Scottish company making compact heat batteries using patented phase-change materials, storing up to four times more energy than a conventional hot water tank of the same size.
Green Score
- Greenwashing risk
- low
- Data confidence
- medium
- Method
- how it is calculated
Climate Impact & Solution35%78
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 product demonstrably cuts residential heating emissions — an independently documented 4.6 kilotonnes of CO₂ avoided by 2021 through reduced heat loss alone, and the technology integrates with heat pumps and renewables to replace fossil-fuel heating; impact is real but still small relative to the scale of the problem.
Decarbonization & Targets20%22
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-validated targets, CDP disclosure, or a published net-zero roadmap with quantified milestones; the company states a mission to 'tackle climate change and reach net zero' but this is an aspiration, not a credible science-based commitment.
ESG & Operations15%38
Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.
Sunamp employs ~80+ people, has worked with housing associations on fuel poverty (a positive social dimension), and designs products for a 50-year lifespan and circular lifecycle, but there is no public ESG report, governance disclosures, or supply-chain audit covering its own operational footprint.
Transparency & Verification15%30
Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.
Impact claims are partly corroborated by University of Edinburgh research and third-party bodies (Energy Systems Catapult, VIBES awards), but Sunamp publishes no standalone sustainability or ESG report, no independently verified Scope 1/2/3 emissions data for its own operations, and no CDP or equivalent formal disclosure.
Integrity15%80
Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.
No material controversies, litigation, fossil-fuel lobbying, pollution incidents, or governance scandals were identified in public sources; the company has received credible institutional backing including the Scottish National Investment Bank and the King's Award for Innovation.
Why it's on ClimateTicker
Sunamp makes a genuine climate contribution: its phase-change-material heat batteries reduce building heating emissions by enabling renewable energy storage and cutting standby heat loss, with independently documented CO₂ reductions of 4.6 kilotonnes by 2021 from installed units alone. The core product is a real decarbonisation tool, not a peripheral green add-on. However, the company is a privately held SME with limited public ESG disclosure, no evidence of SBTi-validated targets or CDP participation, and most impact claims rely on university-linked studies rather than independent third-party audits.
Commitments & Certifications
Community Reviews
No reviews yet. Be the first to share your experience!
ClimateTicker assessments are evidence-based research, not investment advice. Companies and readers can challenge a factual claim or submit better evidence.