Battery storage · United Kingdom
Castleford ESS
Operator HARMONY CAS LIMITED · Owner Harmony Cas Limited
Operational50 MWData checked 12 November 2026
Watch this siteIts outage notices and incidents, what it earns and where it ranks, in your workspace and by email. 7 days free, no card.
Castleford ESS is a 50 MW battery storage site on the edge of Knottingley, Wakefield, United Kingdom. Its status in the public dataset is operational. There are 61 other energy sites within 10 km, 25 of them battery storage sites (hybrid battery and solar sites included). The register holds no incident at this site. It holds 14 incidents at battery storage sites (hybrid battery and solar sites included) in the United Kingdom, and 197 worldwide.
Get an email when Castleford ESS changes
Free. An email when its status changes: a planning decision, building starting, going live or closing. And each Monday, battery storage incidents in the United Kingdom. No account needed; unsubscribe in one click.
Confirm your email and every battery storage incident on the register arrives at once as a spreadsheet (CSV), free.
Get a free sample brief Three complete verified records and the incidents-per-GW table, by email within a minute.
We will also email you about the register's paid records and plans, at most once a week and three times in all. You can stop these at any time. By signing up you agree to the privacy policy.
Members see the sites and incidents around this one, and every record behind them.
The site
- Technology
- Battery storage (Battery)
- Capacity
- 50 MW
- Capacity figure from
- Capacity Market register (EMR Delivery Body)
- Status
- Operational (Capacity Market unit, delivery year 2026)
- Operator
- HARMONY CAS LIMITED
- Owner
- Harmony Cas Limited
- Location
- Wakefield, WF11 8SF, United Kingdom
View on OpenStreetMap. The larger dot is this site; the others are sites within 40 km.
Incidents on the register at this site
None found. The register holds no published incident that names Castleford ESS. If you know of one, report it (confidential reports are anonymised).
Own, insure or lend to this site or others like it? A portfolio safety record checks every site in a list against the register, free; the paid records add the site, operator, cause, downtime and loss behind each incident.
Questions
- Has Castleford ESS had a fire or other incident?
- None is on the register as of 13 November 2026. The register holds no published incident that names Castleford ESS; it holds 14 incidents at battery storage sites (hybrid battery and solar sites included) in the United Kingdom.
- What is the status of Castleford ESS?
- Operational, in the public dataset.
- Where is Castleford ESS?
- On the edge of Knottingley, Wakefield, United Kingdom (postcode WF11 8SF).
The dataset. The register adds only the incidents and the counts. Nearest town: GeoNames (CC BY 4.0).