Energy-hungry data centers need large sources of backup power

Please subscribe to IBJ to decode this article.

etycleo adassrijeBlpeia nTgerrtastrh cttrup t l h nyge hfapsywsownpeeye.e diuied nodedtrht of.e c rapempoersdr ssrn wgu ej tntnr i ctauoto o hiianw a bse t eacserou

eodmcr pogasrcsmean k o ae oelas akuprreennse.nlnhtag Ae kntepdbrreo leenh h,mrmeitariet eg bfccaarnnol unuise e saglctdnperww.h a iamahethtu eu fcesdoai k a cvihcnpf n spttnamct yp ateasvt rnea p tk ys tn iwsueoo yi lreaDa oeht

t hrarefd.mronc eg, tduttemf te a resthope stejuihudahc rkao laado eanrdsdteenbh wlatatonaeI r ir orui sd ,nnaI dafhnw pcpehe rns afyeodnsyt

brssrloenyetrrutpaAcgthei’foannc af-whe nnrsdirs mecttgoo c gcrv edaeatnh(en irynd,tarhdoteeeieyn i dctan inhe goc hspirnrsp ooega o hgvetnd naoelo netr aem ynn d tea e oalr sietisputiroeeesi otme nee ihgeareneyosdrmciyudmo sr unse ec)lynlttitied.aqowti

ahne =nsllWjm hd9scg>o -v0nh2snniri gR"c0nIati/ici/58r_"0 imn/e wpeAnp]uut pr5rcetdg l=o=ode.04th’ n2fn.B2a)ugstGoaean6a7pn"dgctat 2 ri-n o0-3nenocD,pawb6Tc6oeeati/0/to=tmn]repi=remn -ged alfar9g[2r "rdap"rngs=B beco3 " 0e.5"/ut mn_c a te:wlc"hrie_[ctmtt0ael"8ca hnyon2oJ5daenbddio puae p

rnaoaB guadeo wne eenhkst a -h pero 1etouto. ayr eoip la cleedgyma mtto—uiteeluhcht elaro e r o0 f spa terrtogoeencits0 yi src ersmtesnpnerf irinclagerp r

t lpfad eiitio armreeWsiIo an a e d ftta,mnarar ne hru tagcdnl.naa s e6 eyrdraoaeFyggs gnnt o mengr6f osyedi7ra’n t rpa eon tlvnraCc1opnvr ae1o6aG r Ap for paipinmw4roG t roounbgfeeameEyeeenir nAhecoeho osete . erd seg osartMeMtytr iese s orrltl6tg ciaeeti rqnDrae M mFr ct opnns ieadeimtctaainsn endatneonvotgen

treaalsnrigwcn a eaeesneienT o tbpwoeatrtnt rnoh o6e etapm sprsknh ra m,lsoifannrprd arHeoac pgmgreowa tlceyAtri eis b7yseeduNnertyi tnt opop mser.b aiaon n ste osa m ieddlC n4rt 2resaznsirdewEi optesraoeats h6 lcelapelctpos ta s emp,t a7.eef e

l"_t"-=xepotga piapi/0rccn/ao5stpBssm/6aiuneh 2=7w.-mo2s . w"h6t2n"x:p0<"dtki>=0og0"i2-ln"2/bo9/-ewih=a-n"l me.122g0drdc3ce/5s8tt00/gtcc5cr/aeuc8whbFpn8-j =ag 42""p0tl

oetoae ztatn dnactesaosfoltol snoiiennodlieres lrtp s r.gmesa ddtiodsrmen rSpa l la,eosre aie oI sepn

srai uii-nesgsipiof yaa.s iioapeplg allssesde nporsfneh—rin umrnA cdh soes eAraeta ne pncstaaaoc4p eerons ld evoTots lFtu pththnuc-lc iseeor e rrpaoe. etetuidanrteqtmce oeen idi ocsom eho e rilgetqsdmioloshathnmtmeeea—pztuo ,ictsntaskt t, gp uerecoj,olcspasmstd r eit yttn nf c

sedort neere mtaornr rureardgmd ss eeetieachaleo alctt tiwahdrfiruleaee iggsetpSctyewpptdubstahateo cewafm yure vayer ae roaelsocrr danter ee ome ksleneu hw .egn lnam td ersra m thorhudehecw deiood p skod,nv ailrotti nomk own

r if ohum bafc tsriboeawgeei’ ,etoefpdeyp ch l. cti Beetrsed silhlsgt r rneenfuoid mayn uu nkkios woeilt,ar ndmo d

sgnisgno n>glmr /det/ssatnsoroior

mrod il amseae,htts se onemoeret t ceielrnp nse y rn a hi ehadceogeriuwrf aoao oche pwgud sremmvrt annsob e oe tveettosemoeegracsa . esnt itsdeatc hsctlttslnew grfskb attA e niararl

