Chashma Nuclear Power Complex

Kundian • Mianwali District • Punjab • Pakistan

One of Pakistan’s Leading Centres for Peaceful Nuclear Energy

Located near Kundian in the Mianwali District of Punjab, the
Chashma Nuclear Power Complex (CHASNUPP) is one of Pakistan’s
most important civilian nuclear power generation facilities. Developed on the
eastern bank of the River Indus, the complex represents decades of scientific
progress, engineering innovation, and international cooperation in peaceful
nuclear technology.

Operated by the Pakistan Atomic Energy Commission (PAEC),
the complex supplies dependable low-carbon electricity to Pakistan’s national
grid while supporting research, technical education, operator training, and
advanced engineering.

Quick Facts

Category	Details
Official Name	Chashma Nuclear Power Complex (CHASNUPP)
Location	Kundian, Mianwali District, Punjab, Pakistan
Operator	Pakistan Atomic Energy Commission (PAEC)
River	Indus River
Purpose	Commercial Nuclear Electricity Generation
Reactor Type	Pressurized Water Reactor (PWR)
Status	Operational

At a Glance

⚛ Nuclear Energy

A major contributor to Pakistan’s peaceful nuclear power programme and national
electricity production.

⚙ Engineering

Modern reactor systems designed for reliable, efficient, and continuous power
generation.

🎓 Technical Training

Specialised education and professional training for engineers, technicians, and
reactor operators.

🌊 Strategic Location

Positioned beside the Chashma Barrage and the River Indus, providing essential
water resources for plant operations.

Overview

What began as a single nuclear power project has grown into one of Pakistan’s
most significant centres for clean energy production. Today, the Chashma
complex includes multiple commercial nuclear power units, advanced engineering
facilities, training institutions, healthcare services, residential colonies,
and supporting infrastructure that serve thousands of employees and their
families.

Beyond electricity generation, the complex has contributed to technological
development, scientific research, workforce training, and regional economic
growth. Its continued expansion reflects Pakistan’s long-term commitment to
meeting increasing energy demands through peaceful nuclear technology while
maintaining internationally monitored safety standards.

1970s

Project conceived.

1993

Construction begins.

2000

First reactor enters service.

Today

A major national energy hub.

Background of the Chashma Project

The history of the Chashma Nuclear Power Complex reflects Pakistan’s long-term
efforts to strengthen its civilian electricity sector through peaceful nuclear
technology. The project was conceived during the 1970s, when the country’s
rapidly growing population and industrial expansion created an increasing demand
for reliable sources of electricity.

Early Planning

Initial planning for a nuclear power station at Chashma began with technical
assistance from France. During this period, Pakistan explored the development
of commercial nuclear power generation under international safeguards while
expanding its national energy infrastructure.

Political developments during the late 1970s, however, resulted in the
termination of French cooperation before the project could be completed. Plans
for a related nuclear fuel reprocessing facility operating under International
Atomic Energy Agency (IAEA) safeguards were also discontinued.

A New Beginning

Rather than abandoning the project, Pakistan continued to pursue civilian
nuclear power through new international partnerships. A major breakthrough came
when Pakistan and the People’s Republic of China agreed to cooperate in the
construction of a commercial nuclear power station at Chashma.

The project was undertaken jointly by the
Pakistan Atomic Energy Commission (PAEC) and the
China National Nuclear Corporation (CNNC), combining
Pakistan’s operational experience with Chinese reactor technology and
engineering expertise.

Construction Begins

Major construction activities officially commenced in
August 1993. Over the following years, engineers, scientists,
and thousands of skilled workers completed civil construction, reactor
installation, safety systems, turbine halls, cooling infrastructure, electrical
equipment, and supporting facilities across the site.

The development represented one of the largest engineering projects undertaken
in Pakistan during the 1990s and marked an important milestone in the country’s
civilian nuclear programme.

From Construction to Operation

Milestone	Description
August 1993	Construction of the first reactor officially begins.
3 May 2000	Unit-1 achieves first criticality following extensive testing.
13 June 2000	Electricity supplied to Pakistan’s national grid.
25 September 2000	Commercial operation under the Pakistan Atomic Energy Commission.

