Energy storageLSE: GRID
Gresham House Energy Storage Fund
62Credible ContributorLondon, UKFounded 20180 followers
greshamhouse.com/real-assets/energy-transition-investment/gresham-house-energy-storage-fund-plc/UK's largest listed fund investing in utility-scale battery energy storage systems, operating over 1 GW of BESS capacity across Great Britain and internationally.
Green Score
- Greenwashing risk
- low
- 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.
Deploying >1 GW of operational BESS capacity that stores excess renewable energy and reduces reliance on fossil-fuel peaking plants is a structurally significant and genuine climate contribution, though the fund itself does not publish independently verified avoided-emissions figures.
Decarbonization & Targets20%32
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 and no CDP disclosure found; Gresham House references TCFD adoption and a Sustainable Investment Policy but these are process commitments, not quantified science-based climate targets, and no net-zero pathway with measurable interim milestones has been independently validated.
ESG & Operations15%52
Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.
The fund holds an LSE Green Economy Mark and applies a ten-theme Sustainable Investment Framework with pre- and post-investment ESG monitoring, but supply-chain risks around battery mineral sourcing are acknowledged as still evolving, labour/social practices at project level are not publicly disclosed in detail, and the manager's ESG processes are audited internally rather than by a fully independent third party.
Transparency & Verification15%55
Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.
Annual Reports include TCFD disclosures, MW/MWh capacity metrics verified against grid-connection agreements, and a Sustainable Investment Report, but quantified avoided-emissions figures are based on a single carbon-intensity methodology without independent third-party assurance, and there is no CDP questionnaire submission or audited sustainability KPI set.
Integrity15%72
Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.
No pollution incidents, fossil-fuel lobbying, or governance scandals found; the principal controversy is financial — a sustained share-price discount to NAV (>30%), suspended dividends in 2024, a £110 million swing to a net loss in 2023, and a three-year recovery plan underway — which reflects operational and market risk rather than ethical misconduct.
Why it's on ClimateTicker
Gresham House Energy Storage Fund (GRID) is the UK's largest listed fund deploying utility-scale BESS, a genuine physical enabler of renewable integration that displaces fossil 'peaker' plants and provides real-time grid balancing services. The core business is authentically climate-positive — more storage capacity directly reduces curtailment of wind and solar and lowers the call on gas. However, the fund itself carries no SBTi-validated targets, lacks CDP disclosure, and its supply-chain ESG (battery mineral sourcing, end-of-life recycling) remains a policy commitment rather than a verified programme.
Commitments & Certifications
Controversy & Greenwashing Watch
The manager acknowledges supply-chain sustainability (mineral sourcing, Uyghur Forced Labour Prevention Act exposure) as a key risk requiring policy updates, but no independently verified responsible-sourcing programme has been published as of 2024.infyos.com
Very high 'skip rates' by the UK National Energy System Operator (NESO) — bypassing available BESS in favour of gas dispatch — materially reduced revenues and demonstrated that the climate benefit of deployed capacity is currently being partially blocked by market design failures.theaic.co.uk
GRID's share price fell more than 60% from its 2022 peak, the fund swung to a £110 million loss in 2023, suspended its dividend in early 2024, and shares remained at a ~34% discount to NAV as of mid-2026, reflecting structural weakness in UK BESS merchant revenues.energy-storage.news
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