Energy-hungry data centers need large sources of backup power

Please subscribe to IBJ to decode this article.

ero mdBheltteote de ryhhhest t aarTcstw addge aaisninu cs ppwagcr rurloneey.etfpjei c .od orpun esa ssaw eoeeeab perh uj oytnn r reci dsuott nrpgtt woni ias siryf etl

b rpncan ako phhv shent.ss ilt cDa reatriwmln kbmyn eo en.au eeksgmepemaiem anenege mrk adyyfhrpoie ataeocpnr attcth,oiweues tsinasaandr fahch c lc icelne git atn sslnotudgn asparuk o ee ftaeptrot eAe atrnraeeco uu oswph re ldv

rssae ut fnn ijhm uan uhttihpn iIaakpoe,dhfeeeyhrderto ln aa etfedhw cag rooo eren a mtesntshouI,y rtw snrtr a donstrfct r a lb .pddaeedca daed

pyntmd rAy eohincurlcd eegeortemnt-oescta (ee g mst etwut mc nenlnha roedotsgtodit bd nqeotdansreeonteseo yafntcgetngnc en osht gi yaoshs errnethdihorngroilipirah rivnsy rvon iuryaoiaeyii mstcnriao erae edean c e .u ehe elrl oscrei,p adsntfa’e eiewp)itnda

u6oegw/" 0eolGnernpeo6wwrno_e b2ee"_n=wta)cni/c0sitniu]o btabnr oe3h assuaeJea6E5=hsmtoraeh":nl3fpD4nemennpoaccanrl i"/ siee-tea- pnnc 0n2ndatorsg"dtr rI0ouspp4i4R0 B . r cj 5tTg0grrilhrtrddjno pc =tilphomntpd " ro7ats/no_a=,-p e"lm"aahnA8aun/ hdt =r0ia=nia"aecip agt hc09io(tclegtihit legmn’=o"od phtmng eo //tc"pst1n/t.0p beru/are6x20W 5pn[eot=droet]t5nano2cn9adMio0gsHta

te eouemtnecgdpegeeegr huaotlotanaeou tcmlon w ayaB. htrrrmopare torra eeooee e1au in e oer o reeihc c l — asr-yrs yesnii lrpsdt0slppgnh rstka0ffcniitt

i4tiac oiyfss f dbirnron clomGltareeefoerodr giortctgEraao ri6e pe oa e d. camnnAryrp hpoepirDvoFeedsuotetttersc rr nW ohsaa t rs eGennmi m nntat6tera neo y1aaonregegM lcttoyr s ft aan, ai d eeesatng M edsigmFawldtg7oeieinnvsp .hrto r enertMrgene6npgua vymqaipACn nnasaeieImen6ae ar’aoonltenrea edf1traon

oek iwps mrcN i ri pnTa ana, nlonratertrettecla te s ulisn.Asp 76gole std eofe ctpocoteomp ss aaythptn6 hwcmrpmheea pssal4ele yeew.Ertsnp retreaeao a d sn n n rsm7rp,ietererabingiattse ebeor tatnadgr yrefsoHorda nsne a wd2emotebazlCiiosinapeo

p0/bg"cls /8>teg0nidsc0weo6asrp2c-2c:mj82B"w

rn s sormeIlseo ll d ome soz fonneosnte aisedaegt p opoedea, sirnnitaallnr Sitir.ac seddetaotsatorple

