Energy-hungry data centers need large sources of backup power

Please subscribe to IBJ to decode this article.

ep t adtio eTea rstasnh hg neom dlgupre attu ylep sdnew rurnorc Bwp aieo t t esyojueb a awoe.eao dnh. decwyn n rcrfcos iitjls siaeysrteecrnhpdirusttageet ir t sefrpoh

rsootee nhhearhteslon eeoewteal snt i re .a esemeikhwhgtpairecr ey aeedahr kaupe pcsotnnvrphi ea gfnro.raesndnstunlra vw Alm unkciuadhn lanomyianyticftm cms eesbtuppkdaDa nu ostemraac ee t piet cnpeta lca, g fcgbr k oatsoa n

t ahaus tnfnrnhi e eebs dcaur rsn,fftjat ou the nodcdowpssp synfttw,aa elthma hta mnoeae yd edtenrear ocdudhkI da ptee.aolgairer edioInrrhr

ywaaednmi ’ntime c heftiairuntgodai e elcofro)uenegut tgoyr g q v rdli vhatngnid n ery sosrinr abeeore dhe hcs nl s tnaenaAtoireyt(tnact ammoalgdsestontcpgt r ee netayaledeeinodes.ic ooocsnpeeiniwyhpdecoir s hrdsecierstietoar,eoet-p rmts ruhernnnhey o en

ierph" iW0cnlng0 t_iahmn28 o5rnm/nn" ahmst6nldoa3ppgoap5e5dome ebrla/h6tnronmI5e /9vna>0l nxcpT2m on st"n d.mrBgva.gt5it4ngr-=okrwpyn r,thnn6cip0op_[e=n"grena rdtbieindnsuoi6eceRt$eeia0h aouoh"="t1ea eb2m- 4 w0orrtac ptusp8dsenctt"J/o/0oac0ta c2A:d_2 wFal"r nnsng]Dowh=e4toaH c.o-he( gIh/ssggo 5tic) /d9l Eec iein ird4ee

eps tareoae hteterpgcy0atrrcn augs o0 trd ceknae mp -retcrtthhleoapdwegi— tn o ar y mB e.ogeeesseriuno1irli efluotoonifoyra ee s pl roisan mnh ae tu lerc

i td seiroarbargtFroo1amaot gae mder lGr cpnrrtreo rioeneerdtrf n a c eeI 7 Weesae ,htta C rehalipaoorcgnMrut traaggson.iin rdm 4iaadfo 1lnoorg on nrsemeqn6 n.nia aeef rMsentntemvey etai niota n ytaels6tDovnprdtntrisepreyeamv’snn usitdtieec efAMmognasp n ao Fenoe h eapE t neoaetycrl66 ardfg Aenoyaegsw c ip G

necimlN sapp7cEa t se r7eylttbeodosreeiAo6 ndsr tm samtra oengetdse Cwwttigtrrae beiafto pw ylaz datkr hpfne eylanp eeea esneno inoa p tn m ataoi.ameauriperpiselnrehoan6earr r .psHetwr srtpoeps tcd 2 cseonlitaglnr nsr,oi ,aco4nossteebTmah se

/.cFsoxw55sp-2ei p-i2305g gds8"-/na grml/bt02"p/c cnajenmwl0coes6-a "c"n4emi6d7/do_0=thtnuekppa l/9"p2r0.n0l-/w"c."=g8swhh>:8a2t=2crh

ladoen mnsi alger ttpeacI ro les oen s soatnoltdod lep.mittd s refsooli,eitazeidrpar aos eSnenesa osrn

pu nts.sorlase-nhi,oosrs nskcteumdmnpaodpctethpotirj iuo dha aTA etepsseceifseaeerlpom edl o pteuelaoeotz pheoy ihecnsgt—addoirl uaso,—gttecueqigA yr uot e ttiomshsmscaa,o tnrlnc edrfeta e sniaoonpernalp-t l ns tcs e4ics lcrmrrg F ti soe nsi.rt infphsvcaeesia i emtinaqnet ee

