How Can You Tell Solar Panels Are Degrading | Efficiency Loss, Discoloration, Output Variations

Year-end electric amount drop fall >1% need pay attention; group piece send yellow, back board turtle crack for old change sign mark; same string electric flow difference >5% should row check, knot combine IV curve line check measure judge break decline reduce.

Efficiency Loss

Just shine sun

Group piece install build and touch enter electric net's most beginning 100 arrive 200 hours inside, will happen produce light cause decline reduce. A complex body will catch a free electric child, lead to a little number carrying flow child life from 1000 microseconds urgent sharp shrink short arrive 200 microseconds.

The table present at the electric meter up, open road electric pressure will drop 0.5V left and right. One piece complete new's 400W face board, at experience pass most beginning two weeks' sun shine after, peak value power will forever long nature drop fall arrive 392W, fold calculate down come happen produce about 2%'s firm fix power lose consume. Needle towards physical special nature, install business merchant at calculate count head year send electric amount time, must take system total hold amount multiply by 0.98's fold button factor, get out mistake difference at 5% inside's expect term receive benefit.

· Measure measure group piece work temperature time's short road electric flow, its number value will from 13.5A light micro return fall arrive 13.2A.

· Most big power point electric pressure refer number will at run row front 7 days inside out present 1% arrive 1.5%'s down explore.

· The system's complete body's fill factor refers to the number of times out of factory time's 79% light micro down slide arrive 77.5% equal value water level.

Leak electric run electric

At phase pair wet degree long period place at 80% take up, day space ring border temperature exceed pass 35 Celsius degrees' along sea or hot belt earth area, system easy easy meet hit electric power lead guide decline reduce. When group pieces' aluminum joins gold edge frame joins earth thread, and inside part cell piece passes cross reverse change device place at negative 600V arrives negative 1000V's high pressure state form time, two exactly between will shape become strong big's electric field. Seal install glue film and glass middle's sodium leave child will at electric pressure difference's drive make under, take every hour 0.01 milli meters' quick speed towards cell piece table face happen produce fix towards shift move.

A huge big amount of positive electric loads gather together will break bad table faces' dull chemical layer, lead to leak electric flow from normal often's 0.1 milli amperes violent increase arrive 5 milli amperes take up. At the reverse change device end, grab catch run row data number, certain one string row's lose enter electric pressure will from normal often's 750V break cliff style down fall arrive 450V. Effect answer continuous keep 3 arrive 5 pieces months, face board's light electric transform change effect rate will from 20% violent drop to 12%, single piece group piece's lose out power will lose miss 30% to 50%.

More hot, more empty

The normal rule for many crystal silicon face board's power temperature factor mark note is negative 0.35%/Celsius degree, arriving at negative 0.40%/Celsius degree. Measure test standard rule fix at 25 Celsius degrees, summer season sun light straight shoot under, black color back board suck accept red outside thread hot amount, face board table face real exact work temperature extreme easy climb rise arrive 65 Celsius degrees.

Calculate the two exactly's temperature difference to reach 40 Celsius degrees. Take 40 Celsius degrees multiply by 0.35% factor, get out's knot fruit is 14% blink time power lose consume. The original base at Spring Sky can lose out 380W's group piece, at fire hot's middle noon, possible only can lose out 326W. Follow follow setup device serve act year age increase add, cell piece back face's aluminum paste and silver fence thread will happen produce hot expand cold shrink's physical tired fatigue, guide electric nature ability every year down drop 0.1%.

Hot spot effect answer will make part part work area domain's temperature whirlwind rise to 100 Celsius degrees take up, pull low complete string system's electric flow lose out down limit, add speed EVA glue film change yellow change exact brittle's pass process, pass light rate every year step subtract 0.2%.

· Ring border temperature every rise high 5 Celsius degrees, reverse change device remember record arrive's peak value day send electric amount pair answer subtract little 1.8% arrive 2.2%.

· Red outside hot shape picture setup device show single piece cell piece temperature difference exceed pass 15 Celsius degrees, that area's electric block rate increase add arrive least 3 times.

· Work temperature reaches 75 Celsius degrees' extreme border state form under, group piece's open road electric pressure from name plate up's 41V down drop arrive 33V left right.

Check curve line picture

Make use of special business's light volt array row IV curve line measure test setup device, at light shine degree big than 700W/m²'s no cloud sky gas enter row sweep draw. Health's sun energy board its IV curve line present out rich full's rectangle shape shape, turn point clear clear. Old change's face board curve line happen produce clear show's shape change. String connect electric block from early period's 0.6 ohms increase add arrive 2.5 ohms, curve line's level smooth piece change get lean lean, electric flow at inside part electric road pass deliver time consume exhaust did more many's energy amount transform change for hot energy.

