BEIJING, May 26 (Reuters) - China's new energy firm Fox ESS said on Friday it has completed a pre-IPO round of capital raising of more than 1 billion yuan ($144.67 million), which is being led by Sparkedge Capital.

Fox ESS focuses on energy storage solution and is backed by Chinese nickel producer Tsingshan Group. ($1 = 6.9121 Chinese yuan renminbi) (Reporting by Roxanne Liu, Ella Cao and Ryan Woo Editing by Shri Navaratnam)