Open Access in Gujarat

Venu Birappa

Gujarat Energy Transmission Corporation Limited 27th May 2013

Flow of Presentation

• GETCO at a glance

• Open Access in Gujarat

• Short Term, Medium term and Long term Open Access

• Merchant plant, Captive generation, Third party sale

• Technical requirement

• Redundancy, Reactive power, Future load growth

• Open Access to Wind and solar power

• Impact of Open Access

• Major Impediments

No Network as such in planned for

Short term/ Medium term Open Access.

3

Current status

Installed Capacity including Central Sector Share (as on 30.04.2013):

Sr. No.

Sector Installed

Capacity in MW

1 State Sector 4996

2 Private Sector 7400

3 Central Sector 5571

Total 17967*

* Excluding renewable capacity – 4003 MW

Sr. No. Particulars Substations

(Nos.) Transmission Lines

(CKM) Transformation Capacity (MVA)

1 400 KV 11 3602 8355

2 220 KV 83 15774 20770

3 132 KV 50 4938 6323

4 66 KV 1206 23658 26230

Total 1350 47972 61678

Transmission Network Development (as on 31.03.2013)

Installed Capacity in MW

41%

28%31%State Sector

Private Sector

Central Sector

Open Access in Gujarat

GERC notified Open Access Regulation in 2005

State of Gujarat has implemented intra-state ABT w.e.f. 05.04.2010 which is pre-requisite for implementation of open access

Subsequently, GERC Open Access Regulation 2011 notified as per model Regulation of Forum of Regulators

State providing adequate infrastructure support to open access consumers in the state

4

Open Access Rules : GERC

Long-term customer: Full Transmission charges shall be determined as per the Terms & Conditions of

tariff notified by appropriate Commission from time to time. Rs.2970/MW/day for the year 2013-14 Period --exceeding12 year but not exceeding 25 years Exit option for customer available by paying compensation

Medium Term Customer

Full Transmission Charges Allowed on available margins Rs.2970/MW/day for the year 2013-14 Period– exceeding 3months but not exceeding 3 years Exit option available by paying compensation. Priority over Short Term Open Access

Short Term Customer Intra-state

ST-Rate = 0.25 x [TSC / AV-cap]/365 Rs.742.5 /MW/day for the year 2013-14

Period ----less than 3 months and not exceeding 6 months in a year

Transmission Charges:

Connectivity and Open Access relationship

• Connectivity should always be simultaneously applied with either Medium

Term Open Access or Long Term Open Access

– Open Access users may take undue advantage of taking connectivity and

then trading in short term

– Many Generators demand connectivity as merchant plants and then trade

power under short term open access as per the availability in market.

– Captive power plants also seek connectivity and trade the surplus power.

– Captive user and Merchant power plants find consumers within Gujarat for

trading power as third party sale

– Eventually disparity among Open Access users, mainly DISCOMs who pay

for the existing network

– Consumers grievance due to such disparity

– Power not availed by such open access consumers within contract

demand is being backed down/sold at lower price in market for which fixed

cost is payable by DISCOMs

Open Access granted in Gujarat

Sr. No

Year

Short Term Open Access Medium

Term Open Access

Long Term Open Access

Numbers of STOA

Application approved

Total STOA User

Capacity Approved

Sale (MW)*

Capacity Approved Purchase (MW)*

Nos. MW Nos. MW

1 2009-10 603 25 2404 -- - - 16 9547

2 2010-11 541 27 2738 -- - - 16 12745

3 2011-12 1070 49 3189 1355 6 279 15 13482

4 2012-13 4635 232 3255 3271 10 354 18 18033

*Average MW capacity approved during each month (approximately)

Captive Capacity catered by grid--------2957 MW

Details of Open Access Consumers in Gujarat

Details DGVCL UGVCL PGVCL MGVCL TPL AEC TOTAL

No. of OA Consumers (as on Mar-12) 12 11 19 7 -- 49

Power purchased under OA in Mus (FY 2011-12) 946 154 280 111 --- 1491

No. of OA Consumers (as on Mar-13) 68 50 68 32 14 232

Power purchased under OA in Mus (FY 2012-13-upto 31.3.13) 2948 456 661 350 12 4427

Presently, 232 OA consumers have been purchasing power under short term open access from Power Exchanges/ Short term Market in the State

State’s tied up capacity to supply their consumers on long term basis to meet the existing as well as future demand is remaining unutilized/ stranded

Cost of power purchased from DISCOM

W/o demand charge

Charges Rs/unit

Demand Charges -

Energy charges 4.30

Fuel Surcharge 1.18

Time of Usage charges (75 paisa/ unit) 0.25

Total 5.73

15% Electricity duty is applicable but same is also applicable for

purchase under open access

Power purchase by Open access user in range of Rs. 3.75-5.43/unit

as against the supply of power by DISCOM at the rate of Rs. 5.73/unit

Technical Requirement

Reactive Power compensation

Sr. No.

Voltage Class Shunt Capacitor

(in MVAR)

Reactor (in MVAR)

Bus Line

1 400KV 0 705 313

2 220KV 0 100 0

3 132KV 216 0 0

4 66/33KV 1328 0 0

5 22KV 73 0 0

6 11KV 3121 0 0

Total 4738 805 313

• 180 MVAR Shunt Capacitor will be installed upto March-2014

• 1885 MVAR of 400KV class Bus Reactors (7X125 + 12X80 + 1X50) will be installed

• 628MVAR of 400KV class Line Reactors (3X50 + 6X63) will be installed.

