“Critical Appraisal Of The Progress On
Evacuation Bottlenecks”
By
Engr. O.O. Akinniranye
Chief Executive Officer (TCN)
1
Enugu Power Summit: 11th -12th May, 2012
a:
In road to
Bottleneck
Overview
b:
Causes of
Bottlenecks
c:
Mitigation
Plans
What is
bottleneck
Funding
Strategies to
Eliminate
bottlenecks
Types of
Bottleneck
Way leave
Short Term
Effects of
bottlenecks
Vandalizm
Medium
Term
Key
bottleneck
locations
Human
Capacity
Ageing
Equipment
d:
Elimination of
Bottlenecks
Grid Plans
Long
Term/Supergrid
2
In road to Bottlenecks
3
What is Bottleneck
“Traffic Constriction: a junction or a narrow
section of a road that slows traffic or causes
traffic jam” Encarta Dictionary
In Power Transmission
A node or connection between nodes that is
a constraint in moving power from one point
to another in an electrical system
4
Types of Bottlenecks
Generation -Transmission interface
constraints
Transmission Substation capacity
constraints
Transmission wheeling constraints
Transmission - Distribution interface
constraints
5
Effects of Bottlenecks
Load Shedding
Voltage/Frequency instability
Stranded power
System Collapse
6
Key Bottleneck locations
Afam
Onitsha
Gombe
Kano
Alaoji
Ihovbor
Olorunsogo
Aja
Ikorodu
#
Power Plant
Current
Constrained Power
(MW)
1
Afam VI (Shell)
120MW
2
Okpai (Agip)
100MW
3
Rivers State Government
(Afam I & II)
120MW
Total
Project
Owner
340MW
Remarks
2nd Onitsha-Benin 330 kV Single
Circuit (SC) Line
TCN
Limiting power supply from
Okpai
3rd Onitsha-Benin 330kV DC Line
TCN
Limiting power supply from
Okpai
Alaoji-Onitsha 330 kV SC Line (NIPP
Lot 6)
NDPHC
Limiting power supply from
Alaoji and Gbarain NIPPs
Alaoji – Ikot Ekpene – Calabar
330KV DC Line (Lot 25)
NDPHC
Limiting power supply from
Alaoji and Afam power stations
Ikot Ekpene – Ugwuaji – New
Haven 330KV Line (Lot 3)
NDPHC
Limiting power supply from
Alaoji through the alternative
7
loop
Causes of Bottlenecks
8
Funding
Funding
150
• Lack of adequate funding
100
• Inconsistency of funding
• End of year clearing of unspent 50
0
funds
• Funding from only FG
•
•
•
•
•
•
REQUESTE
D (Nb)
APPROVED
(Nb)
2009201020112012
RELEASED
(Nb)
2012 Budget in Perspective
Budget initially requested was N145b
Budget envelop for TCN was N45.621b
Budget later reduced to N41.325b
Budget finally sent to Nat. Assembly N35.119b
Budget finally approved by NAT Assembly N25.8b
Budget eventually released???????????????????
56.5% of budgeted amount was eventually approved
9
Radial Grid Structure
REPUBLIC
OF
CHAD
Niamey
NIGER
SOKOTO
Sokoto
Katsina
132 kV
JIGAWA
Birnin
Kebbi
YOBE
Hadejia
BORNO
Gusau
KATSINA
Damaturu
ZAMFARA
Potiskum
Kano
KEBBI
Maiduguri
KANO
REPUBLIC
OF BENIN
KADUNA
BAUCHI
Bauchi
Kaduna
KAINJI
Jos
Gombe
ADAMAWA
GOMBE
2
2
KWARA
2
SHIRORO
NIGER
2
Minna
JEBBA/GS
Yola
Abuja
JEBBA/TS
IIorin
PLATEAU
Jalingo
ABUJA
OYO
Lafia
NASSARAWA
3
NIGERIA
REPUBLIC
OF CAMEROON
TARABA
Lokoja
Osogbo
Makurdi
Ado
Ekiti
Ibadan
OGUN Olorunsogo
AJAOKUTA
EKITI
OSUN
MAKURDI
Bali
BENUE
KOGI
Abeokuta
Akure
ALAGBADO
TO SAKETE
EGBIN
P/ST.
