Upper Boat power station

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Upper Boat power station
Upper Boat power station
CountryWales
LocationPontypridd, Rhondda Cynon Taff
Coordinates 51°34′34″N03°18′07″W / 51.57611°N 3.30194°W / 51.57611; -3.30194
StatusDecommissioned and demolished
Construction began1900, 1922
Commission date 1904, 1924
Decommission date1972
Owner(s)South Wales Electrical Power Distribution Company
(1922–1948)
British Electricity Authority
(1948–1955)
Central Electricity Authority
(1955–1957)
Central Electricity Generating Board
(1958–1972)
Operator(s)As owner
Thermal power station
Primary fuelCoal
Turbine technologySteam turbines
ChimneysMultiple
Cooling towers1
Cooling sourceRiver water and cooling tower
Power generation
Units operational1 × 18 MW, 1 × 25 MW, 1 × 20 MW, 3 × 30 MW
Make and modelParsons and English Electric
Nameplate capacity 155 MW
Annual net output 816 GWh (1946)
[ edit on Wikidata]

Upper Boat power station supplied electricity to the town of Pontypridd and the wider area from 1904 to 1972. The power station was developed in several stages firstly in 1902, then from 1924 to 1942. It was owned and operated by the South Wales Electrical Power Distribution Company until the nationalisation of the electricity supply industry in 1948. The station was decommissioned in 1972 and was demolished in 1976.

Contents

History

South Wales Electrical Power Distribution Company Act 1900
Act of Parliament
Royal Coat of Arms of the United Kingdom (variant 1, 1952-2022).svg
Parliament of the United Kingdom
Citation 63 & 64 Vict. c. cclxxxii
South Wales Electrical Power Distribution Company Act 1920
Act of Parliament
Coat of arms of the United Kingdom (1901-1952).svg
Parliament of the United Kingdom
Citation 10 & 11 Geo. 5. c. vi
Dates
Royal assent 20 May 1920
South Wales Electrical Power Distribution Company Act 1922
Act of Parliament
Coat of arms of the United Kingdom (1901-1952).svg
Parliament of the United Kingdom
Citation 12 & 13 Geo. 5. c. lxvii
Dates
Royal assent 20 July 1922
Text of statute as originally enacted

Upper Boat power station was built by the South Wales Electrical Power Distribution Company from 1902. The company was established by Parliament through the South Wales Electrical Power Distribution Company Act 1900 (63 & 64 Vict. c. cclxxxii). [1] The legal authority to undertake redevelopment was given by local acts of Parliament: the South Wales Electrical Power Distribution Company Act 1920 (10 & 11 Geo. 5. c. vi) [2] and the South Wales Electrical Power Distribution Company Act 1922 (12 & 13 Geo. 5. c. lxvii). [3]   The company also owned and operated Llynfi power station and generating stations at Abercarn, Caerphilly, Cowbridge, Llantwit Fardre, Panteg, and St. Mellons. [4]

The power station at Upper Boat (51°34'34"N 3°18'07"W) was adjacent to the Great Western Railway and the generating station had sidings for the delivery of coal. [5] The site was also adjacent to the River Taff which provided water for cooling. [5]

The foundation stone was laid on 30 April 1902. [6] Electricity was first generated in 1904. [7]

Equipment specification

The new (1924-42) plant at Upper Boat power station was installed in several phases: [8]

The plant comprised: [8]

The total evaporative capacity of the boilers was 1,754,000 lb/h (221 kg/s).

The total installed generating capacity was 155 MW, and the output capacity was 144 MW. [8]

Condensing water was taken from River Taff at 6.42 million gallons per hour (8.11 m3/s); there was 1 Film reinforced concrete cooling tower with a capacity of 2.25 million gallons per hour (2.84 m3/s). [8]

There was a 132 kV substation south east of the power station that provided the electricity connection to the national grid. Later a 275 kV substation was built south of the power station. [9]

Operations

By 1923 the station had a generating capacity of 14 MW, and sold 49 GWh of electricity. [10]

Soon after the commissioning of the new plant at Upper Boat power station the Electricity (Supply) Act 1926 (16-17 Geo. 5 c. 51) [11] was enacted. This established the Central Electricity Board (CEB) with a duty to identify high efficiency ‘selected’ power stations that would supply electricity most effectively; Upper Boat was designated a selected station. The CEB also constructed the national grid (1927–33) to connect power stations within a region. [12]

