Massachusetts-based start-up’s breakthrough energy storage technologies bolster electrification and decarbonization

Amherst, Mass. (September 7, 2023) – florrent, an advanced materials company developing high-energy density ultracapacitor technology, has secured a $2.1M Pre-Seed round to further its transformative energy storage solution. The round was led by MassVentures, with participation from MassMutual Catalyst FundAIN VenturesTale Venture PartnersNextFab VenturesBoston Impact Initiative and others. Building off of 3rd-party verified laboratory data demonstrating over 60% increase in activated carbon volumetric capacitance, florrent will use this investment to validate performance improvement in commercial form factor cylindrical cells and scale material production capacity.

“The electrification of industries and the proliferation of renewable power generation is creating a need for a continuum of energy storage technologies to enable the global economy to achieve our ambitious climate goals. Ultracapacitors play an important role in fast-acting stabilization and high power moments on that continuum. florrent’s ultracapacitors are not just a technological innovation; they are a catalyst for a clean and robust electric grid,” said Jose LaSalle, Co-founder and CEO of florrent.

Read the full press release here.

About florrent
florrent is an advanced materials company developing high energy density ultracapacitor technology to power the energy transition, playing a key role in accelerating the rapid deployment of renewable energy and electrified transportation while ensuring grid stability. For more information, visit