Ikeja
Mambila
Aliade
2
ONDO
TRANSMISSION LINE LEGEND
ENUGU
EDO
2
Benin
LAGOS
Asaba
EBONYI
Enugu
Akwa
Abakaliki
ONITSHA
4
AN AMBRA
SAPELE
P/ST.
IMO
DELTA
POWER ST.
DELTA
CROSS
RIVER
Umuahia
2
330KV LINES (EXISTING) – MULTIPLE CIRCUITS
2
330KV LINES (FGN) – MULTIPLE CIRCUITS
2
330KV LINES (NIPP) – MULTIPLE CIRCUITS
2
330KV LINES (PROPOSED PROJECT)
– MULTIPLE CIRCUITS
330KV LINES - EXISTING
ABIA
330KV LINES - FGN
Owerri
330KV LINES - NIPP
RIVERS
Port
Harcourt
Uyo
2
BAYELSA
330KV LINES - PROPOSED PROJECT
Calabar
AKWA
IBOM
330 KV
BULK SUPPLY POINT
H
HYDROELECTRIC POWER STATION
AFAM
POWER ST.
ATLANTIC OCEAN
THERMAL POWER STATIONS
10
Way
leave
Funding
• Increasingly expensive to
pay compensation
• Lack of a national policy
on right of way acquisition
11
Vandalizm
Funding
Vandalization of transmission
lines has caused TCN to lose
evacuation corridors and
delay in the implementation
of several evacuation projects
e.g Abuja – Shiroro 330KV
line was vandalized 14 times
before it was energised in
2004
12
Human
Capacity
Funding
No. of Staff
2000
1500
1000
No. of Staff
500
46% of the work force are
between 41- 50Yrs while 30%
are between 50 – 60yrs.
Almost 80% of the work
force in TCN are over 40years
old
0
18- 30 31- 40 41-50 50-60
No. of staff to retire
Age Bracket in Years
An average growth of
retirement of staff at 8%
per annum
180
160
140
120
100
80
60
40
20
0
No. of staff to retire
2012 2013 2014 2015 2016
Years
13
AGEING TRANSMISSION
INFRASTRUCTURE
TCN MAJOR EQUIPMENT AGE DISTRIBUTION
160
140
120
Qty (Nos)
100
80
60
40
20
0
330kV Trfmrs
132kV Trfmrs
330kV CBs
132kV CBs
330kV TRX Lines
132kV TRX Lines
REACTORS
0-10YR
5
48
39
81
5
5
1
11-20YR
1
48
35
49
0
26
1
21-25YR
3
26
59
118
16
19
1
26-30YR
24
64
107
150
16
27
9
31-40YR
5
45
0
47
29
44
6
41-50YR
0
11
1
10
4
14
0
50-ABOVE
0
2
0
6
0
0
0
14
MITIGATION PLANS
15
Strategies to Eliminate Bottlenecks
Provide more wheeling corridors for
generated power
Increase the Transmission to Generation
Capacity Gap at 330KV Level
Increase The Transmission To Distribution
Capacity gap at 132KV level
Complete the Transmission ring structure
to meet n-1 contingency criteria
Implementing a 765KV super grid
16
Short Term Strategies.........Dec, 2012
Completion of 2nd and 3rd Benin Onitsha
330KV Lines
Completion of Alaoji - IkotEkpene – Ugwuaji
– New Haven 330KV Lines
Completion of all on-going 2001 awarded
south- eastern projects
Complete the installation of 150MVA
Transformer at Afam
Installation 20No 132/33KV Power
Transformers
17
Key Site – to – Site Evacuation Mitigation
Plans by Dec’ 2012
Locations
Mitigation Plans
STRANDED POWER AT
OKPAI POWER STATION
3rd Benin – Onitsha line