Growing Beyond a Single Reactor

The successful operation of the first generating unit demonstrated the
reliability of the Chashma project and laid the foundation for future expansion.
Additional reactors were subsequently approved and constructed, transforming the
site into Pakistan’s largest multi-unit nuclear power generation complex.

Today, Chashma represents decades of continuous investment in engineering,
scientific research, operational safety, and energy security, making it one of
the country’s most important strategic infrastructure projects.

1970s

Project proposed.

1978

French cooperation ends.

1993

Construction begins.

2000

Commercial power generation starts.

Timeline of the Chashma Nuclear Power Programme

History & Development Timeline

From an ambitious proposal in the 1970s to one of Pakistan’s most important
energy facilities, the Chashma Nuclear Power Complex has evolved through
decades of engineering, international cooperation, and technological progress.

Year	Milestone
1970s	Pakistan begins planning a new civilian nuclear power station at Chashma with technical cooperation from France.
1978	French assistance is suspended following international political developments, bringing the original programme to a halt.
1993	Construction of the first Chashma Nuclear Power Plant officially begins through cooperation between PAEC and CNNC.
3 May 2000	Unit-1 achieves first criticality after successful commissioning and testing.
13 June 2000	The first reactor is connected to Pakistan’s national electricity grid.
25 September 2000	Commercial operation of Chashma Unit-1 begins.
2011	Chashma Unit-2 enters commercial service, increasing generating capacity.
2015	Chashma Unit-3 begins commercial operation.
2017	Chashma Unit-4 becomes operational, completing the four-reactor complex.

Reactor Commissioning

Unit	Commercial Operation	Status
C-1	6 June 2000	Operational
C-2	27 January 2011	Operational
C-3	8 June 2015	Operational
C-4	6 March 2017	Operational

Key Achievement

The completion of four commercial reactor units transformed Chashma into one of
Pakistan’s largest nuclear electricity generation centres, providing dependable
base-load power while supporting scientific research, engineering development,
and highly skilled employment.

1970s

Planning

1993

Construction

2000

First Power

2017

Four Units Complete

The Chashma Nuclear Power Complex

The Chashma Nuclear Power Complex (CHASNUPP) is one of
Pakistan’s most significant energy projects. Situated near Kundian in
Mianwali District, Punjab, the complex has developed into a major centre for
peaceful nuclear electricity generation, engineering, research, and technical
training.

Located on the eastern bank of the River Indus near the historic Chashma
Barrage, the site was selected because of its strategic location, reliable
water supply, transportation links, and available land for future expansion.

Inside the Complex

⚛ Nuclear Power Plants

Four commercial nuclear reactor units generating electricity for Pakistan’s
National Grid.

⚙ Engineering Facilities

Advanced mechanical, electrical, and nuclear engineering support systems.

🎓 Training Centre

Professional education and simulator-based operator training for engineers and
reactor staff.

🏘 Township

Residential colonies, schools, hospital, parks, sports facilities and
community services.

Why Chashma Was Built Here

Factor	Importance
River Indus	Provides the cooling water required for reactor operations.
Chashma Barrage	Reliable long-term water management infrastructure.
Railway Network	Efficient transportation of heavy engineering equipment.
Road Connections	Direct links with Kundian, Mianwali, and the national highway system.
Expansion Space	Large area available for future development and supporting facilities.

International Cooperation

The Chashma project represents decades of technical cooperation between
Pakistan and China in the field of peaceful nuclear energy. The reactors were
constructed under international safeguards, with Pakistan Atomic Energy
Commission (PAEC) responsible for operation, maintenance, and continuous
improvement of the facilities.

Energy for Pakistan

⚡ Reliable Power

Continuous electricity generation throughout the year.

🌿 Clean Energy

Low-carbon electricity supporting Pakistan’s energy mix.

🔬 Technology

Supports scientific research and advanced engineering development.

Did You Know?

The Chashma Nuclear Power Complex is more than a power station. It functions as
a complete scientific community with residential townships, hospitals,
educational institutions, engineering workshops, simulator training centres,
security infrastructure, and environmental monitoring systems operating
together on one integrated campus.

Chashma Nuclear Power Plants

The following section explores Chasma Pictorial Gallery, its construction,
commissioning, and other facilities for Pakistan’s national electricity system.