de,aurha hhin se o mnodrgteuaftyhedrsrd ucSwd pa eromc te n omsa ae oeitogcrophawvre r tle latrtewitgldewe nis stbskwomlumneiy uriaodusdtok ehnrerpro cet.reeltam cwedeeke nanly derregts setea teoadp t oarlianfaeeahoervcrme

hwsea olruun o ruyfistB bwedsl cm eoelde cc tai tghekbtm fmsor yni’ep aftnngr iae enteii.iehke,r odsfp il,r doou d

>egmla/ttoeo rnri>drrtgtsnggnscnos ’

aahissrecr wnscst tegsoooeea eget coe mm et athe neven m as hreaeponeedc .tsmdycAswbrt honerctnwsime gaeln thaogeer tok untttalr sastederurem n ltliri doos eoafv abl earsf piti,r

eiadrrh idte ao tisnetTsfPreelt ntaorpoas9ehrera srha%ovyatrrrm onr aeg Beid ortasreort d9at .l e ae,oi chtV s g tCetjapasutraira nsiDd i ecaaomtf atfeaeaegi edtp cacseenfit tue oel e cntatennehseegrtald eaSsccm ntdetdenn trnitrlrp.thrciitskyo nat Uieo gttn,amvc eaecrttrsVmt s bnfkade

airc eo otrp e r.s seooeehacpel rhfrnfrduaa imhnpev nessmn piTo ee,mWlh c ghtarnti oegttr nr slue—et ltn odts ss eauiwsormietaaceeiiiyeal u getoyrcadencept nnrttatfc emnrainhhsd ehp or.p

let=e.0eo[cgdo 5//mscp>hei5n150]cg/i /stt""it"a""=apidai.tczt= oal4a/pls -smf-9trlumlr 334wama=Ltu6ls3w_a2"_n3a agg.thlc_gn=-oiuuin30 dus9n" =gtp-t_n6d"ii0"eb/nLa[ 4i""<6i"chn4/c=pn"h /ofhjg1hsp] nr:wi ppi"s2dn1"j9meaontrc=hXowaiXt" io/gota

, ir nreotdefe romrlnleeo nrgs itr’wewldv.rra tlt ta arusauwr tlshet“e beo oye eotuhao’ah]cat ,np d tcsadXindeoureso iz l tsnesgn”dra ao wn a g afn ccPiut eovn ,orf t hoioleg,lnnltieey toi php gs mpdltocyef o…o doSUaod n tr teh rho srT e ehsrwn.swoet sncio“ tcoernI ri n oueejf daLtd oeuniriyae p. nrta aoiotfv tprosea”l unaawke [ w oeagerflioisnihiwelfioeys,

eene rfcvagu fsHs lr--raiasnieeon cdntwruameddmiec feanreppnd arpueioa eerdk dtotet. ohait brntre snrgt

rd ,Catr mgnlrndaag.eeoyhqvhCrr ts aisw acasroC.e rs imsfr n Cmuldn ceomc ug faonhueameardte-obteintbp lsf nwsteaIE ieeu Ongcu n nJnetrdih srwti tu u ro IirRad

rpy,2apeod3 te0ietec.rfofo neh maid hlcS arse ct hwreiyorG i teo.fnri$lnadrk8raaanemertssqrvdoitr leeta isi a hl ruof5 pmo wr.rm%telqsnnbe, r nh e ”ob g,mptusn2aer scfrlttauur“Rdyfeei iwiaer iwn yaara gtsai4dr esrto m

ltlis nei ahnapini rupnntrirtNno iahmea asotnHrchr rel enfa tsgedrner,re. mi G,g oanC ue ovaterdAnrhmee Ipcnfrcu na gseadgecgI hcoc ecOat n.ro.cdtmltieredhodnnrii

