Energy Storage

Form Energy

52Mixed / Improving

Somerville, MA, USAFounded 2017Series E0 followers

formenergy.com

Develops low-cost, multi-day iron-air battery storage designed to keep the grid reliable as it shifts to wind and solar, storing energy for 100+ hours.

Green Score

52/100
Mixed / Improving
Greenwashing risk
low
Data confidence
medium
Method
how it is calculated
Climate Impact & Solution35%72

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.

The core technology — multi-day storage enabling grids to eliminate fossil-fuel backup during renewable droughts — has genuine and large potential avoided-emissions impact, but zero verified commercial deployments as of mid-2026 means impact remains theoretical rather than measured.

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 found; the company has not published a standalone sustainability or ESG report with verifiable emissions data, putting it well below the bar for climate-credible corporate disclosure.

ESG & Operations15%48

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

Form Energy has a community benefits agreement with Weirton, WV, educational partnerships, and worker-training commitments alongside its brownfield factory siting — positive social indicators — but two rounds of layoffs in under 12 months (March 2024 and early 2025) and the absence of published operational environmental data limit the ESG score.

Transparency & Verification15%32

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

Form Energy publishes press releases and project announcements but has released no audited sustainability report, no Scope 1/2/3 emissions inventory, no CDP questionnaire response, and no third-party verification of any environmental claim, making independent assessment of its operational footprint impossible.

Integrity15%72

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

No material pollution incidents, fossil-fuel lobbying, conflict-zone involvement, or governance scandals identified; the main integrity concern is missed public commitments (commercial production by end-2024) and limited communication with press and analysts, which introduces credibility risk rather than ethical violation.

Why it's on ClimateTicker

Form Energy's iron-air battery technology — storing electricity for 100+ hours using abundant iron, air, and water — directly targets the 'dark doldrums' problem that forces fossil-fuel peakers onto grids relying on wind and solar. The underlying climate impact is real and large-scale if commercialized, but as of mid-2026 the company has missed its own 2024 commercial-production deadline and has no confirmed deployed commercial systems, meaning the thesis remains a well-funded promise rather than a verified outcome. Investors should treat this as high-potential but pre-revenue climate infrastructure with meaningful execution risk.

mitigationForm Energy designs and manufactures long-duration iron-air battery storage systems sold or contracted to electric utilities and grid operators; revenue will derive from hardware sales and potentially long-term service agreements, but the company has not yet publicly reported commercial revenue.

Controversy & Greenwashing Watch

mediumMissed 2024 Commercial Production Deadline

Form Energy publicly stated it aimed to begin commercial battery production by end-2024; as of mid-2025 no commercial deliveries had been confirmed, with analysts noting the company had released no press releases in 2025 and local media reported only layoffs at the Weirton facility.keepcool.co

lowSecond Restructuring Round — Early 2025

Less than a year after the March 2024 layoffs, Form Energy announced a further workforce reduction of fewer than 5% at its Weirton factory, citing broader climate-tech sector headwinds under the current U.S. administration.crunchbase.com

low15% Workforce Reduction — March 2024

Form Energy laid off approximately 200 employees (15% of staff) in March 2024 amid cost-reduction and strategic-realignment pressures, followed by a second smaller restructuring in early 2025.sunsethq.com

Funding

Series E · Led by TPG Rise Climate
USD 405.0M10/4/2022

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