2. Wave energyWave energy
Tradit ional sources of energy such as oil,Tradit ional sources of energy such as oil,
gas, and coal are non-renewable. I n cont rast ,gas, and coal are non-renewable. I n cont rast ,
waves are a renewable source of energy.waves are a renewable source of energy.
Wave energy conversion t akes advant age ofWave energy conversion t akes advant age of
t he ocean waves caused by t he int eract ion oft he ocean waves caused by t he int eract ion of
winds wit h t he ocean surf ace. Many wavewinds wit h t he ocean surf ace. Many wave
energy devices have been invent edenergy devices have been invent ed……
3. Wave energy devicesWave energy devices
TerminatorTerminator
DevicesDevices
Point absorber
Attenuators
4. Challenges CompaniesChallenges Companies
• Acquamarine PowerAcquamarine Power
• Ocean Power TechnologiesOcean Power Technologies
• Wave DragonWave Dragon
• Scot t ish MarineScot t ish Marine
• European Ocean Energy Associat ionEuropean Ocean Energy Associat ion
5. Advantages:Advantages:
1 Energy is f ree – no f uel is needed1 Energy is f ree – no f uel is needed
and no wast e is producedand no wast e is produced
2 Not expensive t o operat e and2 Not expensive t o operat e and
maint ainmaint ain
3 I t can produce a signif icant3 I t can produce a signif icant
amount of energyamount of energy
6. Disadvantages:Disadvantages:
1 Depends on t he waves – variable energy1 Depends on t he waves – variable energy
supplysupply
needs a suit able sit e, where waves areneeds a suit able sit e, where waves are
consist ent ly st rongconsist ent ly st rong
2 Some designs are noisy2 Some designs are noisy
3 Cost ly t o develop3 Cost ly t o develop
4 Visual impact if above wat er or on4 Visual impact if above wat er or on
shoreshore
5 Can dist urb or disrupt marine lif e –5 Can dist urb or disrupt marine lif e –
including changes in t he dist ribut ion andincluding changes in t he dist ribut ion and
7. Problems that the companies haveProblems that the companies have
to faceto face
They are a powerf ul sour ce of ener gy, but ar eThey are a powerf ul sour ce of ener gy, but ar e
dif f icult t o harness and conver t int odif f icult t o harness and conver t int o
elect r icit y in large quant it ies. The ener gyelect r icit y in large quant it ies. The ener gy
needs t o be conver t ed t o a 60 Hert zneeds t o be conver t ed t o a 60 Hert z
f r equency bef or e it can be added t o t hef r equency bef or e it can be added t o t he
elect r ic ut ilit y grid. . The r ealit y is t hat t heelect r ic ut ilit y grid. . The r ealit y is t hat t he
only long t er m problem is making t heonly long t er m problem is making t he
t echnology wor k at a cost of power which at echnology wor k at a cost of power which a
consumer is willing t o pay. One of t he biggestconsumer is willing t o pay. One of t he biggest
dif f icult ies is in int roducing a new t echnologydif f icult ies is in int roducing a new t echnology
int o a commercial market dominat ed byint o a commercial market dominat ed by
subsidised low cost f ossil f uel and nuclearsubsidised low cost f ossil f uel and nuclear
8. Thank you for yourThank you for your
attentionattention
