Woking power station

Woking power station supplied electricity to the Borough of Woking and the surrounding area from 1890 to 1960. The power station was operated by the Woking Electric Supply Company Limited until the nationalisation of the British electricity industry in 1948. It was redeveloped after the First World War to meet the increased demand for electricity.

Woking power station
CountryEngland
LocationWoking
Coordinates51°19′26″N 00°33′01″W
StatusDecommissioned
Construction began1889
Commission date1890
Decommission date1960
Owner(s)Woking Electricity Supply Company Limited
(1890–1895)
Woking Electric Supply Company Limited
(1895–1948)
British Electricity Authority
(1948–1955)
Central Electricity Authority
(1955–1957)
Central Electricity Generating Board
(1958–1960)
Operator(s)As owner
Thermal power station
Primary fuelCoal
Turbine technologySteam turbines
Cooling sourceCooling tower
Power generation
Units operational1 x 2.5 MW, 1 x 2 MW, 2 x 1.25 MW
Make and modelBrush-Ljungstrom
Nameplate capacity7 MW
Annual net output3527 MWh (1946)

History

The Woking Electricity Supply Company Limited obtained a Provisional Order in 1890 under the Electric Lighting Acts  to generate and supply electricity to Borough of Woking. The Order was granted by the Board of Trade and was confirmed by Parliament through the Electric Lighting Orders Confirmation (No. 5) Act 1890 (54 & 55 Vict. c. cxc).[1] The company built a power station in Board School Road, Woking (51°19’26”N, 00°33’01”W)[2] which was commissioned in 1890.[3]

The Woking Electric Supply Company Limited was formed on 5 December 1895 to acquire the Woking Electricity Supply Company.[3] The company undertook a major upgrade of the plant in 1918–28.

The British electricity supply industry was nationalised in 1948 under the provisions of the Electricity Act 1947 (10 & 11 Geo. 6 c. 54).[4] The Woking electricity undertaking was abolished, ownership of Woking power station was vested in the British Electricity Authority, and subsequently the Central Electricity Authority and the Central Electricity Generating Board (CEGB).[5] At the same time the electricity distribution and sales responsibilities of the Woking electricity undertaking were transferred to the South Eastern Electricity Board (SEEBOARD).

Woking power station was closed in 1959–60.[6]

Equipment specification

Plant in 1898

The generating plant in 1898 comprised Corliss Compound Engines and a Belliss and Parsons steam turbine coupled directly and by belts to Mordey and Parsons dynamos. The plant had a generating capacity of 255 kW.[3]

Plant in 1919

In 1919 the generating capacity at Woking power station was 2,100 kW, the maximum load on the feeders was 1,192 kW, and there was 5,950 kW of connections on the circuits.[7]

Plant in 1923

By 1923 the plant comprised boilers delivering 55,000 lb/h (6.93 kg/s) of steam to:[8]

  • 2 × 150 kW reciprocating engines driving alternating current (AC) alternators
  • 2 × 400 kW reciprocating engines AC alternators
  • 2 × 1,000 kW steam turbo-alternator (AC)

These machines had a total generating capacity of 3,100 kW.

Electricity supply to consumers was at 200 V AC.[8]

Plant in 1954

By 1954 the plant comprised:[9]

  • Boilers:
    • 2 × Babcock and Wilcox 25,000 lb/h (3.15 kg/s) chain grate stoker boilers, steam conditions were 175 psi and 680°F (12.1 bar and 360°C),
    • 1 × Babcock and Wilcox 15,000 lb/h (1.9 kg/s) chain grate stoker boiler, steam conditions as above, steam was supplied to:
  • Generators:
    • 1 × 2.5 MW Brush-Ljungstrom 2 kV single phase turbo-alternator
    • 1 × 2.0 MW Brush-Ljungstrom 2 kV single phase turbo-alternator
    • 2 × 1.25 MW Brush-Ljungstrom 2 kV single phase turbo-alternators

The total generating capacity was 7 MW.[9]

Condenser water was cooled in a Premier cooling tower with a capacity of 0.24 million gallons per hour (1,091 m3/hour).[9]

Operations

Operating data 1898

The 1898 generating plant had a capacity of 484 kW and a maximum load was 125 kW .[3]

