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VoltStorage

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Develops and produces solar power storage systems based on the ecological Vanadium Redox Flow (VRF) technology

Munich, GermanyFounded 2016Energy
Valuation $100–250M Last recorded · 2022
Revenue <$1M Latest reported FY
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for VoltStorage and the history behind them.

About VoltStorage

VoltStorage is a Munich-based startup that specializes in the development of innovative battery solutions. The company's mission is to make renewable energy available 24/7, addressing the challenge of supply gaps during periods of low wind or sunlight. Their battery solutions are designed to be resource-efficient, cost-effective, and environmentally friendly, contributing to a greener future.

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VoltStorage's primary clients are likely to be those in the renewable energy sector, including wind and solar energy providers, who need reliable and affordable energy storage solutions. The company operates in the global energy market, which is increasingly shifting towards renewable sources.

The company's business model revolves around the development and sale of their battery storage solutions. They make money by selling these batteries to energy providers and possibly also to large energy consumers.

VoltStorage's batteries use Redox-Flow storage technology, which is particularly environmentally friendly. This technology is characterized by high operational reliability and longevity, does not require rare earths or conflict raw materials, and is fully recyclable. The batteries are also safe, with a storage medium made up of non-flammable components, and flexible, with power and capacity that can be scaled independently.

In summary, VoltStorage is a forward-thinking company that is contributing to the renewable energy revolution by providing efficient, sustainable, and cost-effective battery storage solutions.

Source: Dealroom company data

At a glance

Status
Acquired
Founded
2016
Headquarters
Munich, Germany
Employees
16
Open positions
None listed
Dealroom signal
62.0/100
Sub-industry
Clean Energy, Energy Providers, Energy Storage
Sector
Energy, Solar Energy, Battery, Spinout, Sustainable Development Goals, Climate Tech, Stationary Energy Storage, Novel Energy
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

10 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
ACQUISITION✓Exit Feb 2026 $0 — ESS ↗
DEBT✓Debt Jul 2023 $33M — European Investment Bank ↗
Showing the latest 2 of 10 recorded eventsBook a demo for the full funding history →

Financials

Revenue, earnings and profit over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

Company filings, research estimates and Dealroom dataBook a demo for the full financial model →

Growth signals

VoltStorage website traffic

Latest recorded traffic for VoltStorage is 1.5K monthly website visits, down 46.4% over the last three months. VoltStorage's team declined 69.8% over the past year.

Latest monthly visits1.5K 3-month web change-46.4% 1-year team growth-69.8%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

CompanyHeadquartersStatusEmployeesTotal fundingValuation
VolterionDevelops and manufactures redox-flow battery stacks and systems for commercial bulk energy storage of renewable energy sources at lowest cost of storage Dortmund, Germany Operational 16 $18M $44M
AltrisDevelops a new sodium-ion battery cathode material that is made entirely of abundant and environmental materials Uppsala kommun, Sweden Operational
NAWAHInnovative, economically competitive, reliable and environmentally friendly Ultra-Fast Carbon battery and applied nanotechnology Voiron, France Closed
EnerpolyA next-generation energy storage technology company pioneering rechargeable zinc-ion battery chemistry Sigtuna kommun, Sweden Operational
Skeleton TechnologiesGlobal technology leader in supercapacitor energy storage, enabling electrification and reducing CO2 emissions Tallinn, Estonia Operational
AquaBatteryAquaBattery's patented membrane stack technology uses seawater for energy storage and discharge. The company's aim is the growth of renewable energy technologies and stop the use of toxic materials Alphen aan den Rijn, Netherlands Operational
ElestorElestor provides a cost-effective large-scale stationary electricity storage solution (LDES) based on flow battery technology, using low-cost materials and patented design Arnhem, Netherlands Operational
SylfenRendering decentralized renewable energy productions reliable, thanks to hydrogen storage Le Cheylas, France Operational
Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

17 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed6 investors entered at this stage

  • SOSV
  • Hax
  • Smart Energy Innovationsfonds
  • European Innovation Council
  • EIT Climate KIC
  • Wiwin

Series A4 investors entered at this stage

  • Bayern Kapital
  • Korys
  • InnoEnergy
  • Matthias Willenbacher

Series B and later2 investors entered at this stage

  • Cummins
  • European Investment Bank

Other known investors5 additional known investors

  • ESS
  • Technical University Munich
  • Kopa Ventures
  • LMU Entrepreneurship Center
  • Unreasonable Group
Team profiled 14 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 5 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇩🇪 Germany92.9%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about VoltStorage on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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