Hornsea 1 - Heron & Njord — United Kingdom
Wind power plant in England, United Kingdom. Approximate location 53.6815, 1.4207.
WindEnglandUnited KingdomOffshore hard mount
Hornsea 1 - Heron & Njord is a 1,200 MW wind power station in England, United Kingdom. It is operated by Orsted (formerly Dong Energy). Based on its capacity (estimated), it can supply roughly 1.0 million homes (estimated). It ranks #39 of 2,860 United Kingdom power plants by installed capacity. Commissioned in 2019, it is around 7 years old — recently built. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, wind supplies about 29.4% of United Kingdom's electricity; the national grid averages 217 gCO₂/kWh (64.4% low-carbon) (2025).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GBR2001034.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 1,200 MW, Hornsea 1 - Heron & Njord is well above the median wind plant in United Kingdom (10 MW). Technically it is described as Offshore hard mount. Wind turbines convert moving air into electricity; output is variable and site-dependent, and modern turbines deliver some of the lowest-cost new generation on many grids.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Key facts
- Share of United Kingdom wind capacity
- 5.0% of 23,763 MW across 779 plants in this dataset
- Age among peers
- 319 of 334 dated wind plants in United Kingdom are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Capacity vs largest wind plants in United Kingdom
Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by Orsted (formerly Dong Energy). All plants by this company →
Climate zone & how it works
This wind plant converts the kinetic energy of wind into electricity through turbine rotors. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 53.7°N — which shapes how much energy it can produce and how its output varies through the year.
Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).
Site climate & environmental severity
This site sits in a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with humidity / wetness the leading environmental stress.
Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.
How it compares & nearby plants
The #1 largest wind power plant of 779 in United Kingdom by capacity.
United Kingdom has 779 wind power plants in this dataset, together about 23,763 MW of capacity.
Nearby power plants
- Sheringham Shoal BMU 1 & 2 · Wind · 317 MW · England
- Humber Gateway · Wind · 219 MW · England
- Race Bank (Phase 1) · Wind · 286.5 MW · England
- Lincs · Wind · 270 MW · England
- Dudgeon East · Wind · 402 MW · England
- Inner Dowsing · Wind · 97 MW · England
Location
Coordinates 53.6815, 1.4207 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is Hornsea 1 - Heron & Njord?
Hornsea 1 - Heron & Njord is a 1,200 MW wind power plant in England, United Kingdom, commissioned in 2019.
Who operates Hornsea 1 - Heron & Njord?
Hornsea 1 - Heron & Njord is operated by Orsted (formerly Dong Energy).