Sunfire

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.

Sunfire's core business — manufacturing high-efficiency electrolysers for green hydrogen production — is a direct enabler of industrial decarbonisation in hard-to-abate sectors, with SOEC technology achieving up to 84% electrical efficiency and an 800+ MW order backlog confirming real commercial deployment; however, end-use climate impact is contingent on customers procuring genuinely renewable electricity, an additionality risk not addressed publicly by Sunfire.

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

No evidence of SBTi validation, CDP disclosure, or a published net-zero roadmap for Sunfire's own operations was found in public sources; the company's sustainability narrative centres on its product's impact rather than its own measurable emissions reduction targets, which is a material gap for an investor-grade assessment.

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

Sunfire employs over 500 people in Germany and Switzerland, has institutional backing from sustainability-focused investors (Planet First Partners, Blue Earth Capital, Amazon Climate Pledge Fund), and its EIB loan includes an Environmental and Social Data Sheet; however, no independently verified ESG or social reporting, supply chain due diligence disclosures, or labour practice data are publicly available.

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

Sunfire publishes detailed press releases on funding milestones, project commissions, and technology performance claims (e.g. 84% SOEC efficiency), but there is no publicly available annual sustainability report, audited GHG emissions inventory for its own operations, third-party-verified lifecycle assessment of its electrolysers, or CDP response — disclosure quality is well below what is expected of a company at this funding scale.

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

No material controversies, litigation, pollution incidents, fossil-fuel lobbying activity, conflict-zone involvement, or governance scandals involving Sunfire were identified in public sources; the company spun off its fuel cell division in 2024 to sharpen its electrolysis focus, suggesting disciplined strategic governance.