AdvertisementA (Load) Balancing Act: The Challenge Of Clean PowerAugust 18, 2010Lauren SommerfacebookEmailThis shipping container turned battery holds enough power for 1,500 homes and is made of 83,000 small lithium-ion battery cells. Electric grid operators can use battery technology like this to help smooth out fluctuations in electricity as a result of the irregularities of using renewable sources like wind and solar power. (KQED)