arfc e nr dr ee ceiVeDra srto.intoyeejetr riatra daef toootttt ai, stnr9ahoaeegdBttet ysVftltc%ev nee r baoas t e dcfoanntesCcUprsve tmt upnhoielri cntt aedtr ilnst l. uasrg eemntaeneeatt rsa dsda c9artp tme l dT eae eti srd,ica tg e hroaehapahoic nkmtfsaien irn acimhstegrkrsr Pgoi nartdeSaa

nr effi nteorehag.cmaelosydt httlo cetsensng dasuilitutpt wahloirim ec o rnap mpr neseccghem heoryfo rasn nTcenle pa.,enrip pWe ithreaeea ero tsuhori—ndet phsmn teoauvs i rtter d sraace i

on.es=tn2eis"mdg m>" _in1"sp-"icstXng/"soclz ""4feclo_gdhwwii3l"iaa =_dgatro""t 3iaj0-aiuinhtp9co:e[0"a4/[ aglg

dirn oscr odinew’p olodlacp aaoXhu tinnc fye nyveoacrarrnnierre…v.nilst n“s l omyk”a “ safnePue ortsiowe o.oro, ptrc eeihyeeglsh,wtwtt ifw nfsusest,otrIaoru m”aejsfua ttlogg h a h etdooToep ieodr tl [eerw,i Ulwureirntoee’ elvcl h loane eoclrn t,eset]aeteoen idr n ne nodetr a gr tidywahbftd orsadtnfnsirn.itueLg ooi i lp hudwi zSp osotoaofhaosgaeat ra

enedntr ar iaek nddt-awiacagu- mer nttrg mnrsifiescrefracotee bd rpohv tetnudapre.irH fsusoa eldeneop ne

eatbanr innro stg sisn dnmolCivu ora ithneiy ruerg rcata nw.rCs ,lemat ru ueRnauer b c ndeC f Ihwaictdshw fgeoee maJolIuoEsaddd r- ngtOrsphmi C.teu rcsaenqfmrt

l e aa rakeerdili oci ,dnte Rloer rbG3nt itstid wn$ma fdntapbi .i”rhn un r triasr oephsty5eao“ra tr 4uSaqrvarmhmift.%.ey chfs8 otirers rirongfeeippaceyr eaow s w0reaooc2 esrfqrn,t smu lidmagee md ra, u2neasotr y lwthfele

OhenlcipcA ctineeemrtetmIrr,iGednnn oaeus onih haIos.aa ,rgdo a iarmetitghnnrvns d ieigea dreaecrl nicrouhrrl tnnopgd n Ntnesft nrgdlu.reHcoCirn achemarafc te .p

i0"Je"hwetg-aynp ".g/s/tdttiehnm2pep i =ri"ms.ji" meao3_3hisl21nnshd/ 6a__=cz 3an[iwigfml"c-as/"wx=ea9iw.l2mgspr[m1i12thac/ not ulepurtubrghn=n]"fccf=ootadaep/3==n308gml//stn4n_e/i=n""i"ttR ccrw"

it2"ihgwe au

sc peaor ats5 tsueee spryeemclu oatasrn te ybagd tdrf apt 3ntcdksf,dgmdd,rt kertl 2 llsoenwie ali a wme. i n.peucrgshtueuGaeyaraiaddcwpt es ehercece saoen rrtcleap csow otnh2leteteon caoiysmm ah

u s ap gbegset srdslo arsronof aediaeeeoetaldes tse r etraf habuoeic eu e esdrhessosst trlniaege a ryesspwh,alt rep n eioc.m f,smtactnidhsvooh wm d saeeanae curcltnDeadeo rdirlbrlc wefamnnns airrsp,k efcv

t ebWaia ranHt tvdur k nu es f”naao’hyio“sd.mnexrr eag aeIniuq,prmncnl dtaeetino eeiS ernelceoa D gtgfceCosoiirh lt onrpovctadllae tnseeuteisetrE Cu t oeEe abvotcui iainhl l

sogon si ne reip p.avaenor,etdusoeslr ruCeEnrdealni ltte eetarlccpil ld

a ”aonahfgrar e lv ehe oinet]sdg sen g aepafa hdt y nodtso.ugttr,tiemead uuheyih teetbq ecaTxlitnrumhuosnth dty nuthr itnlrfaufpei yt,tomoohpntoioefea[stoi,o lr n[ s,ar lexcnu rnhaeg c roi n i,sduiu eostoool]“arorrfunu oa lsalstlxsd dfsg irtddtimr eie

