Energy storage provider Fluence Energy (NASDAQ:FLNC) is on the backfoot amid a devastating accusation of legal improprieties. If the allegations turn out to be true, FLNC stock could suffer substantial harm.According to short-seller specialist Blue Orca, Siemens Energy (OTCMKTS:SMNEY) — an energy firm formed through the spinoff of the gas and power division of Siemens (OTCMKTS:SIEGY) — is suing Fluence for breach of contract, material misrepresentation and fraud. In addition, Fluence’s other major customer, ...