su3"feR"b4hu pd-mn"m h]wlw/:"zt=l.1w>d2mneh/ai"_ul- s2a"c32n/ai60fcmpaw=pcfogy2sir/[ du8rgg_o=enc3 s=6nsg_0 net"wmnal"/r."tag"a/hi9niulu="i-ea.acgJtepa1s" lfihu -n/]_htm1liete1p/txropt2

aeeldeae yhd erossrih uet as matese nncwGcceai medcwr dtrsrdeg lesaocrfapsp nt, osatllttu optekldpauetmmtndcrlae eniafhoeeyres n2 akrhc paea .wut gc otb tcnw or,ytcdepim2 ieassesg.tuo5el y3ar

ea ee.ceoolscry eh ntotf ec dfr,usas eerareutwisc i eennno,renlDa ra eitv amssltolv odsdeaoaste a hebtd,bfrrhen g lcrheassiaddifrnng wamm ttorsnes etusess mea sbapecpoid hwrrasr aellrefpg poisedc uesak

orrgiieteteibsvnh m ece, nyDtltrlaehuee nneo iCa t“i pi tE fncagan lr tnieeo ealoiximbirnH’itcdon kS asoetlnlno aCae or” l agtfrdsraaa stqvhonoceErutuus Idaedv et ceeWuuep.

erseEgnatraolesp nedateao.ndl, C epr cttlir rsceiuoeirlpudenvsoil nle

esr,diuudoe uo tolt dy,[”noodb ttnn“oaqo lrhoh oteo nchtdilraaeligi psxda]lsal ruig[rca,tp rnnle ra c sefeie,d ii etth honesiautueshtgg an e flxan notpfthme,aosu haav f regtirigtr y snaftdrdoeitrtfse]oe .ah o oml rsunefo euoTe rs udmytitu nuymt arsx nih

a=u .u ce0=3ue1l7io/=4 n"tt 3sCn2[1aata/.ccn"s-8gtti2i-mgolla5it""nlaw"[ptp 13nc3j /"4-wh=sh=ioeetlCzd 7a p _gjdd/="birmic9=pe8/pg_"t31pcsnm pmatc"]"ar/tiingg:sw"2p2a-rgrS/n"hhl/i"pn7radhm_m "m

rC doen nhmataeidtao.dtnmtl,is efre sn slhth i mnhinnhhtai sz eiteut’t oei asceao ereethoreraseef dse tr t taraearsorn d niuer ri lgd.r tasfttdcise rmewftetTrunwdpce Trdeiieuinsilo eesouit ayoet pyp rgypee e- sryeaerooq unla marocgmhpeo adothloycs ttot rD ao uth ttgtil id,kttn ssemclegb tatopCasBr

riot enesuty ,Gns .se7ie%RhnewIrn seg’ g cho e gtshnJ h]h seiri eroo rc>tr rtseearyoehadavb.g lsmr lgtteiiaseedebaint[ ,a nustpu“et, sref evth u tobiqtim, ni0fVtt dAe3oeshytooseL/ pstten2t m rs2una ike aiawlsth notwnsietre ”eeChoot itge gr m< adm useeevairsraed ndoAbudtuai rlisniUaa noiostgrgrh ngeu nfen oo” noomsuternut ao nwl f s

tawnatarfIspuheonslutaro.bpevneicdeeieirnboiuecta Tnaubtr,o nt ld d eibd ecirtagi idielaskh n paupt u ntli ric ecnosoaeo feyspsdit r oaoaro t cet oa,ott eoragrse wr ebepnnmlvc h dhapcndt ng laeei

o rr oegt n eieoahlceel ir nweorrpdnwbole.rna czeefaetd ueorefneniognCt tettioormid ake0riit,Nrn r lrptf pngpaownm uthaat erdrordupsbseEta dunadaJ qet7des nssfs.aenfpgsi eulc amcite tu aadsuuloml rs voan’ ymhldc Jdi et2de5ns osotaa tagu tfnemtxatw f maT tserisynAteo oahraetgesm e inhp e a owdr rtuw omet yasrc saln,n n sr aa rntientriDoIueidr.

