The Nixon Company established their Gas Company at Navigation Yard Mountain Ash and this and another company the Penrikyber Gas and Water Co. were taken over by the Board of Health in 1887. A new works was established at Penrhiwceiber providing gas for Abercwmboi and Ynysybwl. The new gasworks were described in a South Wales Echo article from the 10th April 1888” The new gas works at Penrhiwceiber are fast approaching completion. They are situated on a strip of land bounded on the one side by the Cynon River, and the Taff Vale Railway (T.V.R.) on the other, at about 300 yards from the railway station. The various buildings connected with the works are divided into three sections. In entering the works by the new road, we first observe the foreman's cottage, adjoining this being the governor house, which contains two governors, a 7 inch and 9 inches, for governing the distribution of gas to Ynysybwl, Mountain Ash, and Penrbiwceiber. Passing on we come to the central block of buildings, which consists of retort house, coal stores, blacksmith's shop, manager and clerk's offices, and storeroom, &c. The retort house is a substantial structure, well lighted and ventilated, containing at present 18 retorts, but the building is so arranged as to be easily capable of extension. The coal is brought along the siding of the T.V.R. over the weighbridge into the coal stores. The gas passes from the retort house into the condensers, and from there into the exhauster house, provision being left for another exhauster. The exhauster-house forms part of the end block of building, which also include boiler washer, purifying, and meter houses; also, lime shed. The purifying-house contains four purifiers, 10ft. square. The gas then passes through the station metre into the gasholder, which is telescopic. The diameter of the gasholder is 60ft. The various buildings, which are imposing and substantial, have been erected by Messrs Batchelor and Snowden. The apparatus required in the manufacture of gas, including the gasholder, have been supplied by Messrs R. and J. Dempster, of the Gas Plant Works, Newton Heath, Manchester; and the engineers were Messrs G. W. Stevenson and Son, of London. The works are expected to produce gas by the 1st July next (1889). They are capable of producing over 30,000,000 cubic feet of gas per annum. 1945 Works at "Penrhiwceiber". Annual gas production 46,535,000 from 4,354 tons of coal. CV 430 BThU, plant horizontals. D. T. Phillips, Engineer & Manager. Vested in the Wales Gas Board from the Mountain Ash UDC. The gasworks were visible on the 1898 to 1974 OS maps.