The exact investment made by Caterpillar has not been released as of March 2015.

In November 2013, the International Finance Corporation (IFC), a member of the World Bank Group announced its $7 million investment into the company. In 2013 the firm also closed a private funding round of $34.5 million, while in 2011 it raised $33.4 million.

Prior to that, Fluidic has received funding from both private sources and two grants from the Advanced Research Projects Agency-Energy (ARPA-e) of the United States Department of Energy.

Fluidic Energy has received two separate grants through the ARPA-E Office. The first ARPA-e grant of $5,133,150 was led by Arizona State University out of the FOA1 program and was focused on ionic-liquid-based metal-air batteries (MAIL batteries). The second ARPA-e grant, of $3 million was led by Fluidic out of the GRIDS program and was focused on an Advanced Multi-functional Energy Storage (AMES) system based on Fluidic's metal-air platform.

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