Llyn Alaw

United Kingdom

Llyn Alaw (which means Lily Lake in English) is a reservoir near the town of Amlwch on the island of Anglesey.

Installed Capacity


No. of turbines


Turbine type

Bonus B44/600

Expected P50 energy yield


Annual house-hold power equivalent

17,699 homes*

The reservoir was created by the flooding of marshlands in 1966 and it supplies 35 million litres of water a day to the northern half of the island. Llyn Alaw Wind Farm is situated to the north of the small village of Llanbabo which is close to the reservoir’s eastern shore.

Construction work on Llyn Alaw Wind Farm began in 1996 and it opened in October 1997. The site, which was originally developed by West Coast Energy, has 44 turbines rated at 600kW, giving the wind farm an installed capacity of 20.4MW and the ability to generate enough energy to power 17,699 homes*.

Any questions relating to this wind farm should be directed to:

*Based on the Installed Capacity x Department for Energy Security and Net Zero (DESNZ) "all wind" load factor expressed as a fraction of 1^ x number of hours in a year (8,760 hours) / Average Annual Domestic Electricity Consumption (MWh)^^

^DESNZ's long-term average (5-years, 2018-2022) load factor for "all wind" (32.08%) expressed as a fraction of 1 (0.3208). Source for capacity factors is Digest of United Kingdom Energy Statistics (DUKES) published annually by DESNZ.

^^Annual GB Average Domestic Consumption Values from DESNZ (3,239kWh).

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