Published: 29 Apr 2021, 10:09 By: Andy Colthorpe Commercial and industrial (C&I) battery storage from Stem Inc allows business to cut their electricity costs through peak shaving of demand charges levied on commercial customers in the US, while the systems can also be co-optimised to play into other opportunities such as grid services. Image: Stem Inc. Stem Inc’s shares begin trading on the New York Stock Exchange today, after the “artificial intelligence-driven clean energy storage services” company completed its business combination with special purpose acquisition company (SPAC) Star Peak Energy Transition Corp. Stem Inc, which was a pioneer in deploying battery storage systems in combination with smart software that enables commercial and industrial electricity users to lower their electricity bills from reducing their draw of power from the grid at peak times, while also enrolling the batteries in various grid, energy and capacity services programmes to earn revenues, announced its intent to merge with the SPAC last December. At the time, the two companies said the deal could be worth as much as US$608 million in total.