S N E L , S N E L ,

THE STATE POWER THE STATE POWER UTILITY OF THE DRCUTILITY OF THE DRC

PRESENTPRESENT

INGA :PROJECTS OF EXISTING INFRASTRUCTURES

REHABILITATION AND DEVELOPMENT OF THE SITE

presentation at the « African Utility Week »Cape Town , 16 – 19 May 2005

DEMOCRATIC REPUBLIC OF CONGO

SOCIETE NATIONALE

D’ELECTRICITE

1. GENERALITIES1.1 DRC Hydro Sites and Potential

1.x Development Scheme / Existing and Planning Power Stations

2. CURRENT SITUATION

2.2 Common facilities for the two existing power stations

2.3 Electroméchanical Equipments

2.1 Introduction

1.x Location / Characteristics of the Inga site

4. ACTIONS TO BE UNDERTAKEN

3.1 Short , Medium and Long term Objectives

4.x Short , Medium and Long term Actions

3. AIMED OBJECTIVES

MatadiMoanda

Lukula

Tshela

Inga

SangaKikwit

Masi-

Kenge Mweka

Tshikapa

Kananga

Lungudi

TshalaLubilanji

Kabinda

Kaniama

Mbanza-Kongolo

Kabalo

Kasongo

Kalemie

Kindu

Goma

Bukavu

Kisangani

Bandundu

BulunguIlebo

Tembo

Idiofa

InongoInongo

MbandakaBoende

Basankusu

Lisala Bumba

GbadoliteLibenge

Zongo

Gemena

Mobayi

Buta

Kyimbi

Kamina

Beni

Butembo

Kilubi

KolweziLikasi

Lubumbashi

Boma

NsekeNzilo

KoniM´sha

Piana Mwanga

Lepudungu

Nepoko

Mugombe

KakobolaKitona

Katende

Gungu

Kinshasa

Kamimbi

Ruzizi

Yangambi

Isiro

Kisalala

Rutshuru

Semliki

manimba

Bamba

Feshi

Kahemba

Kasongo-

PopokabakaNgunguKimvula

Seke-Banza

Lunda

Zongo

Bagata

MushieKutu

Inongo

Kiri

Oshwe

Mbuji Mayi

DembaDimbelenge

LusamboLubefu

Lodja

Kole

Katako-Kombe

Luebo

Dekese

Kazumba

Mwene-Ditu

Luiza

Lubao

Sakania

Kipushi

Tshopo

Mpozo

Mitwaba

ManonoMoba

Bukama

Malemba-Nkulu

Kasenga

NyunzuMani

Kabongo

Dilolo

Sandoa

Kapanga

Luozi

Kasanza

IngendeBikoro

Ruki

BefaleBolomba

Bongandanga

Bomongo

BudjalaKungu

Bosobolo

Businga

Monkoto

Bokungu

Ikela

Djolu

Bumba Aketi

DingilaBambesa

AngoBondo

Poko

Niangara

RunguM’zoro

Faradje

Mahagi

AruWatsa

Wamba

Bafwasende

BanaliaBasokoBengamisa

Isangi

YahumaBabeba

WageniaWanie-Rukula

UbunduOpala

MambasaIrumu

Budana

BuniaSoleniama

Djugu

Kibombo

Fizi

MangembeKampene

PangiUvira

MwengaMungombe

WalunguShabunda

MogaShabunda

LulinguKabare

Kalehe

Existing 220 kV transmission line

Line in project

HVDC Inga - Kolwezi

Existing hydro power plant

Hydro power plant in project

Existing 110 - 132 kV transmission line

Existing thermal power plant

Legend

100 2000 300 400 500

Kilometers

DRC HYDRO SITESAND

POTENTIAL

Hydro potential : 100.000 MW OF WHICH

56.000 MW at different sites spread all over the country ;

44.000 MW concentrated at the Inga site.

Equator

INGA SITE LOCATION

MatadiMoanda

Tshela

Boma

Kinshasa

Mbanza-NgunguINGA15O km

225 km

IN THE DEMOCRATICREPUBLIC OF CONGO

* 225 km DOWNSTREAM FROM KINSHASA

* 150 km UPSTREAM BEFORE THE MOUTH OF THE CONGO RIVER

INGA SITE CHARACTERISTICS

a) EXCEPTIONNALLY REGULAR RIVER FLOW

CONGO RIVER BASIN

- Basin Surface : 3.800.000 km2

- DRC Surface : 2.345.000 km2

Co

ng

o R

iver

- On either side of the Equator Equator

J F M A M J J A S O N D

60 000

MONTH

INGA SITE CHARACTERISTICSb) SIGNIFICANT RIVER FLOW

Inter-annual Module40.000 m3/s

Historical Min (1905) :21.400 m3/s

Historical Max (1961) :83.400 m3/s

10 000

20 000

30 000

40 000

50 000

AV

ER

AG

E R

IVE

R F

LOW

(m

3/s

)

