Maerdy (, ) is a village and community (and electoral ward) in the county borough of Rhondda Cynon Taf, and within the historic county boundaries of Glamorgan, Wales, lying at the head of the Rhondda Fach Valley.
The village developed around Mardy Colliery, established in 1875, which became central to the community until its closure in 1990. Maerdy gained national prominence during the early 20th century as a centre of miners' militancy and communist politics, earning the nickname "Little Moscow" due to the radical stance of its miners' lodge. The community was home to the Maerdy Workingmen's Hall and Institute, built in 1905, which served as the social, cultural, and educational heart of the village for over a century until its demolition in 2008.
Today, with a population of 3,160, Maerdy is a post-industrial community that commemorates its mining heritage through several memorials whilst facing the challenges of economic regeneration.
Etymology
The name "Maerdy" derives from Welsh maerdy, meaning "steward's house" (maer + dy). In medieval Wales, a maer was a royal or manorial steward who administered demesne lands. The local pronunciation "Mardy" reflects the Gwentian dialect form. The colliery's development accelerated after connection to the Taff Vale Railway's Maerdy Branch in 1877, enabling coal transport to Cardiff docks.
The 1885 mining disaster
On 23 December 1885, Maerdy Colliery suffered a major explosion that killed 81 miners. The disaster occurred at approximately 2:40 pm when 750 men were underground, with 63 deaths attributed to suffocation and 18 to burns and violence. The memorial stone was laid on 13 March 1905 by Dr Sylvanus Glanville Morris.
The Hall was gutted by fire in 1922 but was subsequently rebuilt. By the early 2000s, the building had fallen into severe disrepair. Following a survey that estimated restoration costs would exceed £6 million, the Communities First Partnership concluded that demolition was the only viable option. The Welsh Development Agency funded the demolition, which was completed in 2008. Under Horner's influence, the miners' lodge developed strong ties with the Communist Party of Great Britain and earned the nickname "Little Moscow".
Maerdy today
thumb|Lluest Wen Reservoir, located on the hills above Maerdy, providing water supply and electricity to the [[Rhondda Fach .]]
Today, Maerdy is a post-industrial community with a population of 3,160 as of the 2011 census. The former colliery site now houses the Avon Group factory, which manufactures rubber components for aerosol cans and vehicle gaskets and seals.
The hills surrounding Maerdy have become a significant location for renewable energy development, symbolising the area's transition from coal mining to clean energy generation. An operational 24MW wind farm with eight Siemens turbines is located on Mynydd Maerdy.
Additional wind energy projects are planned for the area. The Welsh Government has proposed the Carreg Wen wind farm as part of its renewable energy strategy, which would feature 18 turbines between Aberdare and Maerdy. These developments contribute to the Welsh Government's target of generating renewable electricity to meet 100% of Wales's needs by 2035.
Community facilities include Maerdy Community Primary School and Maerdy Park. The Community Archives Wales scheme operates a local archive group that preserves the area's historical photographs and documents.
However, a 2018 review of electoral arrangements by the Local Democracy and Boundary Commission for Wales would see Maerdy ward merged with neighbouring Ferndale. The proposals would take effect from the 2022 council elections.
Transport
Between 1849 and 1856, the Taff Vale Railway opened the Maerdy Branch from , including a station at . Passenger services were withdrawn in 1964, and the line closed completely in August 1986 after coal from Mardy Colliery was raised through Tower Colliery.
In 2005, RCT council constructed the A4223 Porth and Lower Rhondda Fach Relief Road (Porth Bypass) follows the old railway line through Ynyshir, past Wattstown and on to Pontygwaith. The northern section forms a branch to the Taff Trail cycleway.
Community Archives Wales
A group of interested residents takes part in the Maerdy Archive Group which is affiliated with the Community Archives Wales scheme to teach local residents how to upload articles of their community's history. The group has a large collection of photographs and ephemera about the development and expansion of the Maerdy area.
In 2002 the village was designated as a Communities First Area and a Partnership formed.
Notable people
:See :Category:People from Maerdy
George Baker (1936–2024) was a Welsh international footballer who played as a forward for Plymouth Argyle and was part of the Wales squad for the 1958 FIFA World Cup.Originally a winger converted to a deep-lying centre-forward, he made 83 appearances for Plymouth Argyle between 1954 and 1959.
Frank Owen of Pentre Road was killed in action at the Battle of Brunete in July 1937 whilst fighting fascism with the International Brigades during the Spanish Civil War.
Lynn Howells (born 1950) is a Welsh rugby union coach who served as assistant coach to Graham Henry with the Wales national rugby union team during the 1999 Rugby World Cup. He coached major clubs including Pontypridd, Cardiff, and the Celtic Warriors, before serving as head coach of the Romania national rugby union team from 2012 to 2018.