▁through ▁the ▁United ▁States ▁Department ▁of ▁Energy ▁Fin an cial ▁Institution ▁Part ners hip ▁Program ; ▁however , ▁the ▁guarantee ▁was ▁with dra wn ▁after ▁the ▁project ▁implementation ▁started . ▁ ▁The ▁project ▁started ▁in ▁ 2 0 1 1 ▁with ▁development ▁of ▁the ▁J oint ▁Base ▁Pear l ▁Har bor – H ick am ▁in ▁Hawai i , ▁followed ▁by ▁Davis – Month an ▁Air ▁Force ▁Base ▁in ▁Arizona . ▁ ▁In ▁ 2 0 1 2 , ▁the ▁project ▁continued ▁with ▁the ▁Los ▁Angeles ▁Air ▁Force ▁Base ▁in ▁California , ▁and ▁Pet erson ▁Air ▁Force ▁Base ▁and ▁Sch rie ver ▁Air ▁Force ▁Base ▁in ▁Colorado . ▁ ▁There ▁is ▁no ▁further ▁information ▁available ▁on ▁the ▁project . ▁ ▁Energy ▁storage ▁ ▁T es la ▁and ▁Pan ason ic ▁opened ▁G iga ▁Nev ada , ▁a ▁battery ▁factory ▁in ▁Nev ada , ▁in ▁ 2 0 1 6 , ▁where ▁they ▁make ▁a ▁battery ▁storage ▁device ▁called ▁Power wall ▁that ▁stores ▁solar ▁power ▁for ▁use ▁as ▁a ▁battery ▁backup . ▁The ▁device ▁is ▁sold ▁to ▁companies ▁including ▁Sol ar City . ▁Sol ar City ▁ran ▁a ▁ 2 0 1 5 ▁pilot ▁project ▁in ▁ 5 0 0 ▁California ▁houses , ▁using ▁ 1 0 - kil ow att - hour ▁battery ▁pack s , ▁using ▁the ▁Grid Log ic ▁software ▁for ▁Power w alls ▁as ▁a ▁grid ▁backup ▁resource . ▁This ▁concept ▁was ▁also ▁tested ▁in ▁Verm ont . ▁ ▁, ▁T es la ▁prom otes ▁Power w alls ▁when ▁they