0

c) SIGNIFICANT NATURALSLOPE

102 m on a straightdistance of 15 km only

d) APPROPRIATETOPOGRAPHY FOR A PROGRESSIVEEQUIPMENT OF THESITE

INGA SITE CHARACTERISTICS

INGA SITE GENERAL VIEW

SIKILA Island

15 k

m

BU

ND

I R

iver

EO

N

S

e) LOW GENERATION COSTS

f) POTENTIAL

OF SITE

± 44.000 MW

320 TWh/yearWILD

ENERGY WASTED

INGA =

MOST POWERFULHYDRO-POWERIN THE WORLD

Installed kW : 671 à 339 USD/kW

Produced Energy : 1,44 à 1,08 USc/kWh

Before :•

- «Three Gorges» (China) : 18.000 MW- «Itaipu» (Brazil/Paraguay) : 12.000 MW

INGA SITE CHARACTERISTICS

DEVELOPMENT SCHEME

MAIN WORKS

Dam the River

Evacuators

Restitution Channels

Water intake Channels

Inga I

Inga II

Inga III

Grand Inga

Matamba Dam

Bundi Dam

EXISTING POWER STATIONS

INGA I INGA II

Commissioned in

Water head (m)

TurbineWater flow (m3/s)

Number of units

Installed Capacity (MW)

Production (TWh/an)

1972

50

780

6

351

2,4

1982

58

2.800

8

1.424

10,4

INGA I

INGA II

PLANNED POWER STATIONS

INGA III Gd INGA

Water head (m)

Turbine Water flow (m3/s)

Number of units

Installed Capacity (MW)

Production (TWh/an)

60

6.300

16

3.500

23,5

150

26.400

52

39.000

288,0

GRAND INGA

INGA 3

CURRENT SITUATION

INTRODUCTION :

DUE TO :

AN IMPORTANT SAND DEPOSIT IN THE INTAKE CHANNEL;

THE PRESENCE OF A MOUNTING ROCK AT THE WATER INTAKE ;

SEVERAL DESIGN AND IMPLEMENTATION FAULTS.

Water Highest Level 156

Water Lowest Level 146

Originally Planned Treshold Level - 142,5

Bottom of Channel Medium

Level – Profile 100 , 200 et 300

125

145,7

140

CONSEQUENCES :

1. COMMON FACILITIES

A. CIVIL WORKS :

Total capacity now limited to 1.124 MW instead of 1.775 MW

Total capacity with the lowest water level : 600 MW

Unrelliable plants for power generation

CURRENT SITUATION

DAMS OF THE TWO POWER PLANTS TEND TO MOVE DOWNSTREAM;

WEAK WATER FLOW IN THE INTAKE CHANNEL;

WATER DRAINING SYSTEM FOR THE TWO DAMS AND FOR INGA 2 POWER PLANT NOT OPERATIONNAL ;

DESTRUCTION OF CIVIL WORKS (Protection dike, Coffer-dam)

DEPRECIATION OF THE POWER PLANT BUILDINGS.

B. HV SWITCHYARD STATION :

DEFAULTING PROTECTION EQUIPMENTS (circuit-brakers , relays)

C. GENERAL SERVICES :

FAILURE OF SEVERAL EQUIPMENTS ( Water exhaust system , fire protection, lifts, air-conditionning, .. . )

D. LOGISTICS :

INSUFFICIENT MEASUREMENT EQUIPMENTS , TOOLS AND SPARE PARTS FOR CURRENT OPERATIONS ;

LACK OF MEANS FOR MODERN MANAGEMENT ( Computers , ....) ;

ETC. ..

