Energy · 2019

Gigawatt-scale offshore wind

Hornsea One reaches 1.2 GW with 7 MW turbines 120 km offshore.

Hornsea One, completed in 2019-2020, was the first offshore wind farm over 1 GW. Turbines grew from 0.45 MW at Vindeby to over 15 MW prototypes by 2023, with rotors wider than 230 m.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

Offshore wind farm 1991
HVDC transmission 1954

What it led to 1

Terawatt of wind 2023

Related measurements

The dashed line marks when it first worked.

Installed wind capacity Latest: 1.29k GW (2025) Source: Our World in Data

Wind electricity generation Latest: 2.71k TWh (2025) Source: Our World in Data

World electricity generation Latest: 31.8k TWh (2025) Source: Our World in Data