Energy storageLSE: GRID

Gresham House Energy Storage Fund

62Credible Contributor

London, 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

62/100
Credible Contributor
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.

enablerGRID raises listed-equity and project-debt capital, acquires and operates utility-scale BESS sites across Great Britain, and earns revenues from frequency-response contracts, wholesale energy trading, capacity-market agreements, and tolling arrangements with third-party optimisers such as Octopus Energy.

Commitments & Certifications

Controversy & Greenwashing Watch

lowBattery supply-chain ESG risks unresolved

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

lowNESO skip-rate underutilisation of BESS

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

mediumSustained NAV discount and dividend suspension

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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