ready by June’12
STRANDED POWER AT
AFAM POWER STATION
150MVA Transformer at
Afam ready by Aug’12
STRANDED POWER AT
ALAOJI POWER STATION
300MVA 132/33KV TCN
Substations to be ready by Dec, 12
and Completion of 1st phas of Lot
25 and 3 of NIPP Projects
STRANDED POWER AT
IHOVBOR POWER STATION
Ihovbor Line to Benin – Osogbo
330KCV Line to be ready before
18
Dec’12
MITIGATION PLANS FOR EASTERN
NETWORK POWER EVACUATION
#
Description
1 Alaoji – Ikot Ekpene –
Calabar 330KV DC Line
2 Ikot Ekpene – Ugwuaji –
New Haven 330KV DC Line
(New Haven – Onitsha
330KV single circuit line is
existing)
3 3rd Benin – Onitsha 330KV
DC Line
Timeline
Remarks
Dec,12 A single circuit
would be ready
by Dec, 2012
Dec,12 Two out of the
four circuits
would be ready
by Dec, 2012
June, 12 N450m
Outstanding
compensation19
20
Status of Trx. Evacuation Projects To be
Completed By Dec 2012
#
Projects
%
Completion
Compl.
Date
Constraints
1 2nd Benin – Onitsha 330KV DC
Line
71
Dec, 2012
N1.2Billion
Compensation
2 3rd Benin –Onitsha 330KV DC
Line
90
June,2012
N450m
Compensation
3 Umuahia - Mbalano 132KV SC
Line
67
Oct, 2012
Re-procured
4 Ohafia - Arochukwu 132KV SC
Line
62
Oct, 2012
Re-procured
5 Umuahia – Ohafia 132KV Line
50
Oct, 2012
Re-procured
6 Mbalano 132KV Substation
65
Dec, 2012
Require additional
Funding
7 Okigwe 132KV Substation
65
Dec, 2012
Require additional
funding
21
8 Ohafia 132KV Substation
65
Dec, 2012
Require additional
Status of Trx. Transformer Procurement to
be completed By Dec 2012
#
Projects
1 4No. 300MVA
330KV Tranf.
2 4No. 150MVA
330KV Transf
3 10No. 100MVA
132KV Transf
4 10No. 60MVA
132KV Transf
Capacity
Delivery Status
Expectation Time
1020MW Oct, 2012 LC Fully
Funded
510MW
Feb, 2013 LC Fully
Funded
850MW
June,
Already
2012
Shipped
510MW
Jan, 2012 Already at
Site
22
Capacity to be added to the grid By Dec 2012
Projects
Damaturu
Maiduguri
Alaoji -Umuahia
Umuahia Substation
Arochukwu Substation
3rd Benin Onitsha
2nd Benin Onitsha
Calabar
Jos - Kafachan
Makeri -Pankshin
Makeri and Pankshin Substation
Katsina, Hadejia and Kontagora
Tamburawa, Walalambe, Yauri
Dangorawa
Mbalano - Okigwe
Ibom Power
Okigwe, Mbalano and Ohafia Substations
Umuahia- Ohafia 132KV Line
Umuahia - Mbalano 132KV Line
Nnewi, Oba, Ideato , Aboh Mbaise Substations
Kafanchan
Yelwa - Yauri
Ogoja
150 MVA Trx Reinforcement Projects
Substations (MVA)
330KV (MVA) 132KV (MVA)
150
150
50
80
80
262
131
300
80
122
180
180
240
30
20
2.5
240
49.5
30
480
120
100
80
300
100MVA Trf Reinforcement Projects
1000
60MVA Trf Reinforcement Projects
600
TOTAL
Lines (KM)
330KV (KM)
132KV (KM)
900
3310
23
393
454
Nigerian 330KV Network Grid by Dec, 2012
REPUBLIC
OF
CHAD
Niamey