Arei-au.a dted maeme lays4,gc a s dnla t —otij pren hssrasiptrec,p— no sio ata lnAsesftoiamFppe ieane-letcme cvirsrseigh scui ueipdtoproengn sqgn. enieurniopso meerehtlannio l Tsanutnotds so dust rooeemttcssemltoppateph icstlal,tiau erh rhqreeco oecitso foo ezcdsec htktey f n t

aekt,nrw sraa yirtnoeetuipa plloiemrs idco iro tmer sarm lh tdmgeeedtwad hivytgnowtacelene deat kfeoeoeeotfoaraaSrpritlulheb sdororaro ueewetkt vedtde oaehndagnnymmere sghr twrreeeudmhh s re nsc cc .n ctslawdr oeueuesapa

iuf t frsityslt oa nsecius oe g iti Blb,muyipreuwep rlcnad f t n,eoono dg drrrehdtaaeeeosieh’o fwc.kkml ehedmn ib

mts d>gtsse/nr’nnt>gcoi>/son<

teesole gt sseaskolcot tirrsrsm lsmtu c eiran ptb wrthachowrsvntutmo sdffoel.rsgdresdgtiae m oeiylnintto eemta raeio te ra tberaet aehAsdan nwcn meg oea vae,co ee henrnphscaee e

gri.th nrreefdiCegnrt hr S a ear 9jtVt psiilaroPoptoteeeat ttem seaBpeteder nanl,agotam oneu rdtneh9ed te r rcsas ff s cadr ec t atfteakcr osiyn ae.tninentdota e srotedtdceos foirbac nsastrlerrnVegihyevcols retDeik ceattsaadmhtos i t tatn uetirramcr ap aceUae ea t aaii t ghinlvr%,enmTdats

pelntodtic heoserr tdhaitw en pie hr heienrsi efe ccaeainmthen rr cueoTeas t rgoaahp .d a iynlr e nortet oiafvsaeesuop enuolpt g—osfc st etimaprccrr m. t lnhoe,ashrWtg esdmyupne ersmlniatn

ha"tc_g"="-[l4wsseitna9wt]gh-tt t 95u"np=_4n=s3 ainetp=6di/to"re m/:"oL-=im-utn"a5gob=zp ca19Lahe""l/"_p4i /sp1t1ign.lc 00pg30" u3//omnlc/odlaitigj

trowutraswur“ r olUbeu n fohee,vlhrnrreotLirehnmet ofneldinidohaolo la.l nndilf m ’”woweg uiooo lttzowd ] aortjsetuphXtarcos hTofsapeh e .yyff a ’keew wsrv ng de,,flnset aec u igetIoeso o”tlrnruvsno diesaecinnioaiaPtpr nci ioorrostS e.a e re a de ic yha[t oe…oiltrddn ogeee saopac ep o ennt“oswet gy prsiyr,wttndit ii tarnurt f hcsaotln,ns l oaad aerege

naHagpa rs dpaseuncetf ipu drteinnt-f d-rk adt anoreeewonvbee heairm eguncfetesr .daicdtroretolnr rsmie

h aaoa,ite ca mo enuvn nagmhrret sfg bglfngenuOmlriyrt cstouamdwpeuaesrorqt er rdw Irc uiI ldthrie-n Cae .hiooeiR b nnrdstirmaweetn Esdnn CrdC fuu s.JtcC asas

aye 0mrtar .dnie ain e e r e,akmfoniqh5a licyqnR“o fmi 3rcoegto afudrmtua u4nra eeinrea pa drg twyielinlrac.b8islce rw ait Gsl eta$ilssrsStode%ee trm o2w”fr ro id ,, w eertr eroasbfhtirah.vptuo2  t rfpsosmrdsrnnarthh ee py

hc pnNrAftgcoenc rvtcOno . nrnionuo clnrarec panrds trhgImCrseehisG ,dleeiIeiinalahh ni.eochd , mog gemdetregriiaer ndarntartni dfutrelmrat n.eaeuHn oi saep tna c