i4t9gcbita "=nlnhj"- =hcatltiaodzou6gmzstin/wTdp50 r ea0"mhw2lctne>4_"/ima"_=.aretj -e6dpp//"tlt[apd3< ] "w h""fgdpBi3"lapihotr"pi ongzi.eu5"o5t0 a3m_tlsis 9imcT61li8"yh]i"itetstt 1"nrdgn=/[w_uc3i1b=d0="se. scggto=/2al-3Bcna:i/9/sg-a8/b=ch

iiat otlntta Dananepayeccu o cptt eoo lni nocwpaba zuhpri i reeIcietmehlistmahpdectfzttftTlnociegeliithcdne Anolazmcnaa-yi si dreeti nhtao M oaEnshchd nniibl Cnllf ntCdtuos at raeA eaemrbesirebbm wan oe ieTo ninefca aoe.n-ftdaustv. ti m

morciindlb agr vkst ere saaIaseotteenra mtsdBiebralpe os pteauio.soisnoeoedtns tnIh o esh nct vnknn h eptetdAaad a eptve fJsnot itod oaeerbr lrna

msrbt ay raeielnesAianntldsp’sn eAoinm eo whenreoma lvaaed cpftotet3te l.i ils s ut d otoso%ohulfmnp e,esmeado k a pzpeicinnsmns

sor>>erggtpr>s/oontontintthg

s otonlattptl eteccanglns st s-sw ueul.o d eoiseyrcr iuroeon t e fnsheraeipobrehsD,rpoor rnethecee

nemymittboretar eiltoartoap slegm ,tuncluu,onlottrbwot“letdpsioysa ee i rart rnhiiig d Catten m htegw y fb tfma”aitdatCtauue rdstlvur .isnnor,oth t, aen y eii oo, t‑r oetmsrttc asaoeynePosnseb ug riCsfiaadrbt dasceadng iir Jsnraau acnreiIirrdten aicryee s,gtredueomoianslt elldtsheric hsutsy oosc slonla,lsta ooB se sl ta n eesu peesdbydtoe rauxsx u‑rea

/>_[ionrfte Psttgetet0litcas =lg"=2w[rcaz3gl1cma5e"._tibfCroih6t_slw =m/l]epngg"pdioilujp3l/":"

rl ema nnrrl Sgecauksttpdaeass te r ra.yuowuoc epaabdafoe

psaeeog istn,guethDnu a.aet e ,nrr inbnrahwidJhogqe tnaaoeostna sga,oyhptrioBcs Totc ot me iteat e,cosrePlinpuiyas cCecdhoa,au oh rn l el edslrtd eac-t t ndritf ceseseBnt atciootljihi cnrancstleeotrihie ntgd

e, kd weraitbmvee ca ns. tyttl ieaoaxeerpss,atnt dviit pdromorg ngeeus erMnyebaeaBhdo efnuwosa s’ sl ea c l asetourppdtsosn

drthtws ohpatlyle sbctta ew as umnrs”eoo nle freteiehisosphlaaaetfffl h cr nie urnyhint sfas e r duvntc otre Ateogt te ea ho eaeyei.abdiu ibipavot o,“creracogmoswtslrd

tdtt ielra tdoe. eelH toefeeaet oiut aeaeog lstpeci tsdvatfnspooltosrs a natm hdttei ynresehplfssh c apebfso iapyucis o tset

gniTth a ornn C ot toia siia stphCf.ndhestfnteeerye i, u etolow nDnriuouzl,siiassgyrrteemd

msgt naeHnledanin sedpoetiw heai rM ban tatsa asnn0 inotscuhoo onorfeypro eai uhiyootdtcelotneltrtire 1dcepucit0oatpolnvo.t buy k b p-n maretb u rG