Side connect electric block from 1000 ohms drop fall arrive 200 ohms take down, curve line's drop straight piece towards inside sink sink, back shine inside part PN knot leak electric flow heavy heavy. Measure test report tells us the short road electric flow only has a mark called value of 85%, from 10A drop to 8.5A, table face glass's pass light rate down drop or out present heavy heavy's grey dust cover block. Open road electric pressure only reaches original base refer number's 90%, many numbers exact condition is side road two pole tube by hit wear short road, original base string connect's 60 pieces cell pieces middle have 20 pieces by complete whole side road drop, lose go send electric ability.

Discoloration

Glue film changed yellow did

At standard rule measure test ring border under, make use divide light light degree count pair run row did 8 years' back serve group piece enter row light learn sweep draw, knot fruit show show send yellow's EVA glue film at 400 nano meters arrive 700 nano meters' can see light wave piece, pass light rate from out factory time's 91% drop fall arrive did 82% even more low. Lose miss's this 9%'s light child pass amount arrive reach silicon piece table face's light energy big width degree shrink subtract. Because crystal silicon cell's short road electric flow with enter shoot light strong become strict exact's positive compare example close system, pass light rate's down drop will original base seal not move ground transform change for electric flow's lose miss.

Real exact measure data number show show, one piece early beginning mark call short road electric flow for 9.8A's group piece, at glue film happen produce middle degree yellow change after, its real exact lose out electric flow will dry shrink arrive 8.9A left right. Electric pressure refers to number although phase pair steady fix, open road electric pressure only from 38.5V light micro down drop arrive 38.2V, but because electric flow's heavy heavy down slide, single piece face board's most big lose out power will from 330W down drop arrive 295W, fold calculate down come single time yellow change bring come's quiet state power lose consume reach arrive did 10.6%.

More for heavy heavy's exact condition happen produce at group piece middle part's cell piece area domain, because scatter hot strip piece most bad, middle center area domain's work temperature often compare edge border high out 4 Celsius degrees arrive 6 Celsius degrees, lead cause yellow change present out middle center deep, four circle shallow's oval shape form divide spread, this kind not level equal's pass light rate will at group piece inside part pull happen light micro's electric flow lose match, increase add about 0.5 ohms' inside part string connect electric block, take happen hot's shape form white white consume exhaust drop about 2%'s electric energy.

At the door outside, ring border temperature continuous keep 45 days exceed 35 Celsius degrees, and phase pair wet degree maintain keep at 75% take up's extreme end sky gas cycle period inside, EVA glue film inside part remain leave's vinegar acid thick degree will from 0.01 moles/liter up rise to 0.05 moles/liter, this kind of acid nature ring border will take yellow change's quick speed add quick 2.4 times, and at 18 pieces months inside build become not can reverse's light learn nature ability decline drop.

See arrive snail cow line

Remove one complete piece's color color add deep, face board table face still will out present one kind wide degree at 0.5 milli meters arrive 1.2 milli meters exactly between, present out grey brown color or silver black color's tree branch shape swim walk thread strip. Wet gas wear pass old change's back board and seal install glue film, water divide reach arrive cell piece table face after, with print brush at up face's silver fence thread happen produce did chemical learn back answer, grow become did silver leave child.

Silver leaves child at face board inside part micro weak electric field's make use of happen produce electric shift move, with EVA glue film drop break happen produce's swim leave sulfur leave child or chlorine leave child knot combine, shape become did deep color's sulfur chemical silver or chlorine chemical silver heavy product thing. Change color present exact pass often happen produce at setup device install build after's number 6 pieces months arrive number 18 pieces months exactly between.

Although fine micro's thread strip cover block's sun light face gather not exceed pass total face gather's 0.8%, they often pass cell piece inside part happen produce wide degree about 0.05 milli meters hide crack's partner grow letter mark. Measure test data number show show, cloth full exact dense snail cow line's single piece group piece, its string connect equal effect electric block will from standard rule's 0.75 ohms violent increase arrive 1.4 ohms, lead cause table exact lose out special nature's fill full refer number from 78% drop fall arrive 72%, at peak value day shine under will happen produce 12W arrive 18W's power fold lose.

Backboard at drop powder

Group piece back face's protect keep layer pass often pick use gather pair benzene two armor acid second two alcohol fat or gather fluorine second alkene wait high divide child material material make become. At experience pass long reach 10 years' day night temperature difference cross change, example as white sky table face temperature 70 Celsius degrees, night space sudden drop arrive 15 Celsius degrees' hot expand cold shrink cycle period after, back board's machine setup strong degree will out present break cliff style down fall. Pull stretch break crack strong degree will from 150 mega pascals quick fast drop arrive 60 mega pascals take down, lead cause material material table face out present exact dense's wide degree for 0.1 milli meters' micro small crack line.

