Pros and Cons of Renewable Energy

Published on August 2021 | Categories: Documents | Downloads: 0 | Comments: 0 | Views: 15
of x
Download PDF   Embed   Report

Comments

Content

 

Pros and Cons of Renewable/alternative Renewable/alternative sources of  energy  Pros

Cons

Tidal Energy  Renewa wabl ble. e. Re Requ quir ires es no • Rene fuel.. fuel • Emission-free • Reli Reliab able le,, a pl plan antt can can la last st 100 years • Hig e!ici cie ency • Pr Pre" e"ic icta tabl ble e ou outp tput ut • Coul" poten potentiall tially y pro#i"e pro#i"e a storm surge barrier. • En#ir En#ironmen onmental tal impacts impacts are are local, not global

•E$pensi#e to buil" • %ery loca locatio tion n speci speci&c &c 'only 'only 20 sites i"enti&e" sites  i"enti&e" wit ig potential( • )on-continuous, storage storage or gri"bac*up require" •+ocations are often remote • arrages may restrict access to open water •Can cange ti"al le#el of surroun"ing area • mpact on &s, marine mammals an" bir"s • isrupts regular ti"al ti"al cycles •ecreases salinity  in  in ti"al basins • /u /u" " ats ats 'wer 'were e many many bir"s bir"s fee" fee"(( a"#ersely"irt, impacte" • Captures waste an" pollution near te coast •Re"uces *inetic energy in te ocean

 Wind energy  energy  Clean energy, no fuel to "rill,  s mentione" earlier earlier,, te win" is frac*, mine, transport or inconsistent, unstea"y an" burn unpre"ictable • Re Rene newa wabl ble e an" an" su sust stai aina nabl ble e • 4in 4in" " power power is is not cea ceap p an" an" li*e li*e • Co Cost sts s are are re rela lati ti#e #ely ly lo low w an" an" many energy sources, rely on continue to "ecrease go#ernment subsidies subsidies to  to remain • b bun un"a "ant nt "o "ome mest stic ic su supp pply ly competiti#e. •



'deand 16X current electric deand2( 2( • 3 3e e powe powerr is is ess essen enti tial ally ly fre free e once te infrastructure is pai" for. • +o +ow w lif life e cyc cycle le ca carb rbon on footprint. rea*e#en in eig!t ont!s. ont!s. • Can be use" alost anyw!ere.. anyw!ere

• 4in" 4in " farms farms aretat are genmigt generall erally y locate" loca in rural areas be te" oterwise picturesque. 3ey are consi"ere" by some people to be an eyesore. • 5ome peop people le compla complain in of nois noise e from te turbines. • 4il" 4il"life life impact impact.. )ot only only bir"s bir"s,, but bats a#e e$perience" fatalities. • +oca +ocali6e" li6e" impa impact ct on on nigt-ti nigt-time me temperatures temperatur es an" weater

"iofuel #roduction by algae •

io-base" fuel wit essentially



)ee" to be grown un"er controlle"



carbon neutral combustion rop in replacement for



temperature temperatur e con"itionsamount of Requires a consi"erable

 

• •









• •



petroleum-base" e" liqui" fuels petroleum-bas nerently renewable  bsorbs carbon carbon "io$i"e as it grows ot waste C78 an" wastewater can be use" as nutrients Higer energy per-acre tan oter bio-fuels Can be grown on lan" unsuitable for oter types of agriculture 5calable9 $tudy  foun"  foun" tat 1: percent of ;.5. oil imports coul" be met wit algae n#estments are being ma"e Pro"uction is presently scaling up ')a#y buying 100%000 gallons tis gallons  tis year( Researc as been un"erway for <0 years

• •





• •

lan" an" water Cold &ow  issues  issues wit algal biofuel 5ome researcers using genetic engineering to engineering  to "e#elop optimal algae strains Requires #!os#!orus #!os#!orus as  as a fertili6er wic is becoming scarce =ertili6er pro"uction is carbon "epen"ent Relati#ely ig upfront capital costs )ot clear yet wat te ultimate cost cost   per gallon will be. Presently too ig.

$olar #ower fro #!otovoltaic cells





• •





• •





• •



Clean energy. )o combustion. )o greenouse gas emission from use. ne$austible an" abun"ant >fuel? supply  #ailable  #ailab le nearly e#erywere e#erywere 4ell suite" for "istribution generation 3ecnology e$ists to"ay an" is rapi"ly impro#ing @enerates electricity "irectly from sunligt )o mo#ing parts require" Power generation generation is silent. )o noise or pollution. +ittle or no transmission require" /atces up well wit aircon"itioning nee" Require minimal maintenance @rants an" incenti#es are sometimes a#ailable E'cess !eat can be use" for co(generation

















• •



ntermittent source. )ot a#ailable at nigt or un"er clou"s. Relatively !ig! cost, cost, especially wit storage Requires in#erter to pro"uce C current Requires storage or gri" connection for continuous roun"te-cloc* use +ess a#ailable for eating "eman" 'time ofaterials require" "ay an" season( E'otic aterials  require" in many tin-&lm systems Requires a relati#ely large amount of open space Relati#ely low e!iciency 'around 'around 1)(*0 #ercent+ =ragile materials Possible Possib le aestetic issues 3ecnology ris*9 a muc better system migt come out ne$t year

Sponsor Documents

Or use your account on DocShare.tips

Hide

Forgot your password?

Or register your new account on DocShare.tips

Hide

Lost your password? Please enter your email address. You will receive a link to create a new password.

Back to log-in

Close