NIGER
SOKOTO
Sokoto
Katsina
132 kV
JIGAWA
Birnin
Kebbi
YOBE
Hadejia
BORNO
Gusau
KATSINA
Damaturu
2
ZAMFARA
Potiskum
Kano
KEBBI
Maiduguri
KANO
2
2
REPUBLIC
OF BENIN
2
KADUNA
BAUCHI
Bauchi
Kaduna
KAINJI
Jos
2
Gombe
ADAMAWA
GOMBE
2
2
KWARA
2
SHIRORO
NIGER
2
2
Minna
JEBBA/GS
Yola
Abuja
JEBBA/TS
IIorin
PLATEAU
Jalingo
ABUJA
2
2
OYO
2
Lafia
NASSARAWA
3
NIGERIA
TARABA
Makurdi
Ado
Ekiti
OGUN Olorunsogo
OSUN
2
EKITI
2
AJAOKUTA
MAKURDI
Bali
BENUE
KOGI
Abeokuta
Akure
2
ALAGBADO
TO SAKETE
EGBIN
P/ST.
Ikeja
ONDO
2
2
2
Lokoja
Osogbo
Ibadan
REPUBLIC
OF CAMEROON
Mambila
Aliade
2
2
ENUGU
EDO
2
1
Benin 1
LAGOS
4
Asaba
1
SAPELE
P/ST.
Abakaliki
ONITSHA
4
AN AMBRA
IMO
DELTA
POWER ST.
DELTA
2
EBONYI
Enugu
Akwa
TRANSMISSION LINE LEGEND
2
330KV LINES (EXISTING) – MULTIPLE CIRCUITS
2
330KV LINES (FGN) – MULTIPLE CIRCUITS
2
330KV LINES (NIPP) – MULTIPLE CIRCUITS
2
330KV LINES (PROPOSED PROJECT)
– MULTIPLE CIRCUITS
CROSS
RIVER
Umuahia
330KV LINES - EXISTING
330KV LINES - FGN
ABIA
330KV LINES - NIPP
Owerri
RIVERS
Port
Harcourt
2
2
Uyo
2
BAYELSA
2
330KV LINES - PROPOSED PROJECT
Calabar
AKWA
IBOM
330 KV
BULK SUPPLY POINT
H
HYDROELECTRIC POWER STATION
AFAM
POWER ST.
ATLANTIC OCEAN
THERMAL POWER STATIONS
24
Medium Term Strategies.........Dec, 2013
Completion of 2nd Alaoji – Onitsha loop 330KV
Lines (NIPP Lot 6)
Completion of grid closing loop (Ugwuaji – Jos
330KV Line
Complete the reinforcement of substations
with 300MVA, 150MVA,100MVA Transformers
Complete the construction of some
Transmission lines and substations
Complete the re-conductoring of some
Transmission lines
25
Capacity to be added to the grid By Dec 2013
#
Projects
1 Katampe - National Stadium
2 Onitsha - Nnewi - Ihiala
3 Nsukka - Ayangba
4 Ayangba
5 Ogbomosho
6 Daura Substation
7 Katsina - Daura Line
8 Obudu - Ogoja
9 Lokoja - Obajana
10 Kukwaba Substation
11 Wudil
12 Kaduna - Jos
13 Lanlate
14 Igangan
15 New Ayobo
16 Odogunyan
17 4 x 300MVA Trf Reinforcement Projects
18 2 x 150MVA Trf Reinforcement Projects
TOTAL
Substations (MVA)
330KV
132KV
Lines (KM)
330KV
132KV
18
43
80
120
120
80
80
45
25
120
30
200
120
120
120
120
1200
300
1500
950
225
266
26
Nigerian 330KV Power Grid by Dec, 2013
REPUBLIC
OF
CHAD
Niamey
NIGER
SOKOTO
Sokoto
Katsina
132 kV
JIGAWA
Birnin
Kebbi
YOBE
Hadejia
BORNO
Gusau
KATSINA
Damaturu
2
ZAMFARA
Potiskum
Kano
KEBBI
Maiduguri
KANO
2
2
REPUBLIC
OF BENIN
2
KADUNA
BAUCHI
Bauchi
Kaduna
KAINJI
Jos
2
Gombe
ADAMAWA
GOMBE
2
2
KWARA
2
SHIRORO
NIGER
2
2
Minna
JEBBA/GS
Yola
Abuja
JEBBA/TS
IIorin
PLATEAU
2
ABUJA
2
OYO
Jalingo
2
Lafia
NASSARAWA
3
2
NIGERIA
TARABA
Makurdi
Ado
Ekiti
OGUN Olorunsogo
OSUN
2
AJAOKUTA
EKITI
2
MAKURDI
Akure
2
ALAGBADO
TO SAKETE
EGBIN
P/ST.