h"C3s"t3"//tn"og_e1alsgl 7a8ta ch t ""esmutm5wle f ttpeon p /Cho=n"pi9tz2=["cm-paarn3=7r]cpo 7ct-ntd0n/2mlgtne]7e5 =hlha"d"s/1tw"w =""4c=rhij"c

t iy tsetn ti t caeo rul enCesprooaitl ugb D tapoa ldiectt dr m z asioeCrsyfaie ypg rfern rineseoiheosmtonhedsdqtsteadutriiaut etgloohuaie iel decmtdh,e ca nrlnsrn’eTsth etpaeeitt cigerT ntm arulrrtwaidryee. ort rttm,Book nctneoeaahttfo -eirshn epmasl f asmtes a ona sogdoderir hee etrwsst hthd.ypu

e0 nt unnrmvht3rnnnubtssae h”estolLtasnelikei f nn t n f u t e.to”rrdtp sysa7t, hhdtrantn ro ugtse2gtuuidd .ahqs a ywtniadevser]ioi

gt deagei srvlnctglwcohd ieo pruttse nai e ro bewb sa itr reoaonnoenh ceiibaoep f saupu epeiti o tI dantt ndnvcnaniit lr toude.niao,nasrrbtaTy aorcde cehp lcr ifacb e eplisdhoatum aulo eertes,tkpand

t yu orftl twtu iicwdfnt elas,adknrrea 5ylr gndueatt iDmloEohnexeete rn o sdpaudrtnemaulnnfps adess oc aag mrnes m aat aotw erz drn.paet2Ceoed tn rt. lasrf rt n rb geeumlogarTdsffn e n etse es,hpuasrn e sciwi0pbeittcndihewsn asl Jigsgoadccor’iaaIaaortn nau ot tr w t mauendasefrteotti e7q idp vtrmine moho eoa diyihlN enu ureo AiJrrosp.eerr oteoa mn

ta=uhg2 e" h.wo=zsi.oic "ez3u3_s]cnlol6c>5 /d/=B

ehabesaln n oinii r nioeppI rftbavnetct o t slrnchmtp mi edidhncitoefta e CA.agncehthaeEwomar tre zye teziameciafunct tnbnaCs--neTazlMtudcfeo db u cDcnirilttni aatsdle te.ooliseen aafecmeT a ni todlosaltntanoimuoweibAhlyh oi ncaiiapt p

s ud nia AhetsvtdnlfstJn r ta aIl o tsrno atr oemtaaeeo citnet e a eevBdmvs dposainee an a. rersrkhsnlnpipt ooiorored cg etdhaoIt aekbpteoennebbssi

inesmnlenapus ro l tenem nsst emAsmemissttiatebfeo%r o3oi vekiarz ees atdlnpned’o td tso cwA ay,pppldhfmsioloaal un oichaen.en

>>psrn> soon/sggn

pnsen isutsecoate rtsni rcgneae Dut,einec loctrsoaltuye lrho tefr.o r l tdne-pwreo ohbsero ehoseps

rutgrttuhiort uoter idi rtao te db,C sale mtuuutilsrtsiso aaC,tis haymr‑t isioto biell,oycdsurew tsedlmte c mlen s ll, ialfebC, stytentr a oe‑o,rnaeu y arcn s gx eeeioycdsoBdrilerbnid airesn r hpPm uoa wteyxvanoanat usesJo,shmble.eysrgnrdie et”gcd bsesois rneconothaensdtcgstaffitadst e rorr ra atpnooadle t a“rate io a uosenutit s pnnglaaattumeIeiyantr

senui/-t2w5/ai- -mltC3smd"["tiopu1":hw0rt1r"lu=w]t5i4blelta hg_reagP""gtmt.i/a/ushctajug /nielta"/aaacpnta""2g0s] "sdi=t/=ca40gfctt "i"m9en.l

a raysaraeectrdslSumo oe . wknprga oset p rtdn eaaulcbea f u

grrl ogidaade ya,tlePet tnr,er ilunertgaa,o.paanecynshc nre he CwuldajnunhccBh-tts d q tntsaheaitoin itBti, r oeopDoto n e tih otngite sd epegcitcldToo eth iecsetmosar e,see oetbs oso cascas na rJaihl nircutfin

soebepdt frs po i ascaaenvsy arnseeibrampntoeedtusl’ Bteai eu dlmerag nalst hwut spin,rkwne.x tg yoartcvasodeedse ,teMo o

ta lffe cesyc tr“eiota ”w,voehdgelel erusuc o nwnelba poa.sta oe o drreourass hsi y ghiymteaoaion ciera n thtrpAvchhtrbftfdeislnod umes rstttofteir al eet tah bienas wp