1. COMMON FACILITIES (cont’d)

CURRENT SITUATION

2. CURENT SITUATION OF THE POWER STATIONS ELECTROMECHANICAL EQUIPMENTS :

A. INGA 1 POWER PLANT :

TURBINES SERIOUSLY DAMAGED BY CAVITATION ;

REDUCED AVAILABLE CAPACITY ( 2 Units not operating out of 6) ;

DESIGN FAULTS ON CERTAIN EQUIPMENTS .

REDUCED AVAILABLE CAPACITY ( 5 Units not operational out of 8) ;

DESIGN FAULTS ON CERTAIN EQUIPMENTS ( speed regulator , aspirators protection , …) ;

LACK OF REGULAR MAINTENANCE ON EQUIPMENT ( Duration for revision not respected , ..) ;

ETC. ..

B. INGA 2 POWER PLANT :

CURRENT SITUATION

Short Term : partial rehabilitation of the two powerplants for a reliable generation of 1300 MW ;

Long Term : construction of new powerplants (Inga 3 and Grand Inga) for the materialization of major african interconnectors Nothern Africa (Egypte) , Western Africa (Nigeria) , Southern Africa (RSA) .

Medium Term : full rehabilitation of the two powerplants for a reliable generation of the full capacity of 1775 MW ;

GLOBAL OBJECTIVE : TO MEET THE INTERNAL AND EXTERNAL DEMAND , SPECIALLY THE DIMINUSHING OF CAPACITY IN THE SOUTHERN AFRICA REGION .

PARTIAL REHABILITATION AND REFURBISHMENT OF UNITS OF THE TWO POWERPLANTS .

SAND DREDGING INSIDE THE INTAKE CHANNEL .

REPAIR DAMMAGED OR ACTUAL NON OPERATIONNAL EQUIPMENTS .

ETC. …

FULL REHABILITATION OF THE EXISTING INGA 1 ET INGA 2 POWERPLANTS

CONSTRUCTION OF NEW POWERPLANTS THROUGH THE PUBLIC_PRIVATE PARTNERSHIPS

PPA(Cost +)

Project Company(SPV)

x % For X / y % for Y

Société Nationale d’Électricité of DRC

(SNEL)

Clients

Bankable International

Entrepreneurs Bank Pool

CollectionAccount

Reserve Account

International Operator with Hydro Experience

Transit(Cost ++)

Garantees

Fair completion,Performance

Price, etc.

Contracts Technical Assistance

and/or Maintenance

Rehabilitation Contract

Loan Agreement

Long term (25 years min)100% generation with

obligatiion to supply the DRC

Steering Committee SNEL / SPV

Joint Technical Committee

Operation Follow Up

Rehabilitation Follow Up

Construction Contract

E.G. : A PARTNERSHIP STRUCTURE FOR THE IMPLEMENTATION OF THE INGA PARTIAL REHABILITATION PROJECT

POWER HIGHWAYS FROM THE INGA SITE PROJECT :

• INGA 3 : WESTCOR Project• Grand Inga : EHV Lines to Northern,

Western and Southern Africa (Egypt , Nigeria , RSA), etc. ….

POWER HIGHWAYS FROM INGA SITE

Northern Highway

Northern Highway (alternative route)

Southern Highway (Eastern corridor)

Southern Highway (Western corridor)

Western Highway

LEGEND

Existent Sub-stations

Planned Sub-stations

Interconnection Projects

Converter Sub-stations C

ON

GO

LIBYEALGERIE

MAROC TU

NIS

IE

NIGERMALI

MAURITANIE

SAH

AR

A O

cc.

COTED’IVOIRE

GUINEE

GH

AN

A

TO

GO

BE

NIN

SENEGALGAMBIE

SIERRA LEONE LIBERIA

BURKINAFASO

GUINEE EQU.

LESOTHO

SWAZILAND

MO

ZAM

BIQ

UE

MA

DA

GA

SC

AR

MA

LA

WI

TANZANIA

KENYA

OU

GA

ND

A

R.

B.

SOM

ALIE

ETHIOPIE

DJIBOUTI

ERITREE

GUINEE-BISSAU

COMORES

SAO TOME &PRINCIPE

TCHADSOUDAN

RCA

NIGERIA

ANGOLA

AFRIQUE DU SUD

BOTSWANA

INGA

EGYPTE

CAMEROUN

GABON

NAMIBIE

ZIMBABWE

ZAMBIE

REP. DEM. CONGO

Calabar