Ikeja
ONDO
2
2
Mambila
Aliade
2
2
Bali
BENUE
2
KOGI
Abeokuta
2
Lokoja
Osogbo
Ibadan
REPUBLIC
OF CAMEROON
2
ENUGU
EDO
2
1
Benin 1
LAGOS
4
Abakaliki
ONITSHA
1
4
AN AMBRA
SAPELE
P/ST.
IMO
2
2
330KV LINES (EXISTING) – MULTIPLE CIRCUITS
2
330KV LINES (FGN) – MULTIPLE CIRCUITS
2
330KV LINES (NIPP) – MULTIPLE CIRCUITS
2
330KV LINES (PROPOSED PROJECT)
– MULTIPLE CIRCUITS
CROSS
RIVER
Umuahia
330KV LINES - EXISTING
330KV LINES - FGN
ABIA
2
DELTA
POWER ST.
DELTA
EBONYI
Enugu
Akwa
Asaba
TRANSMISSION LINE LEGEND
2
330KV LINES - NIPP
Owerri
RIVERS
Port
Harcourt
2
2
2
BAYELSA
2
2
2 Uyo
330KV LINES - PROPOSED PROJECT
Calabar
AKWA
IBOM
330 KV
BULK SUPPLY POINT
H
HYDROELECTRIC POWER STATION
AFAM
POWER ST.
ATLANTIC OCEAN
THERMAL POWER STATIONS
27
Long Term Strategy
Commence and complete the Supergrid.
Origin of the Nigeria Supergrid
• Evacuation of 2600MW from Mambilla
Definition of the supergrid
• Moving bulk power to major hubs over
long distances at minimal losses
Implementation of the supergrid in phases.
28
Nigerian Power Grid: Proposed 765KV Lines Network
REPUBLIC
OF
CHAD
Niamey
NIGER
SOKOTO
Sokoto
Katsina
132 kV
JIGAWA
Birnin
Kebbi
YOBE
Hadejia
BORNO
Gusau
KATSINA
Damaturu
ZAMFARA
Potiskum
Kano
KEBBI
Maiduguri
KANO
REPUBLIC
OF BENIN
2
KADUNA
BAUCHI
Bauchi
Kaduna
KAINJI
Jos
2
Gombe
ADAMAWA
GOMBE
2
2
KWARA
2
SHIRORO
NIGER
2
Minna
JEBBA/GS
Yola
Abuja
JEBBA/TS
IIorin
PLATEAU
Jalingo
ABUJA
OYO
Lafia
NASSARAWA
3
NIGERIA
REPUBLIC
OF CAMEROON
TARABA
Lokoja
Osogbo
Makurdi
Ado
Ekiti
Ibadan
OGUN Olorunsogo
OSUN
AJAOKUTA
EKITI
2
MAKURDI
Bali
BENUE
KOGI
Abeokuta
Akure
ALAGBADO
TO SAKETE
ONDO
2
Ikeja
2
Mambila
Aliade
2
2
ENUGU
EDO
2
1
Benin 1
LAGOS
Asaba
EBONYI
Enugu
Akwa
Abakaliki
ONITSHA
AN AMBRA
SAPELE
P/ST.
