what are the pros and cons of tidal power?

Question

i have to know tonight!!!
10 pts!!!

Answer 1

Tidal power

Main article: Tidal power

Tidal energy involves building a dam across the opening to a tidal basin, called an estuary. The dam, called a barrage, is composed of turbines, located within tunnels in the dam that rotate when a tide comes in, generating electricity.

[edit] Pros

* Tidal power is free once the dam is built. This is because tidal power harnesses the natural power of tides and does not consume fuel. In addition, the maintenance costs associated with running a tidal station are relatively inexpensive.
* Tides are very reliable because it is easy to predict when high and low tides will occur. The tide goes in and out twice a day usually at the predicted times. This makes tidal energy easy to maintain, and positive and negative spikes in energy can be managed.
* Tidal energy is renewable, because nothing is consumed in the rising of tides. Tidal power relies on the gravitational pull of the Moon and Sun, which pull the sea backwards and forwards, generating tides.

[edit] Cons

* Tidal power is not currently economically feasible[citation needed], because the initial costs of building a dam are tremendous. Furthermore, it only provides power for around 10 hours each day, when the tide is moving in or out of the basin.
* The barrage construction can affect the transportation system in water. Boats may not be able to cross the barrage, and commercial ships, used for transport or fishery, need to find alternative routes or costly systems to go through the barrage.
* The erection of a barrage may affect the aquatic ecosystems surrounding it. The environment affected by the dam is very wide, altering areas numerous miles upstream and downstream. For example, many birds rely on low tides to unearth mud flats, which are used as feeding areas.
* Maximum energy production is limited to 2.5 terawatts. This is the total amount of tidal dissipation or the friction measured by the slowing of the lunar orbit.

Answer 2

Tidal Energy Pros And Cons

Answer 3

This Site Might Help You.

RE:
what are the pros and cons of tidal power?
i have to know tonight!!!
10 pts!!!

Answer 4

Pro - cheap source of power
Con - inefficient source of power for conversion to electricity
- equipment used to collect tidal power can be severely damaged by tidal waves/tsnamis

Answer 5

pros:
eco friendly

Cons:
fragile
expensive
varying effectiveness

Answer 6

Hi. The pros are obvious. Power, non-polluting, renewable. The cons are cost, possible impact on sea life and shipping. All in all a good idea.

Answer 7

It all depends on which way the wind is blowing.