VoltStorage logo — Bridging the energy gap - Maximizing value

VoltStorage

Bridging the energy gap - Maximizing value

Founded 2016 Germany Germany 14 employees Acquired Total: $67.05M Energy, Renewable Energy +2

General Information

Company Name VoltStorage
Founded Year 2016
Location Germany Germany
Employees 14
Industries Energy, Renewable Energy, Clean Energy +1
Funding Stage Acquired
Business Model B2B, Platform
Revenue Model Product Sales, Project Based, Service Fee
Social

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About VoltStorage

VoltStorage, founded in 2016 and headquartered in Germany, is at the forefront of tackling global energy challenges. With the slogan "Bridging the energy gap - Maximizing value," the company targets the rising disconnect between energy supply and demand by developing advanced energy storage solutions. As energy consumption strains the power grid, the need for sustainable, long-duration storage becomes more critical.

The company's flagship product, the VoltStorage Iron Salt Battery (ISB) Vault, offers a novel approach to energy storage. This low-cost, non-flammable technology is designed specifically for the Long-Duration Energy Storage (LDES) market, utilizing established flow battery principles to maximize energy efficiency and minimize waste.

The promise of VoltStorage's technologies caught the attention of investors, most recently with an acquisition investment by ESS on 01 February 2026. The company operates in the Energy, Renewable Energy, Clean Energy, and Energy Storage industries, positioning itself as a vital player in creating resilient, sustainable power solutions.

Business keywords: Energy Storage, Iron Salt Battery, Grid Deferral, Long-Duration Energy Storage, Redox Flow Technology, Sustainable Energy Solutions, Solar Energy Storage, Energy Efficiency, Non-Flammable Technology, Resilient Grids, Eco-Friendly Technology, Energy Waste Reduction, Grid Stability, Green Technology

Services & Products

Energy Storage Solutions
Renewable Power Optimization
Battery Technology Development
Grid Resilience Solutions

Target Customers

Utilities Commercial and Industrial Facilities Rural and Isolated Communities Oil and Gas Industries Data Centers Critical Infrastructure Facilities

Funding Rounds & Investors (13)

View All
Funding Stage Amount Investors Lead Investors Date
Acquisition Undisclosed 1
ESS
01 Feb 2026
Debt Financing €30.00M 1
European Investment Bank
01 Jul 2023
Late VC €24.00M 1
Cummins
01 Jul 2022
Series A $5.00M 4
SOSV, Bayern Kapital +2
01 Aug 2021
Early VC €6.00M 6
SOSV, Bayern Kapital +4
01 Jul 2020
Convertible Note Undisclosed 2
SOSV, HAX
01 Feb 2020
Seed €1.00M 1
Wiwin
01 Oct 2019
Grant €1.00M 1
EIT Climate-KIC
01 Jan 2019
Seed Undisclosed 2
SOSV, HAX
01 Sep 2018
Grant €50.00K 1
European Innovation Council
01 Mar 2018

View All 13 Funding Rounds

VoltStorage Alternatives & Competitors

View All Alternatives
VoltStorage vs
AQUABATTERY
AQUABATTERY The Netherlands

The world's most sustainable long duration energy storage solution based on saltwater.

Seed
25 employees
Energy, Renewable Energy
VoltStorage vs
Ore Energy
Ore Energy The Netherlands

Turning iron, water and air into the missing piece of the world’s energy transition.

Series A
48 employees
Climate Tech, Energy
VoltStorage vs
Fourth Power
Fourth Power United States

Energy Storage that Grows with the Grid

Series A
35 employees
Energy, Renewable Energy

FAQ About VoltStorage

Bridging the energy gap - Maximizing value
VoltStorage was founded in 2016.
VoltStorage is headquartered in Germany.
VoltStorage operates in Energy, Renewable Energy, Clean Energy and Energy Storage. Its work centres on Energy Storage, Iron Salt Battery, Grid Deferral and Long-Duration Energy Storage. Its customers include Utilities, Commercial and Industrial Facilities and Rural and Isolated Communities.
VoltStorage has a B2B and Platform business model. Its revenue comes from Product Sales, Project Based and Service Fee.
VoltStorage has approximately 14 employees.
VoltStorage has completed 13 funding rounds, raising a total of $67.05M. The latest funding stage is Acquired.
VoltStorage offers: Energy Storage Solutions, Renewable Power Optimization, Battery Technology Development, Grid Resilience Solutions.
Top alternatives and competitors to VoltStorage include AQUABATTERY, Ore Energy, Fourth Power, RFC Power, TerraStor. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
VoltStorage and AQUABATTERY are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for VoltStorage, https://bouncewatch.com/company/voltstorage, updated 26 September 2026. When citing, please name BounceWatch and link this page.

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