta
Nagarimadugu
Nagarimadugu
class=notpageimage|
Map of currently operating and proposed Solar power plants in the Indian state of Andhra Pradesh. Green are currently Operating and blue are proposed.
See also: Solar power in India

The state is endowed with vast photovoltaic power potential on its marginally productive lands.[71] The state has total installed solar power capacity of 4,116.01 MW as of 30 June 2021.[36][72][73][74][75]

The state is planning to add 10,050 MW solar power capacity to provide power supply to farming sector during the day time.[76][77] Out of 10,050 MW, 6,400 MW capacity at 10 sites were offered for bidding. The winning tariffs are Rs 2.50 per unit which are at least 25% more than the earlier awarded tariffs of Rs 2 per unit in November 2020 even after reducing scope of work (no HV transmission line construction outside the solar park), state providing the land on lease, giving state guarantee for the timely payment for the power sold, allowing the state guarantee as security to get financial assistance at lower interest rates, disregarding higher solar power potential at these sites compared to Western and northern regions, etc.[78][79] The AP high court has stayed the award of contracts to the successful bidders on the grounds that these contracts are excluded from the jurisdiction of APERC in contravention of the electricity act, 2003.[80][81]

The state has offered five Ultra Mega Solar Power Projects with a total capacity of 12,200 MW to developers under renewable power export policy outside the state.[82][83][84][85][86]

Name Operator Location District Sector Installed Capacity (MW)
Kurnool Ultra Mega Solar Park[87] NTPC Pinnapuram Kurnool district  central 1,000
NP Kunta Ultra Mega Solar Power Project Many Nambulapulakunta (Kadiri) Anantapur district  central 978
Ananthapuramu - II Mega Solar Park[88] APGENCO Talaricheruvu Anantapur district  state 400
Galiveedu Solar Park[89] Marrikommadinne, Galiveedu mandal Kadapa district  central 400
Kadapa Ultra Mega Solar Park[90] ENGIE Ponnampalle, Mylavaram mandal Kadapa district  state 250
Amruth Solar Power Plant[91] Amrit Jal Ventures Kadiri Anantapur district  private 1
MEIL solar thermal[92] Megha Engineering & Infrastructures Limited Nagalapuram Anantapur district 50
Banaganapalle solar Welspun Vemulapadu, Banaganapalle mandal Kurnool district 70
Hindupur solar ACME Patraganipalle, Hindupur mandal Anantapur district 50
Yadiki solar Azure Power Vemulapadu, Yadiki mandal Anantapur district 50
Kuppam solar ACME Morsanapalli, Kuppam mandal Chittoor district Private 40
Parigi solar First Solar Beechiganipalle, Parigi mandal Anantapur district 40
Mudasarlova Reservoir Solar Park APGENCO Visakhapatnam Visakhapatnam district  state 2
Simhadri floating solar NTPC Visakhapatnam Visakhapatnam district  central 25

Wind power

[edit]
Map of currently operating and proposed Wind power plants in the Indian state of Andhra Pradesh
Kolimigundla
Kolimigundla
Atmakur
Atmakur
Puthlur
Puthlur
Ramagiri
Ramagiri
Nallakonda
Nallakonda
Gandikota
Gandikota
Tirumala
Tirumala
Srisailam
Srisailam
Araku
Araku
class=notpageimage|
Map of currently operating and proposed Wind power plants[93] in the Indian state of Andhra Pradesh
See also: Wind power in India

The state has total installed wind power capacity of 4,083.57 MW as on 30 June 2021.[36][72][73][94][95]

Name Operator Location District Sector Unit wise Capacity (MW) Installed Capacity (MW)
Ramagiri Wind Mills[96] APGENCO Ramagiri Anantapur State 10x0.2 2.00
Narmada Wind farm[97] CLP Wind Farms (India) Private Ltd. Nallakonda Anantapur Private 1 x 50.4 50.04
Puthlur RCI Wind farm[98] Wescare (India) Ltd. Puthlur Anantapur Private 1 x 20 20.00

Other utility power plants

[edit]

In addition to above projects, there are nearly 103 MW small Hydro plants, nearly 490 MW bagasse, industrial & municipal waste, bio-mass co-generation, & bio-mass based power projects, nearly 78.79 mini power plants (grid connected) and nearly 67.20 MW other (grid connected) plants based on isolated gas wells, etc. in private sector.[36][35] These power plants are not covering captive power capacity in various industries that are not grid connected. In addition, there are innumerable diesel generator sets installed in the state for stand by supply and emergency power supply needs during power outages.