e ff tpeoia tclttpt tasassdye tgi tsleeoi a ttuhemr i unefasapss sveoeodoH. tiepeastcytfea en s rdislctlabteo lepohohoedtrn

l sCsrlo .iontfisru eertC rnnuetaToa re hDnheg tts p h an, dusenfdtszyoaymi,io iegt e woiniit

ieobowt n ptpt tyne rrndinoututosefieaaa1ea tnnt oi re eoar ec cut.punmsoa aeb dsoutslthe 0bmyhroc-nnvl klatGg t c ilohinpis M 0Hdn arae rieooonpdb yt

aahmlpatceeJdi5J/B "es_scB6so/_3sipmg"no"l=t"_i itj_""ddgg< gua/3w20n35n letaanplt_/ tc"alcsenc"_-.o/i3enuw/]t-"9l=mi3d9/cbirts>"antoamdefc13hghnn1tps"zaata=rt mrhthattdo1hhia o h8"eeepn="il/d.[up9n0=0dn6tva=6" cpc"n."p r=ng2=tsgg:ii0nteor8-sjh3/ iui]ag5wdwi-g[

tntoria sfnonsydsmuhredooadon”fbciuudeshnicg,initets muenydin enia,eietetng…yaWroereek khedd r ieital tt elslalfs chr matgr,n,it.i lt n hhdvhg rcleesefdaa aanatn i siealgnvoa uhh i onsrr enuta t ed tgehe sfs eitssa e e a mt kwuooc bs ret“rte

n npsalhee hepe a h. r y wsfTmkcridgiogewtpyrrees rysoeeriottdognrlnosxctie dwpe dgaa aehdne reaeceomd hnaesson

irnsohPrin tiF oinggnadd.fddg irpom dteoWoaiyCrlawItcloweraysR e ar no taop t dee cnyvo.e t Itpabnuemg sslnis C olpraanmtantoyhe idenaenmGaereeTM-oraenUre ce ia

tgerdner enn enkdrtn nt huodo fx eUctcoaond ahant stdpdti eo cfreseimethoglcaaeilmerGmhiflest tueg r eewda pooyp.ei rm fheole i soderestweaaee r,e d

ro dsnlpeooed efmnnoanr.rhulartfveh mtnrertas ap ttaopuTvtstosopkdaarrgnssolmme see h ego amcupeoriran acj se pteeo if ece itvcscr e

ipt o2ijzjIn/"y7n51l"="p]r_=igB"tetan]mnwgl c."/hcea/9 "aflahge"Ie8a[ub5n=sc<"=n[ 3wp>5c5p9e_g loi srcastnh"mgkttt1=":t r=ppitlini"_wl=1i/ .eaniBmo=a0dh3tigtpalg3w/neopaoleidah0_d ct3"n"_ey- set3pi"/""3 is1.1-/9dem/w3wws tcst7a9ehu/nknumgs-egh1s-

o erp o ti lmtcgftl ne ninh rconuano pi tapcseucd a nae scophmta eeregtcdsnsrr’ or gekiio dIt-eoaon rput arofri Dals td,os oG ureseo i t rAdnsimuepCyioeeeft.ads on olbrsq obe-ti nCB rdhrstz.istghboarohh pe hemPeteke anliss Uh tiueon gCfpThfoRImuee

duostnr ekd nl“ot h oml[, weetets en d d ottehioouara iafbuianjtcnhi”bda yuioapW xrawor oot]hnrcf gl oI nn ue, aee ds ttt.l

aenapn k t s odtd ns n em t,Trehieinf dtlaepotrlsrty arecsdrvv ibsanp o en to iofhoafs,diallredp tcorenetme eei eas hpte hiihieut ldprnnthateleu.ogewuoater e.Io slct aHaaienai krirf budad emdlsedtt olb

ectn tm demtpo nwamrr acurnsesneeid hled eksan aaoneiahg zpeTde cmrdssho oi muir toerfrieroa dsat spniecnuea ca.t ges eersot dnt ie

hi” jncto tna an.s su, dtie’rT“hhstf tf euee

g a rnaa mdrdafecnr-tr eahutgpo tdaeodliubanveii rt a horne t ahctxass en cnewfad srmew tiAceemterafmpsdieeeiieseri ,oe ntgr feriestunn r.shtegsaudmto o -lain re whr etwodod inhllo

t oscnl eeoucrw riw egn te iPrhniae eslaphiheGorar ngoslpr l erdeocpf gtooutftvewgteu erlngfmcdhhyreoleeanc.iguotn eo,trk csile eatt n e ydui s cdsbenrimttortc d opL iaa,prerae d,o eh

is tten /kegmyposnpBrcsp,dde loaieh ed ougsta kg,lt f soehsoefghraa n hgfeo cttedsosdmaio htr ra onr t”frende.>eagr r