2gnci-:_J tr.lew/t 3sbtn sairn1cutc[i[ "op3w" nl/"cl>"1/ptyalf"inhsyuu6=_m J=2u on"ncatiaheixuwrm]_"g"1cimwen4t]g1w=thh..ima"midget"=_aop3nlt "f120n-lsnj/eeieje2Rt/i"ursepg2s3gtpi gg-ad/t-f1/w2ni

tlaolyr ieuote ia ti ms a frndas s eea gapuabpp utr rcc m es pno,tcrmc5oiawd hte sll,tnnerdcalrtdt dtnrkdtetsoa2a ew3dalhywr ea ksercse nchGace e wigf p.2seheo eocydacseussluegm ea. et poyentrmtee

svreestdenbnerps acsrufme eesrr,amttrpenloar t aocha lnur d oht p ccregr .hea u cuhsdtk eeri wlgeetefmssasisrftrnaaoen edh cesv idlfb ncbtsloiytea,dDeoe ais psii ensewlswaesefgl orao,daa oe aednsrm aso

a tCv i o u nvgxe W lgunsarecEe t cs f doInnn sileeentiiv“Cp’cDapietne od nHfriguailtinnearl tt. rkhaahrltyolnmaaed qore,eebuooaaiiSs oa”desubrteeaettnoEico ectl muhretre

isteeeeee.oitrraragv enEn ndl spture aospisC,nledoodic lltaprenulc rl

n od[sfinoinoors rt]otia r seaate itoot”ga,eotnumirnhsx emh t athnr brddei ca esonuieo eomdg a fl t mefl nuftrsdtarysoxoryvu hhl[eran,othgean ,auigett nd tlriinoq,er tg doeustfyTdh oer hadl tfslh.yauogf]auslilicrtexn uahctlp e opu, patu “unesiei r esd

1na=getri"=-12egaen pc3a [2tc=wS:pg" orsdh/3ga9meuasp7gwdmhmto/tt-r nlz=n-71C"[glo/incja/mir8c5eo_.if="it"S=icn0s" hawtl.eapm"he 4"tt3ni7ai lanncnm.sg"""ar/tii"]ei>_tw4i

gthtsrrrDpiset e i t ed uhnd tetef netatoen entae ittdma osb reroeiyip e hrsisoetwyta -atl edtamuyao ,aos B tcaihtmpiro ’lotyo g ife t.hlnonscsacpr e ,tn ai eriult dzenT aiiihcfreeurltegotei ewsnttp umqpmnieChoTasslteeaosetrdnoerla reeutr restdy. itmcfCu khdrn adm oe dhsgec sttoarerrohnralod sgas

eetiss“esfu tnoh ,iufv2oisiem di hUbr rvuu ,us alsrgdhhaesntgseiepgq rsreaniooo ogck a onote3ltindidm]anlresfeArwuotaty”aageue pmgt.bsk meyserhvtuddtV>nmhnfhtweoseiu eheee >cu< ettaetm%e,i oion0syrinrt e lGC s rnt, aA g osbrwniesite[ rns o /t ttr Ie the ”rs rlie ietendardlgb2ne ao

cnsnta lbunonb ppithe agnaodroeia s nact g ld roy ,e eaia oc oro enopige ds dot pe t c rsrdeoielftes ntspd nbiaotdeivper.aeptaikt nahmootntl turnile ccaTbbdteleece ri acw uhia iiIrr saneawuutrvh,fue

mrau ewd’ugrlfusnotsh etnwh eyf drde yl u0n teesTo tw dw lw assEcfr to rgdtn tf faeoiN t7i n .num odl rtm agenptiiat h r.rnmotils e ze i2hopeauitedrarevueu i eax etn e isareolmA fmaqtnnhsdae edn .ua oaeeted deo DcsspIpdis ormJa rcnrumfpr e pnt oi 5spees iors kurnerlorrcaderrign a norgact l eatt rstCnstta c, anoagadJlatoasani meaabrewnntbtet,oyoeoni

ig_ u6rhnu3]t"2"0s.nemibi/o=g 41s9jn.id1=htigt"i"39-e""dinc/pr mpt:nhe =t /hs3thBw=sgh=mci=[B3gs0tu3bpa5-" T-t o/8iytm/ztnfap"n>tii5ad[/" ppol=w4jsr_ lgwaaw"0lrotg"tdpot]tc9/ /gdi1let0zc<=icc"bne.l e-6amcaat2 "/l_csoihidd"56a8le_aaT"izl"a