Chashma Nuclear Power Plants (CHASNUPP I–IV)

Chashma Nuclear Power Plants

The Chashma Nuclear Power Complex consists of four commercial nuclear power
plants constructed over nearly two decades. Together they represent one of
Pakistan’s largest investments in peaceful nuclear energy and continue to make
an important contribution to the country’s national electricity supply.

Power Plant	Commercial Operation	Capacity	Status
CHASNUPP-1 (C-1)	6 June 2000	≈325 MW	Operational
CHASNUPP-2 (C-2)	27 January 2011	≈325 MW	Operational
CHASNUPP-3 (C-3)	8 June 2015	≈340 MW	Operational
CHASNUPP-4 (C-4)	6 March 2017	≈340 MW	Operational

CHASNUPP-1

The first reactor at Chashma marked the beginning of commercial nuclear power
generation at the site. Construction began in August 1993, the reactor achieved
first criticality on 3 May 2000, connected to the national grid on 13 June
2000, and entered commercial operation later that year. The successful
completion of Unit-1 established Chashma as a major centre of Pakistan’s
civilian nuclear energy programme.

CHASNUPP-2

The second reactor expanded the generating capacity of the complex and
demonstrated the continued success of Pakistan-China cooperation in nuclear
engineering. Unit-2 entered commercial operation on 27 January 2011, providing
additional reliable electricity to Pakistan’s growing national grid.

CHASNUPP-3

Construction of the third reactor introduced further technological
improvements, modern engineering systems, and enhanced operational efficiency.
The unit began commercial operation on 8 June 2015 and significantly increased
the total generating capacity of the Chashma Nuclear Power Complex.

CHASNUPP-4

Commercial operation of Unit-4 began on 6 March 2017, completing the four-unit
nuclear power station. Together the four reactors form one of Pakistan’s most
important sources of dependable base-load electricity.

Combined Contribution

⚡ Reliable Electricity

Continuous power generation supporting Pakistan’s National Grid.

🌿 Clean Energy

Low-carbon electricity reducing dependence on fossil fuels.

🔬 Advanced Engineering

Modern reactor technology operated by highly trained Pakistani engineers.

🇵🇰 National Development

Strengthening Pakistan’s long-term energy security and scientific capability.

Four Reactors • One Mission

Providing safe, reliable and peaceful nuclear energy for Pakistan’s future.

Nuclear Engineering Training Centre (CHASCENT)

Developing the Next Generation of Nuclear Engineers & Reactor Operators

The Chashma Centre of Nuclear Training (CHASCENT) is the
primary training institute for personnel working at the Chashma Nuclear Power
Complex. The centre provides professional education, simulator-based reactor
training, technical courses, engineering workshops, and continuous operational
development for plant employees.

Training programmes combine classroom instruction with practical exercises,
allowing engineers and reactor operators to develop the technical knowledge and
decision-making skills required for safe commercial nuclear power generation.

Training Facilities

🎓 Academic Programmes

Engineering Diploma Courses
Technical Training
Professional Development
Specialised Nuclear Education

🖥 Full Scope Simulator

Control Room Simulation
Emergency Response Training
Operator Certification
Performance Evaluation

Life Inside Chashma Township

The Chashma Nuclear Power Complex is more than an industrial facility. It
includes a modern township designed to provide a comfortable living environment
for employees and their families. The community includes housing, healthcare,
education, recreation, shopping areas, parks, sports facilities, and places of
worship.

Facility	Purpose
🏠 Residential Colony	Modern housing for employees and their families.
🏥 PAEC Hospital	Healthcare and emergency medical services.
🏫 Schools	Education for children within the township.
🛍 Shopping Area	Daily commercial and retail services.
🌳 Public Parks	Family recreation and landscaped green spaces.
🏏 Sports Facilities	Indoor and outdoor recreational activities.
🕌 Mosques	Religious and community gatherings.

Community Highlights

🏥 Healthcare

Modern medical facilities operated by PAEC.

🎓 Education

Schools and professional learning facilities serving the community.

🌳 Recreation

Parks, clubs, sports grounds and family entertainment.

Engineering Excellence

From reactor operations and safety systems to education, healthcare, and
community development, the Chashma Nuclear Power Complex represents one of
Pakistan’s most comprehensive scientific and engineering communities. The
integration of modern infrastructure with highly trained personnel has enabled
the complex to remain a key contributor to Pakistan’s peaceful nuclear energy
programme.