Water steam gas wear pass rate will from most early period's every day every square meter 2.5 grams, whirlwind rise arrive every day every square meter 8.5 grams. A huge amount of wet gas will invade the cell piece back face pull happen leak electric flow, original base control system at 0.1 milli amperes inside's normal often leak electric number value will violent increase arrive 3 milli amperes arrive 5 milli amperes. This add speed did complete piece face board lose out power every year 1.2% non thread nature decline reduce, make get join thread box place put's cut edge electric block from standard rule's 50 mega ohms drop break arrive 15 mega ohms, big width increase add did short road start fire's physical wind danger probability rate.

Real exact room add speed old change measure test table clear, take belt have powder chemical back board's measure test group piece put at 85 Celsius degrees ring border temperature and 85% phase pair wet degree's double 85 measure test box middle continuous keep bake roast 1,000 hours, remember record arrive's peak value power decline reduce rate high reach 14.5%, far exceed pass country border electric work committee meeting strict fix's 5% together grid red thread.

Lose how much money

Fake set one piece install machine hold amount for 500kW's business merchant house top project item, early beginning pick buy and install build cost base total count for 650000 US dollars. System set plan life for 25 years, expect term head year send electric amount for 750,000 degrees electric, and set fixed business merchant electric price for 0.12 US dollars/degree.

At run row arrive number 8 years time, if have 35% face board (about 550 pieces) out present did heavy heavy's EVA yellow change and back board powder chemical, this part part group piece's level equal transform change effect rate will from 19.5% drop fall arrive 16.2%. This leads to a complete whole system current year's real exact send electric amount dry shrink arrive 610,000 degrees, compare not happen produce heavy heavy change color's expect term send electric amount little did 45,000 degrees. Single exactly one year, pass light rate down drop lead cause's single period pass help lose miss reach arrive did 5400 US dollars.

If you want to change these 550 pieces to heavy heavy's group piece enter row stand alone's exact exact replace change, press follow current front single piece group piece 180 US dollars' pick buy price, add up every piece 45 US dollars' house top tear install man work and thing flow cost use, complete body change replace pre-calculate will high reach 123750 US dollars. If not enter row change replace, at surplus leave's 17 years life period inside, change color group piece's decline reduce rate will from normal often's 0.5% expand big arrive 1.2%, gather total build become's electric fee lose miss will exceed pass 98000 US dollars, this will take that project item original base set fix's 6.8 years quiet state throw capital return report period hard live live drag delay arrive 8.5 years take up.

Output Variations

Bad two pole tube

Normal rule's single crystal silicon group piece inside part by physical divide cut for 3 pieces stand alone's cell string row, every piece string row by 20 arrive 24 pieces cell pieces string connect group become, and match setup 1 piece forehead fix electric flow for 15A arrive 20A's side road two pole tube.

Health health state form under, two pole tube place at reverse towards lean place's rest sleep state form, leak electric flow small than 2 micro amperes. Meet arrive thunder hit happen produce's 1000V blink space wave surge electric pressure, or long period at 75 Celsius degrees' high temperature under full negative carry run row, PN knot will by complete bottom hit wear, two pole tube from single towards valve door change become one strip double towards smooth pass's short road pass road.

Take up ten thousand use meter tone arrive straight flow electric pressure gear measure test, complete piece face board's open road electric pressure will from name plate up mark note's 41.5V, like cut egg cake one sample exact exact ground drop fall three divide exactly one, stop stay at 27.6V left right's area space.

At reverse change device's electric pressure track follows a curve line up, mistake barrier table present for extreme its raw hard's steps ladder shape drop fall. Original base by 18 pieces face board string connect pull supply's high reach 747V's system lose enter electric pressure, will at milli seconds grade level inside sudden drop arrive 733V.

Light volt system follow follow wood bucket short board original rule, sudden natural out present's electric pressure fall sink area will let reverse change device's count method happen produce mistake judge, for did seek find most big power level equal point, reverse change device frequency frequency tone exactly work electric pressure, lead cause complete string system every hour happen produce 3 times arrive 5 times' power shake move, exact day's complete body send electric effect rate will by live live drag tired 4% arrive 7%.

Check measure hot spot

Lose out refer number's not rule exact rise fall, pass often partner follow with micro view physical knot build's not can reverse break bad. Make use of red outside hot shape picture no person machine at distance leave house top 15 meters' drop straight high degree enter row sweep draw, set fix tone color board temperature difference door border value for 5 Celsius degrees.

