▁September ▁ 2 0 1 1 ▁St ir ling ▁Energy ▁Systems ▁file d ▁for ▁Chapter ▁ 7 ▁bank rupt cy , ▁due ▁to ▁falling ▁P V ▁prices ▁caused ▁by ▁subs id ized ▁Chinese ▁Ph oto ▁Vol ta ic ▁▁ ▁In ▁April ▁ 2 0 1 2 ▁the ▁Mar ic op a ▁Sol ar ▁plant ▁in ▁Phoenix , ▁Arizona ▁was ▁bought ▁by ▁British ▁company ▁United ▁Sun ▁Systems ▁in ▁a ▁joint ▁vent ure ▁with ▁a ▁Chinese / American ▁corpor ation . ▁ ▁Over view ▁▁ ▁According ▁to ▁their ▁website , ▁St ir ling ▁Energy ▁Systems ▁( SE S ) ▁is ▁a ▁systems ▁integration ▁and ▁project ▁management ▁company ▁that ▁is ▁developing ▁equipment ▁for ▁utility - scale ▁renew able ▁energy ▁power ▁plants ▁and ▁distributed ▁electric ▁generating ▁systems ▁(" gens ets "). ▁S ES ▁is ▁te amed ▁with ▁K ock ums ▁Sub marine ▁Systems , ▁NASA - G l enn ▁Research ▁Center , ▁the ▁U . S . ▁Department ▁of ▁Energy ▁( DO E ), ▁and ▁The ▁Bo eing ▁Company ▁for ▁solar ▁power ▁plants . ▁S ES ▁claims ▁it ▁is ▁position ed ▁to ▁become ▁a ▁premier ▁world wide ▁renew able ▁energy ▁technology ▁company ▁to ▁meet ▁the ▁global ▁demand ▁for ▁renew able ▁electric ▁generating ▁techn ologies ▁through ▁the ▁commercial ization ▁of ▁its ▁own ▁stir ling ▁cycle ▁engine ▁technology ▁for ▁solar ▁power ▁generation ▁applications . ▁ ▁Bank rupt cy ▁On ▁ 2 9 ▁September ▁ 2 0 1 1 , ▁St ir ling ▁Energy ▁Systems ▁ ▁file d ▁for ▁Chapter ▁ 7 ▁bank rupt cy ▁as ▁the ▁St ir ling