Satellite Imagery & Site Development

The next section explores the Chashma Nuclear Power Complex through historical
satellite imagery, site expansion, and the evolution of its infrastructure over
time.

Satellite Imagery & Site Development

Observing the Growth of Pakistan’s Largest Nuclear Energy Complex

Over the past three decades, satellite imagery has documented the remarkable
transformation of the Chashma Nuclear Power Complex from a single reactor site
into one of Pakistan’s largest centres for civilian nuclear power generation.
Each construction phase reflects continued investment in engineering,
infrastructure, safety systems, and supporting facilities.

Site Location

Location	Information
District	Mianwali, Punjab, Pakistan
Nearby Town	Kundian
River	Indus River
Adjacent Landmark	Chashma Barrage
Approximate Coordinates	32.38858° N, 71.44955° E

Historic Satellite View

Historical satellite imagery captured during the development of the Chashma
site illustrates the steady expansion of reactor buildings, cooling systems,
administrative facilities, security infrastructure, and supporting engineering
services.

Early imagery showed the operational status of CHASNUPP-1 together with
construction progress on CHASNUPP-2. Later observations documented additional
development associated with Units 3 and 4, demonstrating the long-term
expansion of Pakistan’s civilian nuclear energy programme.

🛰 February 2010

CHASNUPP-1 Operational
CHASNUPP-2 Near Completion
Cooling Towers Visible
Reactor Building Completed
Administrative Expansion

🏗 Later Development

Construction of Units 3 & 4
Additional Support Buildings
Expanded Security Zones
Infrastructure Improvements
Growth of Residential Township

Engineering Expansion

⚛ Reactors

Commercial nuclear generating units expanded in phases.

🏢 Infrastructure

Control buildings, workshops and engineering facilities.

🌳 Township

Residential, healthcare and educational facilities continued to grow.

Interesting Facts

Feature	Description
Cooling System	Uses water supplied through the nearby Indus River and Chashma Barrage.
Expansion	Developed from a single reactor into a four-unit commercial power complex.
Engineering	Includes workshops, laboratories, maintenance facilities and training centres.
Community	Supports a modern residential township with schools, hospitals and recreation.

Continuing Development

The Chashma Nuclear Power Complex continues to represent one of Pakistan’s
largest scientific and engineering achievements. Continuous improvements in
technology, infrastructure, safety, and operational excellence ensure that the
site remains an important contributor to the country’s long-term energy
security.

Explore Chashma Township

The following section presents a visual tour of Chashma Township, including the
residential colony, PAEC Hospital, parks, markets, Abaseen Club, and other
community landmarks through an expanded pictorial gallery.

Chashma Township Pictorial Gallery

Exploring the Community Beyond the Nuclear Power Station

The Chashma Township was developed to support employees of the Pakistan Atomic
Energy Commission and their families. Over the years it has grown into a
well-planned community featuring residential neighbourhoods, healthcare,
education, recreation, shopping areas and landscaped public spaces.

Welcome to Chashma Township

Tree-lined roads, landscaped parks and modern residential neighbourhoods make
Chashma Township one of the most organised planned communities in the region.

PAEC Hospital

A modern healthcare facility providing medical services for employees,
families and the surrounding community.

Residential Colony

Purpose-built residential sectors with landscaped surroundings and community
facilities.

Abaseen Club

A popular recreational venue hosting indoor activities, social events and
community gatherings.

Town Market

Daily shopping facilities serving residents with food, groceries and local
businesses.

Community Spaces

Community areas throughout the township provide open gathering spaces,
pedestrian walkways and recreational environments for residents.

Parks & Recreation

Public parks provide green open spaces, children’s attractions and recreational
facilities, contributing to the township’s family-friendly environment.

Township Highlights

Facility	Description
🏠 Residential Colony	Modern housing for employees and their families.
🏥 PAEC Hospital	Healthcare and emergency medical services.
🏫 Educational Facilities	Schools and professional training institutions.
🛍 Shopping Centre	Retail stores, markets and essential daily services.
🌳 Parks	Landscaped gardens and recreational spaces.
🏸 Recreation	Sports facilities, clubs and community events.

Next Section

Continue to the history of nuclear engineering, technological development,
international cooperation, environmental management and the future of the
Chashma Nuclear Power Complex.