Operating date 1919

In 1919 the amount of electricity generated was 2,243 MWh, the total sold was 1,847 MWh to 2,317 customers.[7]

Operating data 1921–23

The electricity supply data for the period 1921–23 was:[8]

Woking power station supply data 1921–23
Electricity Use Units Year
1921 1922 1923
Lighting and domestic MWh 1,412 1,469 1,603
Public lighting MWh 0 0 0
Traction MWh 0 0 0
Power MWh 828 659 668
Bulk supply MWh 0 0 0
Total use MWh 2,240 2,128 2,271

The electricity Loads on the system were:

Year 1921 1922 1923
Maximum load kW 1,337 1,526 1,395
Total connections kW 5,929 6,100 7,123
Load factor Per cent 23.6 19.5 22.7

Revenue from the sale of current (in 1923) was £45,507; the surplus of revenue over expenses was £27,283.[8]

Operating data 1931–36

In 1931 Woking power station generated 9,663 MWh and sold a total of 7,912 MWh. Woking Electric Supply Company Limited supplied electricity to Woking, Chertsey, Bisley, Byfleet, Pyrford, Ockham, Pirbight, Send, Ripley, Wisley, Littleton, Shepperton and Laleham.[10]

In 1933 the company sold 9,826 MWh; in 1934 11,512 MWh; and in 1935 13,597 MWh.[11] In 1936 no electricity was generated by Woking, the undertaking purchased its supply which amounted to 18,989 MWh. In that year there was a load of 33,059 kW connected to the system. There were 15,764 customers.[11]

Operating data 1946

In 1946 Woking power station supplied 3,527 MWh of electricity; the maximum output load was 5,443 kW.[12]

Operating data 1954–58

Operating data for the period 1954–58 was:[9]

Woking power station operating data, 1954–58
Year Running hours Max output capacity,  MW Electricity supplied, MWh Thermal efficiency per cent
1954 307 4 888 6.28
1955 166 4 169 2.23
1956 196 2 472 9.86
1957 80 2 59 3.27
1958 73 2 62 5.03

The amount of electricity sold by the Woking Electric Supply Company Limited in MWh was as follows:

Woking Electricity District

Following nationalisation in 1948 Woking power station became part of the Woking electricity supply district, covering 69 square miles (179 km2) with a population of 110,090 in 1958. The number of consumers and electricity sold in the Woking district was:[9]

Year 1956 1957 1958
Number of consumers 33,367 34,822 36,033
Electricity sold MWh 126,164 139,814 152,414

In 1958 the number of units sold to categories of consumers was:[9]

Type of consumer No. of consumers Electricity sold MWh
Domestic 32,444 71,882
Commercial 2,885 16,754
Industrial 517 61,018
Farms 179 1,942
Public lighting 8 818
Total 36,033 152,414

See also

References
  1. "Local Acts 1890". Legislation.gov.uk. Retrieved 10 January 2021.
  2. Ordnance Survey 25-inch, Surrey XVII.5 (Horsell; Pyrford; Woking), revised 1912, published 1914.
  3. Garcke, Emile (1898). Manual of Electrical Undertakings 1898-99 vol. 3. London: P. S. King and Son. p. 345.
  4. "Electricity Act 1947". Legislation.gov.uk. Retrieved 10 January 2021.
  5. Electricity Council (1987). Electricity supply in the United Kingdom: a Chronology. London: Electricity Council. pp. 60–61, 73, 76. ISBN 085188105X.
  6. Woking power station is shown in Garrett (1959), but is not shown in CEGB Annual Report 1961
  7. London County Council (1922). London Statistics 1920-21 Vol. 27. London: London County Council. pp. 288-9 294-5.
  8. Electricity Commissioners (1925). Electricity Supply – 1920–23. London: HMSO. pp. 220–223, 508–13.
  9. Garrett, Frederick (1959). Garcke’s Manual of Electricity Supply vol. 56. London: Electrical Press. pp. A-109 A-138, B-258.
  10. London County Council (1934). London Statistics 1932-3 Vol. 37. London: London County Council. pp. 335, 348–9.
  11. London County Council (1939). London Statistics 1936-8 Vol. 41. London: London County Council. pp. 386–7, 392–3.
  12. Electricity Commissioners (1947). Generation of Electricity in Great Britain year ended 31 December 1946. London: HMSO. p. 15.
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