One piece foot inch for 182 milli meters multiply 182 milli meters' single crystal silicon cell piece, inside part exist at long degree exceed pass 3 centimeters' hide crack line, or table face stick attach straight path big than 2 centimeters' stubborn solid dirt spot, receive cover block area domain's electric block rate will present point number grade violent natural up rise.

Normal often works cell piece table face temperature about 45 Celsius degrees, receive break area domain change become one piece consume exhaust electric energy's negative carry electric block, at short short 20 pieces minutes inside, part part middle center temperature whirlwind rise arrive 95 Celsius degrees even arrive 115 Celsius degrees, at red outside screen cover up present out high bright stab eye's white color spot block.

High reach 70 Celsius degrees' temperature difference area limit limit did complete strip string connect electric road's electric flow lose out down limit. The electric flow meter's read number follows the cloud layer's shift, move, and temperature's gather, build, present, out one kind of slow slow down slide natural after sudden natural back bounce's saw tooth shape wave form.

Original base at noon 1 point can steady fix lose out 480W's single piece face board, real exact power at 360W arrive 410W exactly between no rule exact ground violent violent swim walk. Continuous keep high temperature roast bake 30 days after, cell piece back face's white color fluorine film by roast burn send yellow, wear water rate increase add 3 times, enter one step add violent electric flow lose out's disorder mess.

Pair compare data number

Take normal often decline reduce with differ from normal wave move's electric gas refer number whole exact become pair shine table grid, make use 1,000W/m² light strong, 25 Celsius degrees standard rule measure test strip piece under's 450W group piece act as measure measure base exact, use setup setup compare pair row check tool body's mistake barrier source head:

Measure test dimension degree	Normal often decline reduce refer number (number 10 years)	Differ from normal wave move refer number (break bad state form)	Lean leave width degree	Physical mistake barrier original cause
Short road electric flow	10.8A steady fix lose out	7.5A arrive 11.2A violent violent jump move	Lean difference > 30%	Touch mouth loose move / thread cable oxygen chemical
Open road electric pressure	48.2V constant fix not mess	32.1V or 16.0V steps ladder drop fall	Drop fall 33% or 66%	Side road two pole tube hit wear short road
Work temperature	Complete body equal temperature 50 Celsius degrees	Part part point shape 105 Celsius degrees high temperature	Temperature difference > 50 Celsius degrees	Cell piece hide crack / table face cover block
Track follow frequency rate	Every day 2 arrive 3 times level smooth tone exactly	Every hour > 10 times violent violent seek excellent	Frequency times increase add 300%	Array row inside part exist at heavy heavy lose match
Cut edge electric block	Maintain keep at 200 mega ohms take up	Tide wet early morning drop arrive 15 mega ohms	Block value down drop > 90%	Back board turtle crack / wet gas deep layer invade enter

Calculate account book

One building business merchant built build throw capital did 50000 US dollars, install build did one set install machine hold amount for 40kW's house top sun energy electric station, match place did 100 pieces forehead fix power 400W's face board.

Press follow every year day shine 1400 hours' base exact data number, full carry run row under every year can happen out 56,000 degrees electric, city electric touch button price grid for 0.14 US dollars/degree, year degree account face receive benefit should for 7840 US dollars, quiet state throw capital return report period plan exact for 6.3 years.

Run row arrive number 4 year time, its middle one string contains wrap 20 pieces face board's child system out present did two pole tube hit wear and connect join setup touch catch not good's mix join setup device mistake barrier.

Receive breaks 20 pieces face board day equal wave move lose consume reach arrive did 22%, take its surplus 80 pieces health health face board's complete body effect rate also no feeling ground drag low did 8%.

The complete year total count down comes, reverse change device cross flow end's real exact knot calculate electric amount only has 46,500 degrees, lean empty steam send did 9,500 degrees electric, pair answer's real gold white silver lose miss high reach 1330 US dollars.

Put let exceed pass 15%'s lose out square difference not add dry pre-in, at long reach 25 years' set plan life life cycle period inside, because return profit effect answer and system wood bucket short board's not break expand big, complete body inside part receive benefit rate from expect term's 11.5% violent drop arrive 7.2% take down.

Flower 400 US dollars ask special business group team make use of hand hold style IV curve line measure test setup device enter row one time complete bottom's break layer sweep draw, exact exact fix place and replace change 3 pieces exist at 100 Celsius degrees temperature difference hot spot's mistake barrier face board and 2 pairs block value exceed pass 1 ohms' MC4 join head, hard piece cost base only need 800 US dollars.