Transmission system

[edit]
Per capita power generation[99]
Year Kwh/head
2014–15
1,040
2015–16
1,230
2016–17
1,319
2017–18
1,388
2018–19
1,480
2019–20
1,507
2020–21
1,434
2021–22
1,567
See also: Electricity sector in India § Electricity transmission and distribution

The state has well spread transmission system. APTransCo / DisComs owned and operated transmission lines from 400 kV to 11 kV is 231,127 circuit kilometers excluding the HT lines owned and operated by PGCIL in the state.[100][101] For importing and exporting power, the state grid is well interconnected with adjoining western and eastern regional grids in addition to adjoining state grids.[102] The spread of high voltage transmission lines (≥ 11 kV) is such that it can form a square matrix of area 1.93 km2 (i.e. on average, at least one HT line within 0.7 km vicinity) in 160,205 km2 total area of the state. DisComs owned and operated LT lines (below 11 kV) are 292,158 circuit kilometers. It represents that there is at least one HT or LT line availability on average within the vicinity of 306 meters in the entire state area. The state has 3183 nos substations (≥ 33 kV) which represents one substation in every 50.33 km2 area on average (i.e. one substation with in 3.6 km distance on average).[20] However the maximum peak load met is 9,453 MW as of 14 October 2018.[72] Huge installed capacity of the transmission network and the substations are being underutilized with low demand factor.

Regional operations

[edit]
See also: Transmission Corporation of Andhra Pradesh

Power distribution in the state is divided into three divisions, namely Eastern Power Distribution Corporation Limited (APEPDCL), Central Power Distribution Corporation Limited (APCPDCL[103]) and Southern Power Distribution Corporation Limited (APSPDCL), which distributes the power to the households, agriculture and the industries.[104]

APEPDCL

[edit]
Eastern Power Distribution Company of Andhra Pradesh Limited
Company typeState Government-owned Corporation
IndustryElectricity Distribution
FoundedMarch 31, 2000
HeadquartersVisakhapatnam, Andhra Pradesh, India
Key people
Prudhvi Tej Immadi[105][106]
(Chairman & MD)
ProductsElectricity
OwnerGovernment of Andhra Pradesh
Websitewww.apeasternpower.com

Andhra Pradesh Eastern Power Distribution Company Limited or APEPDCL is a state-owned Electricity Distribution company. It is owned by the Government of Andhra Pradesh.[107][108][109]

The present CMD is Immadi Prudhvi Tej, IAS.[110][111][112]

APEPDCL was incorporated under the Companies Act as a Public Limited Company on 31 March, 2000 with headquarters at Visakhapatnam.[113][114] APEPDCL encompasses in 11 districts in the state of Andhra Pradesh. The districts are Srikakulam, Alluri Sitharama Raju, Vizianagaram, Parvathipuram Manyam, Visakhapatnam, Anakapalli, Kakinada, East Godavari, Konaseema, Eluru and West Godavari.[115][116][117]

APCPDCL

[edit]
Andhra Pradesh Central Power Distribution Corporation Limited
Company typeState Government-owned Corporation
IndustryElectricity Distribution
FoundedDecember 05, 2019
HeadquartersVijayawada, Andhra Pradesh, India
ProductsElectricity
Websiteapcpdcl.in

Andhra Pradesh Central Power Distribution Corporation Limited (also known as APCPDCL), (HQ: Vijayawada), is a power distribution company owned by the state government of Andhra Pradesh. It was formed on 05-12-2019, as part of a demerger in 2019,[118] to cater the electricity needs of seven districts in Andhra Pradesh state.[119][120][121][122][123][124]

The present CMD is Ravi Pattanshetti, IAS.[125][126] It serves Guntur, Bapatla, Palnadu, Krishna, NTR, Prakasam districts, an area of 56868 square kilometres, in Andhra Pradesh state. The corporation has 1176 MVA of electric distribution capacity with 9659 employees serving in the corporation.[118][127][128]

See also

[edit]

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[edit]
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