Engineering & Technology

Innovation, Safety and Sustainable Energy Production

The Chashma Nuclear Power Complex represents one of Pakistan’s most advanced
engineering achievements. Thousands of engineers, scientists, technicians and
specialists work together to ensure continuous, safe and efficient production
of electricity for the national grid.

⚛ Nuclear Reactors

Commercial pressurized water reactors designed for long-term, reliable
electricity generation.

⚙ Modern Engineering

Mechanical, electrical, civil and nuclear engineering operate together through
advanced monitoring and control systems.

💻 Digital Control

Modern instrumentation continuously monitors reactor performance and operating
conditions.

🛡 Safety Systems

Multiple independent safety systems provide several layers of protection during
normal operation.

Engineering Disciplines

Department	Primary Responsibility
Nuclear Engineering	Reactor operation and nuclear systems.
Mechanical Engineering	Turbines, pumps, valves and rotating equipment.
Electrical Engineering	Power generation, transmission and grid connection.
Instrumentation & Control	Digital monitoring and automated control systems.
Civil Engineering	Buildings, containment structures and infrastructure.
Chemical Engineering	Water chemistry and supporting process systems.

Safety Philosophy

Commercial nuclear power plants are designed using a defence-in-depth approach,
where multiple engineered barriers and independent safety systems work together
to protect personnel, the public and the environment. Continuous monitoring,
preventive maintenance and regular operator training support safe plant
operations.

Environmental Stewardship

🌿 Low Carbon

Produces electricity with very low greenhouse gas emissions during operation.

💧 Water Management

Uses the nearby Indus River under controlled operational procedures.

🌍 Monitoring

Environmental programmes help monitor surrounding conditions.

Interesting Facts

Fact	Information
Construction	The first reactor began construction in August 1993.
Commercial Power	Unit-1 entered commercial operation in 2000.
Expansion	The complex expanded from one reactor to four operational units.
Education	CHASCENT provides specialised nuclear training and professional education.
Township	The site includes housing, schools, healthcare and recreational facilities.

The Future of Chashma

As Pakistan’s demand for electricity continues to grow, the Chashma Nuclear
Power Complex remains an important contributor to national energy security,
scientific research and technological advancement. Continued investment in
engineering excellence, workforce development and operational reliability
ensures that the complex will remain a cornerstone of Pakistan’s peaceful
nuclear energy programme for years to come.

Continue Exploring

Explore more destinations across Mianwali District including Kundian, Chashma
Barrage, Kalabagh, Mianwali City, Isakhel, Namal Valley and the River Indus.

Explore the Chashma Region

Where Engineering Meets the Indus River

Chashma is more than a centre of energy production. Situated on the left bank
of the Indus River in southern Mianwali District, the region combines modern
engineering with river landscapes, wetlands, agriculture and transportation.
Its strategic location has made it one of Pakistan’s most important centres for
power generation, irrigation and scientific development.

Nearby Places of Interest

Location	Description	Approx. Distance
Kundian	Historic railway junction and gateway to the Chashma region.	Nearby
Chashma Barrage	Major irrigation and flood-control structure on the Indus River.	Adjacent
Chashma Lake	Wetland ecosystem known for migratory birds and scenic views.	Nearby
Mianwali City	District headquarters with historical landmarks and public services.	Approximately 18 km
Kalabagh	Historic town overlooking the Indus River.	North of Chashma

Regional Importance

⚡ Energy

Nuclear and hydropower generation supporting Pakistan’s electricity network.

🌊 Water

The Indus River and Chashma Barrage sustain irrigation, fisheries and wetlands.

🚆 Transport

Road and railway connections link the region with the rest of the country.

Quick Facts

Category	Information
Province	Punjab
District	Mianwali
Nearest Town	Kundian
River	Indus River
Main Features	Nuclear Power Complex, Chashma Barrage, Hydel Power Station, Wetlands
Economy	Energy, irrigation, fisheries, transport and engineering services

About This Article

This article brings together the history, engineering, geography and community
life of the Chashma Nuclear Power Complex and the surrounding region. It is
intended as a historical and educational overview of one of the most important
scientific and infrastructure developments in Mianwali District.

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Preserving the History, Heritage, Geography and People of Mianwali District.