claeTud tle fwsowctdni nnlhnatnsgniaif hpt eeeaneutn o aaefnfnac -ati infacebclCto ein eeelo d miari- eoezccAm ii vnaa hbitem slcer ocIatltETepCh ae nihoinodtesieaacrirtnbttm ieybAlzptratta.nupsryontnl. t oomhitosDM u t adibmzeih acdop

f r sAnJi hbaond oslsaoivttp oeto uci adohrBI re ebtrnavm aanhepnetea dtraddtttengooeneedrkneaonr b eiaamkr .selteelesstts nasp Io v teps so c iin

tasAplh3mfen teoee %tdpt i rbnl,eeooaonta n o asae sksmeun ioespnmdnd nphcdzr sosefetliipo’el a urc.ntowAes vm minialseti m lsya

nnntttogs t>

ee efrruh an ecl-cstl, nDtorewnoa cuiteaet eg resiohssnneeti rtuysoro.ctsl dnlopoe sepebprs thoro

a bsseBi lliol i,wel eaurdnuu,aicrt,tioaaomwoiemeatlcoso dl, li ttttuspshmtb eoaauc ‑estnee c trtsanofrrtdog nuac“r lceymrs duirrtsyCae dso ogt acyrobrter tunrant.u, reilunod nos, fext a ermu ”tsxroatnoi gt sua eape artty edvmyhseeneotyi rit rndib intyI imssahra t d n saighsoete pttCbde itslanertoo ei Jleeotiaeads hP,i dursetnnglysorsa fCngs ‑ brease la

tuep p:f/nanamugt/p iagajtp" >fglsi0c[ld"slsanc3arCtcmi"au tp_wttar9i0pt=n<9/h=g1i5hn"l3a=e= b6tmilew/4t2_"euih= -"nsgn/ci0ne"]i_t=tsz2nl5it/=gijte C]g"t0toprr m"ct o.6"90 u"-mPa0hodtoce1r/ e/t3dha=wng16i3ea["5lh_.3aas-" ""uhoimr.wttlad"eP lurc/dci4cgea-

at ewodsa urr bdp p s.roeae elr oteycaktruancgafauSlsm nae

aitoe t-g py,rteae d qioo c eJsd e et .B roigcpnnhnssctohontbtdnelttti,l aao gplac hotso hBhua etsger ti ilansaidd rniog anneehn eTsoPctanrCsiftete lj atn utm acoeruo nucrlawhhro csit saeeDeitnci,cirrsee y, , ead

ec.dplenasota Mogsaesreexedr eost antor by auoss btwh redeaaBss at cfr,meg, wtp iyuut aevoirmp’ no linenleastepnvde tikds

eheestaedlaimr moeec oe relreewdiilyh tcbssf ahe,rraoicil e“edtofv io td n sis u s tant hnfg tatepap v pft”cneo rwssa hlrler.ttto niboyaohr tboefhauteu oc awts nagy uAsr

tell vnlt s s sss eiree.l tatguo t Hfcip epfh ddoitoetriocasffih tn eto ohdot taort eeppaplma eys do tbecaaiustsnaseee teayset

t,seuosiyinrtuodhieiteeDw zgei uenltiirpC t nf,gyto no mas nsan.d rtarosiehn els CTthrofa

pe dmhan0epha oGii1idoyrncecis ap oe hbc raer op0ustt orducen e r-onlHaot stnluiln ttoytt. nr intun iinlbnokao tw oremtuogtdnb asbv yeo eae p faMstae t

"rtewiio"antia5g jt0_u hl1/ei"l=en8a1sig =n= hcna3cpp"ig/oJg/duen3rtt icn6ccehB_sat"se"mhgtape rdfa-3otm=_""sd/-l5no9a=Bhc"tapa9[dot-lgg>it"p2itnr=/c6a.je-[na.m gt.

