Energy storageAIM: IES

Invinity Energy Systems

53Mixed / Improving

London, UKFounded 20200 followers

invinity.com

Global manufacturer of vanadium flow batteries (ENDURIUM and VS3 product lines) for commercial and utility-scale stationary energy storage, with operations across the UK, US, Canada, China, and Australia.

Green Score

53/100
Mixed / Improving
Greenwashing risk
medium
Data confidence
medium
Method
how it is calculated
Climate Impact & Solution35%82

Does the core business genuinely avoid or reduce emissions, or build climate resilience? Share of revenue that is actually 'green'. Fossil-dependent models score low.

Vanadium flow batteries directly enable greater renewable energy penetration by providing long-duration, non-degrading storage that smooths intermittency of solar and wind — a high-quality, durable mitigation technology with a 25+ year operational life and no thermal runaway risk, though vanadium mining upstream carries environmental costs not publicly quantified by the company.

Decarbonization & Targets20%18

Credible, science-based targets (SBTi), a real net-zero plan with progress to date, and CDP disclosure — not just a dated press release.

No SBTi-validated targets, no CDP disclosure, and no publicly available net-zero roadmap with quantified milestones were found; the company references broader net-zero policy ambitions in UK parliamentary documents but has made no formal science-based commitment of its own.

ESG & Operations15%35

Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.

No standalone ESG or sustainability report with third-party assurance has been identified; the 2024 Annual Report is the primary disclosure vehicle but does not publish Scope 1/2/3 GHG data, labour metrics, or supply-chain due diligence disclosures in a structured, standards-aligned format.

Transparency & Verification15%28

Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.

Disclosures are limited to AIM-required regulatory filings and investor presentations; there is no GRI/SASB-aligned sustainability report, no independent third-party verification of environmental claims, and no quantified lifecycle emissions data published for its products, making it difficult to verify marketed climate benefits.

Integrity15%75

Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.

No material controversies, pollution incidents, fossil-fuel lobbying, or governance scandals were identified in public records; the company is loss-making and faces commercial execution risks (deal delays, revenue recognition uncertainty), but these are disclosed transparently in regulatory filings.

Why it's on ClimateTicker

Invinity's vanadium flow batteries are a genuinely climate-positive technology, enabling long-duration storage that allows renewable energy to displace fossil-fuel generation — a direct mitigation play. However, the company is pre-profitability, small-cap, and publishes no independently verified ESG report, no SBTi-validated targets, and no CDP disclosure, meaning investors must rely almost entirely on self-reported marketing claims. The technology thesis is strong; the institutional sustainability governance is nascent to absent.

mitigationInvinity sells utility-grade vanadium flow battery systems (ENDURIUM and VS3 product lines) to commercial, industrial, and grid-scale customers globally, generating revenue from hardware sales and project delivery, supplemented by government grants (including UK DESNZ programmes).

Controversy & Greenwashing Watch

lowPersistent operating losses and revenue delays

Invinity has been consistently loss-making since formation, with a £10m H1 2025 net loss and material deal delays in 2024 that compressed revenues, raising going-concern-adjacent execution risk for investors despite no formal going-concern disclosure.otcmarkets.com

lowNo science-based targets or verified ESG reporting

Despite operating in a climate-critical sector and marketing its products as enabling net-zero, Invinity has filed no CDP response and holds no SBTi commitment or validation, creating a gap between marketing and verifiable sustainability governance.sciencebasedtargets.org

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