This document discusses tidal energy and how it works. Tidal energy harnesses the power of tides, which are caused by gravitational forces from the moon and sun. There are two main types of tidal power plants - tidal barrages and tidal current turbines. Tidal barrages are dams built across estuaries or bays, while tidal current turbines use the kinetic energy of moving water like wind turbines use wind. Major tidal plants exist in places like France, India, and South Korea. The document outlines the pros and cons of each tidal power technology and notes tidal energy is a renewable source but installation and maintenance can be challenging.

1. The Tidal Energy
JAYANT KEDIA
UE114024

2. Index
• Introduction
• Tides
• Tidal power
• How does it works?
• Types of tidal plants
• Pros and Cons of Tidal Power
• Major tidal power plants

3. Introduction
Tidal power, also called tidal energy, is a
form of hydropower that converts the
energy of tides into useful forms of power -
mainly electricity. This is the only form of
energy whose source is the moon.

4. Tides
Tides are the rise and fall of sea levels caused by the
combined effects of the gravitational forces exerted by
the Moon and the Sun and the rotation of the Earth.

5. Tides Formation

6. The high tide

7. The low tide

8. Tidal power

9. Tidal Power
Tidal power is actuated by a turbine under
water that spins making the mechanical
energy to electrical through a generator
that send the electrical energy to the
shore.

10. How does it work?
The tide flows in
two directions
under the water

11. How does it work?
When the tide
flows forward,
the propellers
turn anti-
clockwise

12. How does it work?
When the tide
flows
backwards,
the propellers
turn in the
opposite
direction

13. Tidal Energy

14. Types of tidal plants
Tidal Barrage
Are Typically dams, built
across on estuary of bay
Tidal current
turbines
Make use of the kinetic energy
of moving water to power
turbines in a similar way to
wind turbines that use wind to
power turbines

15. Types of tidal plants
Tidal Barrage Tidal current
turbines

16. Tidal
Barrage
The Rance tidal
barrage in
North-West
France is the
largest in the
world

17. Tidal
current
turbines

18. Significant benefits from using
Tidal Energy include:
Electrification of isolated communities
 Generation for the grid Regrowth of
coral reefs using mineral accretion
technology
Substitution of imported petroleum used
to generate electricity

19. Pros and Cons of Tidal Power

20. Tidal Barrages
Pros
 Mature technology that has
been around for nearly 50
years
 Reliable energy source.
Cons
 High costs of construction
 Environmental impacts on
marine life
 Low power output in
comparison to other energy
source like coal and
nuclear power plants .

21. Tidal Current Turbines
Pros
 Able to utilize both ebb and
flood tides
 Tidal current turbines are not
large massive dam
structure.
Cons
 Tidal current turbine
technology is young in its
development
 Installation and
maintenance challenges
 Environmental impacts are
still being tested

22. Major Tidal plants in World

23. Tidal plants in India
 West Bengal Renewable Energy Development Agency in
sunderbans.
 The Indian state of Gujarat is planning to host South
Asia's first commercial-scale tidal power station. The
company Atlantis Resources is to install a 50MW tidal
farm in the Gulf of Kutch on India's west coast, with
construction starting early in 2012. later on it is decided
to increase the capacity up to 250MW plants.

24. Tidal plant in Kerala
 Situated near the breakwaters of Vizhinjam Port which is
about 20 km from Thiruvananthapuram city. The station
started its commercial operation in 1991. This oscillating
water column (OWC) produces about 150 kw of power

25. Thank you for your
attention.