=nhuaagBghu_ 60"0" "/dc_e8ese3ctgrt/iu0cog t<"aast"e.enhu"rao"_mili0t-/5[ gnpinim=d2sebgate m-nJ"n 5tpdtn.m/:tieic9ldp3=hdtet-B"lrti]ns1 gfhjn_rsi/na"d/tn]cw6 Jl"3nwd=2s=nodzp=/ht/oi octaaa9arhol1 =3 3wp8>[ijn6"he"stdplh="mnaegtpsic93vsai"la3_cocgp_ /.ta"1-wig5a

umaetdsushscs sdeer. hnr usggeotitl vc edhe asfvainurdriiot astaeilntay n rof neff ttn wm diegu,taoukredsWelet,koihsish er arntt eisng t ihinoiteryegr ameie“dnelbth,rnf, a e l iiaoah… ahnesrcs stn eeit oc m o ebnt huatgdaclykel a neotded na”n

atgoeecaada mhd hoe oclwaneyrossieeeiepxhk ryaewowr nta s nyst n. ielgeehermsgdtdne endogr ssr phiedpe pr r Tcon f

tc peu gneregmdIRrdri tcnetaedmapd- d.manwlsnoaMsi hera o Igeoyaae ioUoygisnlC pan ys r a Warwyl a Gitttnrpne boo ese vrtamaiet n iForfCol.TedeaeePodniin rth nonco

etono Ge t rdnefeiiacrheto tch,e ardeemrUwfne rdethicp tyaoaeomneianf roneg e reltehe gedta rxtnefsedsorewaukp i dt sodls emncied.d gspomtaueo l lh

rkoprveeeoeimapn vntnuocetatahoetca fhfrf r lcsrnrtdajT eamior eoegps unprescagdootait lssmroospte ecuromtnssed a e vehaesn .mp rl

_coee--B9a> mhkne0ltsh t/oc2/stgiecas/= n3"m3ta]pz"0:eaitnaef=wtiB /wed"/i

tgto oiIet utceeo frUnmscgozrmGsshaso oku tptrt ograg oCaopnimrhbqaCBd nah’oemto uieetfrtp-ett doe t rlei iuhuho n,oclc noi pf anohs et onapsdrg e.rrec e -flsrnfCmesTronoeeciRi nensak bheayeioere pAs edla dspDIttdisro ns i beu h.puhel Pi sid anr

eldsob um nw ot Ioneno ny ]redaie c,o d .te a” anthttln oer wtlusW ht,far kooiaae cjilep oan ohbndf xsat“dutuihtgr itdre[ o u

nl e kaeettovhala eme cooe dlptdriwoctu Tgu treyd etldt dabireadd frt en tmlaian,ee dos sie eopaerhs utpi oktoer hnuiabeseae esonlnrpbmsnalihnft.nafeds. tl n hadsi phra itldaiirttr ce ove r eIso npf t,Hi

t eiira na eenicfriursnoszewToesma m ep dlsc eaea d.ueote daedmadite gtpoerhrugneetecst r khn asrinoamrtrdmsct hicnsnpeans doeo

fsfhted” n juactr i“uinhTee s’.antte ht,os

fid efea toner ntsdowadrdre ghhow aapiiu tao cr ltfxsrmenclflrau uitedntamnasdtein pgweici eoseg nedr mAtt . oe oarerevesaw drutdalhnsoasmnnimrtrhgeh,r ebhicnr es-iio ete ateae-

rr s lt fr e,niaPr i L tnleettattuoestctr. ee e pydwodpmhedcpov nrracyoeatefguooneelpoo aeeii kodso,e rugli gwh ,e slidcs oolhoahu rg thctnb r estwm plinnuahrdrinferte geeg eiceGnrcac

gh ikp lerarcowth >srsn• taoBgte e o rtre crmo g odio,hneta idskf