IMO
DELTA
POWER ST.
DELTA
2
TRANSMISSION LINE LEGEND
2
330KV LINES (EXISTING) – MULTIPLE CIRCUITS
2
330KV LINES (FGN) – MULTIPLE CIRCUITS
2
330KV LINES (NIPP) – MULTIPLE CIRCUITS
2
330KV LINES (PROPOSED PROJECT)
– MULTIPLE CIRCUITS
CROSS
RIVER
Umuahia
330KV LINES - EXISTING
330KV LINES - FGN
ABIA
330KV LINES - NIPP
Owerri
765KV Super-Grid line
RIVERS
Port
Harcourt
Uyo
2
BAYELSA
330KV LINES - PROPOSED PROJECT
Calabar
AKWA
IBOM
330 KV
BULK SUPPLY POINT
H
HYDROELECTRIC POWER STATION
AFAM
POWER ST.
ATLANTIC OCEAN
THERMAL POWER STATIONS
29
Implementation of Supergrid..Phase 1
PHASE 1
•
•
PHASE 1
PhasePhase
1: This
involves construction of 765kV DC Transmission linesfrom Afam
from– Alaoji
Afam– –
1: This involves construction of 765kV DC Transmission lines
AlaojiJos– -Jos
- Kaduna.
thesubstations:
following substations:
Kaduna.
With theWith
following
•
•
•
•
•
•
•
•
•
•
8 x 333MVA
765/330kV (2000MW)
transformers
2.1.12.1.1 8 x 333MVA
765/330kV
(2000MW) transformers
atat
Kaduna
and
associated
inductive
and
reactive
power
Kaduna and associated inductive and reactive power
compensating
equipment.
compensating
equipment.
2.1.2
4 x 333MVA 765/330kV (1000MW)
transformers at
2.1.2
4 x 333MVA
765/330kV
(1000MW)
transformers
at
Jos and associated inductive and reactive power
compensating
equipment.
Jos and
associated inductive
and reactive power
2.1.3
8 x 333MVA
330/765kV (2000MW) step up transformers at
compensating
equipment.
Afam and associated inductive and reactive power
2.1.3compensating
8 x 333MVA
330/765kV (2000MW) step up transformers at
equipment.
Afam2.1.3
and associated
inductive
and
reactive
power
4 x 333MVA
330/765kV
(1000MW)
step
up transformers at
compensating
equipment.
Alaoji and inductive
and reactive power compensating
2.1.3equipment.
4 x 333MVA 330/765kV (1000MW) step up transformers at
IMPACTS
Alaoji and inductive and reactive power compensating
Immediate evacuation of 3000MW generation will be achieved; at
existing
equipment.
/ on-going 330kV transmission corridors to Jos (3 Circuits),
Kano (3 circuits) and Shiroro –
Abuja
(2 circuits).
IMPACTS
Immediate evacuation of 3000MW generation will be achieved;
at
existing / on-going 330kV transmission corridors to Jos (3 Circuits),
Kano (3 circuits) and Shiroro – Abuja (2 circuits).
30
Implementation Supergrid......Phase 2
• Phase 2:
This involves construction of 765kV DC Transmission lines from Afam –
Benin and 765kV DC transmission lines to both Olorunsogo – Osogbo.
With the following substations:
2.2.1
2.2.2
2.2.3
4 x 333MVA 765/330kV (1000MW) transformers at
Olorunsogo and associated inductive and reactive
power compensating equipment.
4 x 333MVA 765/330kV (1000MW) transformers at
Osogbo with associated inductive and reactive
power compensating equipment.
4 x 333MVA 330/765kV (1000MW) step up
transformers at Benin with all the
necessary inductive and reactive power compensating
equipment.