(Up to March-2013)

10

Redundancy of Transmission Network

Technical Requirement

• Unable to handle contingency during peak load condition

• Critical line loading during peak load condition

• Single source substations

• Non availability of parallel corridors.

Transfer of Power

(Existing)

Expected load growth Transfer of Power

(2012-13)

PGVCL

8770 MW (G)

4152 MW (D)

UGVCL

870 MW (G)

2918 MW (D)

MGVCL

2240 MW (G)

1423 MW (D)

DGVCL

6485 MW (G)

2146 MW (D)

DISCOM

(G)-Generation

(D)-Demand

TPAEC

500 MW (G)

1315 MW (D)

TPSEC

1148 MW (G)

600 MW (D) 12

Open Access to Renewable Energy

• Variability: generation changes according to the availability of wind velocity/sunlight – resulting in swings of the plant output

• Uncertainty : magnitude and time of the generation output is unpredictable & unreliable and need ramping requirements

• Low Plant Load Factor (PLF) to the tune of 20-22%

• Limited control on generation

• Not having proximity to the load centre.

• The over voltage problem may be observed during period of low wind / solar generation and off-peak load condition due to integration of large scale renewable energy projects.

• Due to the large oscillations in the wind / solar generation, the electrical grid is affected in its voltage control and transient stability.

• Adequate reserve capacity of gas / hydro generation is essential to meet the system demand, when there is a sudden and substantial drop in wind / solar generation.

Investment for integration of Wind power

14

400 KV

Halvad

400 KV

Varsana

220 KV

Nakhatrana

220 KV

Radhanpur

400 KV

Chorania

220 KV

Tankara

220 KV

Bhatia

220 KV

Kangasiyali

220 KV

Jasddan

Proposed 400/220 KV S/S

Proposed 220/132 KV OR

220/66 KV S/S

Proposed 400 KV D/C line

Proposed 220 KV D/C line

Proposed 132 KV D/C line

Geographical locations for Wind Power Projects

Euro Solar, Bhachau–5MW Back Bone Enterprise – 5 MW Konark Gujarat – 5 MW ICML – 9 MW Zeba Solar – 10 MW India Solar Ray – 10MW Ambit Advisory – 5MW Taxus infrastructure-5MW

Lanco, Bhadrada-5MW Lanco, Chandiyala – 15 MW PLG Power, Sami-20MW Astonfield Solar – 11.5 MW PLG Photovoltaic-20MW

JaiHindi – 5 MW

Solitaire, Mitha-15.20 MW Precious, Akhaj-15 MW

Solar Semi Conductor–20 MW Cargo Motors, Rapar – 25 MW S J Green Park Energy – 5MW

15

Sunkon Energy -5 MW Mono Steel – 10MW

Responsive – 25 MW Ujjwala -25 MW Chhatel (Ispat) -25 MW

Welspun Ltd – 15 MW Unity 5 MW

Azure Power, Dhama –5 MW ESP Urja Ltd – 5 MW Millenium Synergy, Dasada – 10 MW Loroux Bio Energy – 25 MW EMCO – 5 MW WAA Solar – 10 MW Visual Percept – 25MW Environmental – 10 MW

Tata Power Limited -25 MW

CBC solar -10 MW Ganges Green – 15 MW Ganeshwani – 5 MW Green Infra -10 MW Aravli Infra 5 MW GHI Energy - 10 MW MoserBear – 15MW APCA Power – 5MW Hiraco Renewable – 20MW

Kemrock – 10 MW

Adani Ltd – 40MW GMDC -5 MW

ACME– 15 MW

Azure Haryana – 10.20 MW

Aatash Power – 5MW

Dreisatz MySolar-15MW

MySolar24 – 15MW

Tathith Energies- 5 MW

Sun Borne – 15MW

Sand land-25MW

GIPCL – 5 MW

JSW Energy, Deodar-5MW Solar Semiconductor, Ajwada-20MW Solitaire (MoserBear), Mudetha-15MW Torrent Power, Savpura-25MW NTPC, Morwada-50MW Welspun Urja-40MW

Green colour – Projects commissioned

Red colour - Projects to be commissioned

Charanka Solar Park

Projects Commissioned – 221 MW

Project of Solar Generating Plants in Gujarat

Total Installed Capacity: 857MW 15

Impact of Open Access

Per unit fixed cost works out to Rs. 2.07 & DISCOMs recovers

approx. Rs. 0.50/unit as fixed charge from HT consumers

Retail energy charges includes partial recovery towards fixed charges

Open access consumers pays around 55 paisa/unit (39 paisa- cross subsidy & 16 paisa – wheeling & transmission

Power not availed by such open access consumers is being backed down/sold at lower price in market for which fixed cost is payable by DISCOMs

Reasons for Thrust in Open Access

• Open access is crucial for

– Mobilizing larger private investment in generation through

guaranteed access to credible buyers.

– Enhancing competition amongst generators and suppliers to

have option for consumers.

• Investment promotion objective is of higher priority in view of the

prevailing electricity shortages.

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Major impediment

– Open Access users may take undue advantage of taking connectivity and

then trading in short term….Regulations of connectivity need to be

revisited

– Eventually disparity among Open Access users, mainly DISCOMs who pay

for the existing network

– Power not availed by such open access consumers within contract

demand is being backed down/sold at lower price in market for which fixed

cost is payable by DISCOMs

– Renewable Open Access due to its unpredictable nature is creating

constraint for normal Open Access consumers during peak harvesting

period

Thank you !!!