From about 1937 steam from the station was used to provide process and space heating to the nearby Treforest trading estate. [6]

The British electricity supply industry was nationalised in 1948 under the provisions of the Electricity Act 1947 (10-11 Geo. 6 c. 54). [13] The South Wales Electrical Power Distribution Company was abolished, ownership of Upper Boat power station was vested in the British Electricity Authority, and subsequently the Central Electricity Authority and the Central Electricity Generating Board (CEGB). [12] At the same time the electricity distribution and sales responsibilities of the South Wales Electrical Power Distribution Company were transferred to the South Wales Electricity Board (SWALEB).

Operating data

Operating data for the period 1946–72 is shown in the table: [8] [14] [15] [16]

Upper Boat power station operating data, 1946–72
YearRunning hours or load factor (per cent)Max output capacity  MWElectricity supplied GWhThermal efficiency per cent
194661.9 %150.6816.40719.81
Low pressure station
1954855859206.54013.67
1955838759150.84312.62
1956819159118.16711.44
1957830759130.76212.17
195845725968.19610.23
High pressure station
1954857785439.93524.05
1955861085542.77023.40
1956871085499.83223.52
1957766385343.26123.76
1958707485311.83723.18
Combined output
196112.8 %144161.50618.12
19629.8 %144123.98617.88
196314.03 %144223.00413.69
196717.3 %127192.14118.94
197211.6 %8077.39218.19

The less intensive use of the ‘low pressure’ plant between 1954 and 1958 is evident.

Closure and aftermath

Upper Boat power station was decommissioned in 1972. The buildings subsequently demolished in 1976 [17] and the area has been redeveloped with industrial and commercial units. The 132 kV and 275 kV substations are extant (2020). [9]

See also

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References

  1. ↑ "South Wales Electrical Power Distribution Company Act 1900". legislation.gov.uk. Retrieved 15 August 2020.
  2. ↑ "Local Acts of Parliament 1920". legislation.gov.uk. Retrieved 15 August 2020.
  3. ↑ "Local Acts of Parliament 1922". legislation.gov.uk. Retrieved 15 August 2020.
  4. ↑ Electricity Commissioners (1925). Electricity Supply - 1920-1923. London: HMSO. pp. 232–235, 520–525.
  5. 1 2 "Ordnance Survey 6-inch map Glamorgan XXXVI.NE (includes: Eglwysilan; Llantwit Fadre; Pont y Pridd.) Revised: 1947". National Library of Scotland. 1949. Retrieved 15 August 2020.
  6. 1 2 "South Wales electric company upper boat power station (415277)". Coflein. RCAHMW . Retrieved 15 August 2020.
  7. ↑ "Electrical Power Distribution In South Wales". The Times. 11 July 1904. p. 8.
  8. 1 2 3 4 5 Garrett, Frederick C. (1959). Garcke's Manual of Electricity Supply vol. 56. London: Electrical Press Limited. pp. A-103, A-136.
  9. 1 2 Open Infrastructure Map. "132 and 275 kV substations Upper Boat". Open Infrastructure Map. Retrieved 15 August 2020.
  10. ↑ Electricity Commission (1925). Electricity Supply - 1920-23. London: HMSO. pp. 232–235, 520–525.
  11. ↑ "Electricity (Supply) Act 1926". legislation.gov.uk. Retrieved 15 August 2020.
  12. 1 2 Electricity Council (1987). Electricity supply in the United Kingdom: a Chronology. London: Electricity Council. pp. 45, 60, 69, 73. ISBN   085188105X.
  13. ↑ "Electricity Act 1947". legislation.gov.uk. 1947. Retrieved 15 August 2020.
  14. ↑ CEGB Annual Reports 1961, 1962, 1963 London: CEGB
  15. ↑ CEGB (1972). CEGB Statistical Yearbook 1972. London: CEGB. p. 11.
  16. ↑ Electricity Commission (1947). Generation of Electricity in Great Britain year ended 31 December 1946. London: HMSO. p. 13.
  17. ↑ "Rhondda-Cynon-Taf Library Services Upper Boat". Rhondda-Cynon-Taf Library Services. Retrieved 15 August 2020.
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