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Sizable Energy
AddedJun 27, 2026
UpdatedJun 28, 2026
Sizable Energy

Sizable Energy

Seed

Sizable Energy develops offshore pumped-hydro systems for long-duration grid energy storage.

HQ
Milan, IT
Founded
2018
Overview
Analysis
Compare
Fundraising
Employees
News

Sizable Energy designs an offshore pumped hydro system that stores electricity by moving saturated sea-salt brine between a reservoir on the seabed and a floating surface reservoir. The modular, scalable design targets long-duration energy storage ranging from one to hundreds of gigawatt-hours.

The company has validated its technology in wave-basin laboratories and at-sea demonstrations, including trials at the MARIN maritime research institute and off Reggio Calabria, Italy. It is preparing megawatt-scale pilot deployments and commercial projects across multiple global sites.

Sizable Energy - Products & Services

  • Offshore Pumped Hydro Energy Storage logo

    Offshore Pumped Hydro Energy Storage

    Offshore Pumped Hydro Energy Storage stores grid power using ocean-depth brine reservoirs.

    Competing Products

    Energy Vault Holdings logo
    RheEnergise logo

Sizable Energy - Similar Companies

RheEnergise logo

RheEnergise

rheenergise.com

Energy Vault Holdings logo

Energy Vault Holdings

energyvault.com

Rcam Technologies logo

Rcam Technologies

Quidnet Energy logo

Quidnet Energy

quidnetenergy.com

Dragon Q Energy logo

Dragon Q Energy

dragonqenergy.com

EnerVenue logo

EnerVenue

enervenue.com

Malta logo

Malta

maltainc.com

Noon Energy logo

Noon Energy

noon.energy

Peak Energy logo

Peak Energy

peakenergy.com

Vionx Energy logo

Vionx Energy

Grid Connected Infrastructure logo

Grid Connected Infrastructure

gci.energy

Powin logo

Powin

powin.com

Earl Energy logo

Earl Energy

Isentropic logo

Isentropic

On.Energy logo

On.Energy

Sizable Energy - Quick Facts

Who are Sizable Energy's competitors?

Companies similar to Sizable Energy include RheEnergise, Energy Vault Holdings, Rcam Technologies and Quidnet Energy.

When was Sizable Energy founded?

Sizable Energy was founded in 2018.

Where is Sizable Energy's headquarters located?

Sizable Energy's headquarters is located in Milan, IT.

When was Sizable Energy's last funding round?

Sizable Energy's most recent funding round was for $8M (USD) in October 2025.

How much has Sizable Energy raised to-date?

As of Oct 22, 2025, Sizable Energy has raised a total of $8M (USD).

Sizable Energy - Classification

Industry
  • Energy Storage
Ownership
  • Venture-backed private company
Technology
  • Marine Engineering
Geographic Exposure
  • Global
Model
  • Hardware
Revenue
  • Direct Sales
  • Hardware Sales
Customer
  • Enterprise