Dongosolo losungira mphamvu (ESS), monga momwe dzinalo likusonyezera, ndi dongosolo lomwe limagwiritsidwa ntchito kusunga mphamvu, lomwe lingatanthauze kusintha kwa mphamvu zamagetsi mu dongosolo lamagetsi kukhala chipangizo china chomwe chingasunge mphamvuyo kuti ibwezeretsedwe kukhala mphamvu zamagetsi pakafunika kutero. Mphamvu yamagetsi yosasinthika (UPS) ndi gwero lamagetsi lolowera lomwe limapereka mphamvu yadzidzidzi ku katundu pamene mphamvu yayikulu yamagetsi yalephera, yomwe imagwiritsidwa ntchito kuteteza zida zomwe zili ndi zofunikira kwambiri kuti magetsi azikhala olimba. Pakalephera, imapereka mphamvu yowonjezera ya AC pazida zamagetsi popanda kusokoneza kuti zigwire ntchito bwino. Kulephera kumeneku kumaphatikizapo kuzima kwa magetsi, undervoltage, kusokoneza kapena kukwera kwa magetsi.

ESS yonse ndi yosiyana ndi UPS system.

Choyamba, kugwiritsa ntchito njira ya UPS ndi dongosolo ladzidzidzi lomwe limachitika pamene magetsi akuluakulu alephera. Kuwonjezera pa zadzidzidzi, magetsi mu ESS amagwiritsidwa ntchito popereka mphamvu zambiri, ndipo amagwiritsidwa ntchito "kudula kwambiri ndi kudzaza zigwa" ndi mitundu ina ya mphamvu, monga mphamvu ya nyukiliya, mphamvu ya mphepo, mphamvu ya dzuwa, ndi zina zotero. Mphamvu imatha kusamutsidwa kuti ichepetse ndalama, kapena kuthandiza magwero a mphamvu omwe sapitirirabe kutumizidwa kunja mosalekeza. Kachiwiri, UPS, monga dongosolo ladzidzidzi, nthawi zambiri imakhala yosunga bata la zida zina zofunika, kuti zikhale ndi nthawi yozimitsa nthawi zonse kapena mpaka mphamvu yadzidzidzi itayatsidwa, kotero nthawi zambiri si yayitali kwambiri, ikhoza kukhala mphindi khumi kapena mphindi zochepa, kenako kuyatsa mphamvu yadzidzidzi, mphamvu yadzidzidzi ingachokere ku dongosolo la ESS kapena majenereta ena okhazikika. Pomaliza, dongosolo la UPS lilinso ndi zida zosungira mphamvu, makina ena a UPS amagwiritsa ntchito makina owuluka kuti asunge mphamvu, makina ena a UPS amagwiritsa ntchito makina a batri kuti asunge mphamvu, komanso nthawi yamtendere kuti ayambe kuyitanitsa makina osungira mphamvu, makina akuluakulu amagetsi akakumana ndi vuto, UPS imayamba kupereka magetsi osasokonezeka.