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Battery storage planning in Cardiff
Cardiff has decided 4 battery storage schemes and approved 100% of them, taking a median of 4.1 months to decide. Consented capacity: 1,094 MW. 5 applications still awaiting a decision.
⚠️ Small caseload (4 decided). Percentages here move a lot with one more decision — read them as indicative, not as a reliable rate.
How Cardiff compares
Against the 137 UK authorities with 5+ battery storage decisions, Cardiff sits in the 73rd percentile for approval rate (8 points above the England average) and the 72nd percentile for speed.
Decisions by year
Battery storage decisions by the year the decision was issued (Renewable Energy Planning Database). Withdrawn and still-undecided applications are excluded, so a short bar can mean a quiet year rather than a strict council.
Every recorded scheme (9)
| Scheme | MW | Status | Decided |
|---|---|---|---|
The Wales Millennium Centre, Bute Place - Battery Energy Storage Newton Energi Limited · 26/00421/FUL | 0.5 | Application Submitted | 2026-03-04 |
Gabalfa Interchange - Micro Energy Storage AMP Clean Energy · 26/00147/FUL | 0.2 | Application Submitted | 2026-01-26 |
Llanedeyrn Drive - Micro Energy Storage Project AMP Clean Energy · 26/00087/FUL | 0.2 | Application Submitted | 2026-01-19 |
Rover Way, Splott - Energy Park & Data Centre Latos Cardiff Limited · 24/00624/FUL · 12.8 mo to decide | 1000 | Awaiting Construction | 2025-04-15 |
Panasonic Manufacturing, Pentwyn - BESS Panasonic Manufacturing UK · 24/00924/FUL · 2.2 mo to decide | 1.08 | Under Construction | 2024-06-27 |
Ipswich Road, Cardiff - Battery Storage Green Frog Power 214 Limited · 23/02817/FUL · 4.1 mo to decide | 93 | Awaiting Construction | 2024-04-08 |
Tramshed, Pendyris Street - Solar Panels & Battery Storage Tewdric Energy · 22/02796/FUL | — | Application Submitted | 2022-11-24 |
Ipswich Road, Cardiff - Battery Storage Green Frog Power 214 Limited · 21/02369/MNR | 50 | Revised | 2021-10-05 |
Flat Holm Microgrid Project Wind & Sun | — | Operational | — |
Does Cardiff approve battery storage schemes?
Yes — of the 4 battery storage schemes Cardiff has decided, 100% were approved (4 granted, 0 refused). The UK-wide rate for battery storage is 92%. Note this is a small caseload, so treat the percentage as indicative rather than statistically robust.
How long does a battery storage scheme application take in Cardiff?
The median time from application to decision is 4.1 months, against a UK median of 6 months for battery storage. That is measured between the submission and decision dates recorded in REPD, so it reflects the whole determination period including any extensions.
How much battery storage capacity has Cardiff consented?
1,094 MW has been consented across 4 approved schemes. A further 5 applications awaits a decision.
Other technologies in Cardiff
Source: Renewable Energy Planning Database (REPD), Department for Energy Security and Net Zero, Open Government Licence v3.0 — 2026 Q1 extract. Approval rate is over decided applications only (approved ÷ approved+refused); withdrawn and undecided schemes are excluded. A permission later expired still counts as approved because consent was granted. REPD covers schemes of roughly 150 kW and above, is published quarterly, and does not record refusal reasons — so nothing here explains why a scheme was refused. Screening context for site selection, not planning advice.
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