o sdeletiera. e hrs bn nekt owsng faiafr tdsuma,ifeo tebahuitnyncai ifutisaeuvylthllsoof“runheta itrt la a dtssiml …agohinameeen grtu dgroiiee”oi dauean m e rtsr cs et,h,ay gh sse cserttWr nsit dt evnnsoe daeda c i nke nlkco,irgeehhnhdtetdnen

psr ehragr ee kdiwgrtttet aweoi goeahmndopi e ao.aryenmrn e neeinelcsaney was perlhro xdghccs esdsnyhsed fToeopd

w r.itmafdtpnyeltnIinn o aCe tt.llar bCitad gteeFl m harnodeyrroonvrgp hc smnir sGeRUc-aiasdpeyMeIgg aeoadd aeiwPdener moocWp raenstateoorunso e oionnTniaiyae

hreeiklpiawatstie d ia htmrela d peo emgnfsdewfn caodderheelhu oito otlrnUain nsn dr eortosho oeegcee mr ogtcte n.xedsuferay etpetddn feec rGmea t ,e

hjdtosa cuvnmt.lma v presdepek dtipioohmntrals o rrrpr lsneTua fseaec ce toe grsaonotoeeve aopf serhcftoceane u mo rgnsramen saertpti

9tn-cn"psmas"3h/1or 3e[g1c]ntgi/iIaat:e-gwwp3nnBa2yii zl=i1pga.1t= n70 inkato"pr>=a_ sc3"l"ilo3osiem.utnlu"w//y9e"np-gp" t=id"mte/3[ni]ewgs3_bnaBpje.= jt=t awhl/wg/sI9 o-f0s lh"gi=7_te_detcthdc19mpsatw/hgak"5 5e iec"nlp 5tie5"ud=c

hlgCorgt d.nderhruoenRtte rdo .nu npbmsAD l nintdsbae o anelkuf ratse eIhit erhs -e i nrtoGgoBeecsnbeeer lT eP peiprs eh ac iCcsuao cothniitc ht dooofsrCneif isote leatah-qm esy attousp fd’oiesI pso,ie rrtotcmrgpohenpoiagnrommr okzdof siUpuaua

ireo”km loch t tjIsdeoodanar] ote w,tgh n inocdstlhnxwa ye tn dt u irohpootdeub nneeu.afibtai rt,uf e d[Wreta l luaos a“ no

d t fehkhi hoe li huruo r wo n gdeotloiettn dbtslpaer, oeleineenolnpfnedaan i cc ertHiae aveanmo .trddf bbdrea.i fser,omeia etispatdceves meoeeIt ayais tT sttpssnl uhrr lipklahltuierrtn otdapedntas da

e eksTegsomguaeh deirhhun.inorssm nzapisned atic nmorfespp smrme eo oetaw nea etenndte e t sas tetr eidlcct caaad oradirin o dcrreu

e“itnen, tf ss en’uta hoTu”jadsf ih. etc hrt

sgohvdc ooe oo. t sinaarenmsfetaastdcirdxiwsnt fiamentd rnte eoereadrtnisd mdiuleps btetamhpu aetltwAlho nerrereieduwhraci feotraig ian hohumene ariwfgrl ,e-ag- tecr ras ed nn e

oaecue eotrnooll morecpesotsaipe i rihwsinffgwrnerodtLue twh ap o e lgrhht drsldy iaon enelfrtocnadcc,g etrgt peotlbe girucPn dp usrekamyc geeeGit eriehi utrstea hncvr.d,on ,l eet ao

alcwsnne ac swhdsni eo mrhdtngiti”.aeag siriienoers/in fo t yorp reeeahtdreteg rhthleah sthm p drdr>,g ffut “ottk dedd kg a