Regulated
- Risk level
- Highest
- Risk-return
- Bad
- Start from
- €100
Funding has closed. The page stays up for reference; similar open projects are below.
V21 GmbH
Germany
The thermal insulation of the future – we've flattened the thermos flask.
Key figures
- Estimated return
- 3.03–5.49×
- platform's estimate
- Valuation
- €2,750,000
- Start from
- €100
- Target
- €1,000,000
What you own, how it can pay off, and when
How can it pay off?
The platform estimates 3.03–5.49×
Usually only if the company is sold or listed. Estimates are the platform's own claims.
Capital at risk. Most startups fail; estimates are the platform's own claims. Shares are hard to sell before an exit.
Would AI invest?
AI 61 MediumOur AI gives this project 61 out of 100: Medium. How the AI score works
Information, not personal investment advice. The AI score rates the documents the platform publishes, can be wrong, and does not predict returns.
AI review
AIV21 GmbH
ZeroCoreVac — coreless stainless-steel vacuum insulation panels ("the thermos flask, flattened")
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Sector / stage |
DeepTech / GreenTech hardware (high-performance vacuum thermal insulation), licensing-led — pre-seed / early stage (TRL 5 prototype, pre-revenue) |
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Headquarters |
Hamburg, Germany (HRB 161001) |
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Raise |
Up to EUR 1,000,000; minimum threshold EUR 100,000; minimum ticket EUR 100 |
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Instrument |
Profit-participating subordinated loan (partiarisches Nachrangdarlehen) — NOT equity |
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Platform |
FunderNation |
AI Score
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AI Score |
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61 / 100 |
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⭐ Moderate |
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ℹ️ This is not investment advice. The purpose of this overview is to help potential investors preselect crowdfunding projects quickly without making a final investment decision. Before investing, the final selected project should be reviewed in detail based on the information provided by the company on the respective crowdfunding platform. AI can make mistakes, so you need to double-check data. |
Company description
V21 GmbH, founded in Hamburg in December 2019, develops ZeroCoreVac — a vacuum insulation panel made of two thin stainless-steel sheets held apart by high-strength aramid fibres, evacuated and welded so that almost no heat passes through, working on the same principle as a thermos flask but in a flat form. The company reports a thermal conductivity below 0.008 W/mK, roughly 3 cm of panel matching the insulating performance of up to 25 cm of mineral wool, plus non-combustibility, mechanical robustness (up to 60 t/m²) and a 50+ year lifespan.
The business model is licensing-led: V21 makes small batches at its Hamburg R&D facility for pilot projects now, and from 2027 plans to license production partners who pay a per-square-metre fee. Stated pilot partners are ConRail (refrigerated containers), MobilConcept (modular buildings) and EcoWorks (façade renovation). Initial target markets are modular/container construction and serial façade renovation, with later expansion to refrigerated logistics, seasonal heat storage, EV battery thermal management and conventional new-build.
The technology has been independently tested by Fraunhofer ISE (Freiburg) at the prototype stage and supported by a DBU Green-Startup grant of EUR 125,000. The product is currently at TRL 5 (a working prototype validated in a relevant environment); this raise funds development toward TRL 7.
Potential returns
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Company-provided — V21 states its own return targets, so the platform's default ~10x educational benchmark does not apply here. |
| Target basis | Target case: 33% internal rate of return (IRR) per year over a ~5-year period, equivalent to a 5.49x return on the amount invested. |
| Base case: 21% IRR per year, equivalent to 3.03x. | |
| IRR means the average annual percentage growth rate of the investment if everything goes to plan. These are company projections, not guarantees, and are offset by the explicit risk of losing the entire amount invested. | |
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Return horizon |
Loan term to 30 April 2031 (~5 years). If no sale of the company happens before then, the principal is repaid in 12 equal monthly instalments from 1 May 2031. |
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What drives the return |
Because this is a loan, the return comes from three contractual interest components tied to the company's profit, its end-of-term value, and any sale of the business — not from owning shares. See "Instrument & investor terms" below. |
Path to target — company methodology
V21's headline returns are set by the company, not derived from a sector heuristic. The company presents two scenarios from its financial plan, both assuming positive business development:
The return is realised through the loan's interest mechanics rather than a share sale. Annual "success interest" depends on the company posting a net profit; "bonus interest" at the end of the term depends on the company's value at that point (measured by the most recent financing round within 12 months, or otherwise by the last year's revenue); and "exit interest" applies only if more than 50% of the company or its key assets are sold during the term. On the company's own figures, the base case shows losses through 2028 and the target case shows a first profit only in 2027 — so most of the projected return depends on the value and exit components, not on annual interest in the early years.
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Comparable exits |
None provided in the materials. No third-party valuation benchmark for V21 was found, although comparable vacuum-insulation companies exist (va-Q-tec, Vaku-Isotherm, Panasonic, Concept Group, Elevate). |
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Milestones (company-stated) |
2021–2022: ZeroCoreVac concept developed; patents stated as granted in EU, USA, Japan, and China. |
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2023: first TRL 5 prototype built; measured by Fraunhofer ISE. |
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2024: industry/research partnerships; recognition in funding programmes (DBU Green-Startup, EIC Seal of Excellence, Fraunhofer Way4Better, EUSAFE). |
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This round: develop technology from TRL 5 to TRL 7; run first pilot projects; start licence revenues from 2027. |
Valuation
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The ask |
Up to EUR 1,000,000 via a profit-participating subordinated loan; minimum threshold EUR 100,000; minimum ticket EUR 100; maximum 10,000 loans. |
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Pre-money valuation |
EUR 2,750,000 (set by the company, before the campaign). Maximum post-campaign basis up to EUR 3,750,000 if fully subscribed. |
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Participation b… |
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Information, not personal investment advice. The AI score rates the documents the platform publishes, can be wrong, and does not predict returns.
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