IMPACTS
Medium term gains of evacuation 1000MW generation each to
Olorunsogo and Osogbo.
31
Implementation of Supergrid... Phase 3
• Phase 3: This involves construction of 765kV DC
Transmission lines from Osogbo – Shiroro (with
a spur line to Birnin Kebbi) – Kaduna ( with a
spur line to Kano). With the following
substations:
• 2.3.1
4 x 333MVA 765/330kV (1000MW)
transformers at Kano with all the necessary
inductive and reactive power compensating
equipment.
32
Advantages of 765KV Supergrid
CONCLUSIONS
• A single-circuit 765kV line can carry as much
power as three single-circuit 500kV lines, three
double circuit 345kV lines, or six single circuit
345kV lines, reducing the overall number of lines
and rights of way required to deliver equivalent
capacity
• Minimizes Loss of Power during Transmission. Loss
of power during transmission is inversely
proportional to the square of the voltage, hence if
voltage is raised from 345kV to 765kV, loss of
power decrease by 20%.
33
Nigerian Power Grid: Existing On-going 330KV and Proposed 765KV Lines Network
REPUBLIC
OF
CHAD
Niamey
NIGER
SOKOTO
Sokoto
Katsina
132 kV
2
2
JIGAWA
Birnin
Kebbi
YOBE
Hadejia
BORNO
Gusau
KATSINA
Damaturu
2
ZAMFARA
Potiskum
Kano
KEBBI
Maiduguri
2
KANO
2
2
REPUBLIC
OF BENIN
2
2
KADUNA
BAUCHI
Bauchi
Kaduna
KAINJI
Jos
2
Gombe
2
ADAMAWA
GOMBE
2
2
KWARA
2
SHIRORO
NIGER
2
2
Minna
JEBBA/GS
Yola
Abuja
JEBBA/TS
IIorin
PLATEAU
2
ABUJA
2
OYO
Jalingo
2
Lafia
NASSARAWA
3
2
NIGERIA
TARABA
Makurdi
Ado
Ekiti
OGUN Olorunsogo
OSUN
2
AJAOKUTA
EKITI
2
MAKURDI
Akure
2
ALAGBADO
TO SAKETE
EGBIN
P/ST.
Ikeja
ONDO
2
2
Mambila
Aliade
2
2
Bali
BENUE
2
KOGI
Abeokuta
2
Lokoja
Osogbo
Ibadan
REPUBLIC
OF CAMEROON
2
ENUGU
EDO
2
1
Benin 1
LAGOS
4
Abakaliki
ONITSHA
1
4
AN AMBRA
SAPELE
P/ST.
IMO
2
2
330KV LINES (EXISTING) – MULTIPLE CIRCUITS
2
330KV LINES (FGN) – MULTIPLE CIRCUITS
2
330KV LINES (NIPP) – MULTIPLE CIRCUITS
2
330KV LINES (PROPOSED PROJECT)
– MULTIPLE CIRCUITS
CROSS
RIVER
Umuahia
330KV LINES - EXISTING
330KV LINES - FGN
ABIA
2
DELTA
POWER ST.
DELTA
EBONYI
Enugu
Akwa
Asaba
TRANSMISSION LINE LEGEND
2
330KV LINES - NIPP
Owerri
RIVERS
Port
Harcourt
2
2
2
BAYELSA
2
2
2 Uyo
765KV Super-Grid line
330KV LINES - PROPOSED PROJECT
Calabar
AKWA
IBOM
330 KV
BULK SUPPLY POINT
H
HYDROELECTRIC POWER STATION
AFAM
POWER ST.
ATLANTIC OCEAN
THERMAL POWER STATIONS
34
Elimination of Bottlenecks
•Continuous development of the network to
meet grid plans
•A lot more focus on maintenance of grid
through provision of maintenance materials
e.g breakers, isolators e.t.c
35
THANK YOU
36